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CX-U Series Hardware Reference Manual

COPYRIGHTS AND DISCLAIMERSHardware Revision number: CX-U rev 6Published Date: September 2009

This publication contains information proprietary and confidential to Memotec Inc. Any reproduction, disclosure or unauthorized use of this publication is expressly prohibited except as Memotec Inc. may otherwise authorize in writing.

Memotec Inc. reserves the right to make changes without notice in product or component design as warranted by evolution in user needs or progress in engineering or manufacturing technology. Changes which affect the operation of the unit will be documented in the next revision of the manual.

We have made every effort to ensure the accuracy of the information presented in our documentation. However, Memotec assumes no responsibility for the accuracy of the information published. Product documentation is subject to change without notice. Changes, if any, will be incorporated in new editions of these documents. Memotec may make improvements or changes in the products or programs described within the documents at any time without notice. Mention of products or services not manufactured or sold by Memotec is for informational purposes only and constitutes neither an endorsement nor a recommendation for such products or services.

Memotec Inc. is a wholly owned subsidiary of Comtech EF Data Corp., and its parent company Comtech Telecommunications Corp (NASDAQ: CMTL).

CX-U Series, CX-UA Series, and AbisXpress are either registered trademarks or trademarks of Memotec Inc.in Canada, the United States of America, and in other countries.

Belden is a registered trademark of Belden Inc.in the United States of America and in other countries.

Any other trademarks are the property of their respective companies.

Copyright © 2009 Memotec Inc.

Memotec Inc.7755 Henri Bourassa Blvd. WestMontreal, QuebecCanada H4S 1P7Tel.: (514) 738-4781FAX: (514) 738-4436www.memotec.com

http://www.memotec.com

Contents

Chapter 1: Functional and Hardware Overviews . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1. 1 Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.1.1 Compatible Applications of the CX-U Technology . . . . . . . . . 1-3

1. 2 Procedures for Returning Equipment for Repair . . . . . . . . . . . . . . . . . . . 1-4

1.2.1 Obtaining an RA Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41.2.2 RA Procedure and Directives . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 2: Overview of the CX-U1000 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2. 1 CX-U1000 Series Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2. 2 CX-U1000 Series Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.2.1 Front Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2. 3 CX-U1000 Series Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.3.1 Rear Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2. 4 About the DLP and DDLP cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Chapter 3: Unique Properties per CX-U1000 Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.0.1 Front Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23.0.2 CX-U1010 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53.0.3 Internal Clock Synchronization. . . . . . . . . . . . . . . . . . . . . . . . 3-5

3. 1 CX-U1220/CX-U1240/CX-U1280 Unique Specifications . . . . . . . . . . . . . 3-6

3.1.1 CX-U1220/CX-U1240/CX-U1280 Front Panel . . . . . . . . . . . . 3-63.1.2 CX-U1220/CX-U1240/CX-U1280 Rear Panel . . . . . . . . . . . . 3-63.1.3 Internal Clock Synchronization. . . . . . . . . . . . . . . . . . . . . . . . 3-7

Chapter 4: GPS Module Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4. 1 GPS Clock Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.1.1 GPS Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24.1.2 GPS Antenna for CX-U Devices. . . . . . . . . . . . . . . . . . . . . . . 4-34.1.3 Surge Protection Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Chapter 5: Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5. 1 Installation Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.1.1 Unpacking and Inspecting the Units . . . . . . . . . . . . . . . . . . . . 5-25.1.2 Opening and Closing the Chassis . . . . . . . . . . . . . . . . . . . . . 5-2

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5.1.3 Adding a Redundant Backplane to Two Units . . . . . . . . . . . . 5-45.1.4 Removing a Faulty Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5. 2 Adding DLPs or DDLPs to a Motherboard . . . . . . . . . . . . . . . . . . . . . . . .5-6

5.2.1 Locating the DLPs on the CX-U1000 devices (Rev 6) . . . . . . 5-85.2.2 Archives: Locating DLPs on Previous Versions . . . . . . . . . . . 5-9

5. 3 Adding a GPS Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

5. 4 Vertically Mounting CX-U Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14

5.4.1 Vertically Mounting CX-U Units. . . . . . . . . . . . . . . . . . . . . . . 5-14

5. 5 Connecting the Unit to a Power Source . . . . . . . . . . . . . . . . . . . . . . . . .5-16

5.5.1 Wiring the DC Power Connector. . . . . . . . . . . . . . . . . . . . . . 5-16

5. 6 Connecting the CX-U Console to a PC . . . . . . . . . . . . . . . . . . . . . . . . .5-18

Chapter 6: Recording System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

6. 1 Identifying the Hardware Revision of a CX-U Device. . . . . . . . . . . . . . . .6-2

6. 2 Identifying the Software Revision of a CX-U Device . . . . . . . . . . . . . . . .6-3

6.2.1 Using CXAccess via Remote Access . . . . . . . . . . . . . . . . . . . 6-36.2.2 Using CXAccess via the Console Port . . . . . . . . . . . . . . . . . . 6-4

Chapter 7: Obtaining Optional Activation Codes. . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

7. 1 Identifying the Serial Number of a CX-U Device . . . . . . . . . . . . . . . . . . .7-2

7. 2 Entering your Activation Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Appendix: Optional Backplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

The CX-B2L04T & CX-B2L12T Redundant Backplanes . . . . . . . . . . . . A-2

The CX-B1L04T & CX-B1L12T Backplanes . . . . . . . . . . . . . . . . . . . . . A-5

The CX-B2L04R & CX-B2L12R Redundant Backplanes . . . . . . . . . . . A-7

Line Bypass Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11

Protective Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12

Appendix: Warranty and Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Memotec Standard Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

FCC and ACTA Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Industry Canada (IC) Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Conformity Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

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Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glossary-1

List of Tables

Table 1-1: CX-U1000 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Table 2-1: CX-U1000 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Table 2-2: Front Panel LED Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Table 2-3: Front Console and Ethernet LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Table 2-4: Rear Ethernet LEDs (4 ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Table 2-5: Console Port Pinouts (DTE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Table 2-6: CLOCK IN Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Table 2-7: CLOCK OUT Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Table 2-8: Pinouts for RJ-21x and RJ-48c. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Table 2-9: Pinouts for CA /TC-M0-10 RJ-21M to open-end “CHAMP” cable . . . . . 2-12

Table 2-10: RJ-48c Pinouts for T1/E1 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Table 2-11: Rear T1/E1 LEDs (12 ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Table 2-12: Signal Pinouts for EIA-530 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Table 2-13: Rear panel LED status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Table 2-14: Rear Panel LED Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Table 2-15: Types of DLP/DDLP cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Table 3-1: Front Panel LED Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Table 3-2: Front Console and Ethernet LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Table 3-3: Rear Ethernet LEDs (4 ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Table 3-4: Rear T1/E1 LEDs (12 ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Table 4-1: GPS Clock Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Table 4-2: GPS Clock Antenna Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Table 4-3: Surge Protection Device Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Table 5-1: Pinouts for RJ-45-to-DB-9 Connections . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Table A-1 DB-15 Male Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Table A-1 RJ-21 Female Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Table A-1 RJ-21 Female Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9

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List of Figures

Figure 1-1: The CX-U1240 Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Figure 1-2: CX-U Functional Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Figure 2-1: CX-U1240 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Figure 2-2: CX-U1000 Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Figure 2-3: The RJ-21 and RJ-48c Connectors for T1/E1 . . . . . . . . . . . . . . . . . . . . 2-11

Figure 2-4: Male and Female 25-pin RS-530 Connectors . . . . . . . . . . . . . . . . . . . . 2-14

Figure 2-5: Top and Bottom of the DLP/DDLP chips . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Figure 3-1: CX-U1010 unit front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2


Figure 3-3: CX-U1240 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6


Figure 4-1: Schematic Diagram of the GPS Solution . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Figure 4-2: The GPS Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Figure 4-3: The GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Figure 4-4: Surge Protection Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Figure 5-1: Opening the CX-U Series Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Figure 5-2: Attaching the Redundant Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Figure 5-3: Locating the D/DLP connectors and fasteners. . . . . . . . . . . . . . . . . . . . . 5-6

Figure 5-4: CX-U1280 motherboard with a DLP and DDLP card installed . . . . . . . . . 5-7

Figure 5-5: Adding DLP/DDLP chip sets to the CX-U1000 series of motherboards. . 5-8

Figure 5-6: DLP positions on a CX-U1010 device (rev 1, 2, and 3) . . . . . . . . . . . . . . 5-9

Figure 5-7: DLP positions on a CX-U1010 device (rev 4 and 5). . . . . . . . . . . . . . . . . 5-9

Figure 5-8: DLP positions on a CX-1240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Figure 5-9: Adding the Bulkhead Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Figure 5-10: Attaching the SMA Cable to the GPS Module . . . . . . . . . . . . . . . . . . . 5-12

Figure 5-11: Positioning the GPS Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Figure 5-12: Vertically mounted CX-U units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Figure 5-13: Power Entry Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Figure 5-14: Wiring for the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

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Figure 5-15: Cable Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Figure 5-16: Console Port Cable with RJ-45-to-DB-9 Adaptor . . . . . . . . . . . . . . . . . 5-18

Figure 6-1: Locating the Revision number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Figure 6-2: Software Revision numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Figure 6-3: Device dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Figure 6-4: The results of the module command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Figure 7-1: Device dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Figure 7-2: The results of the sysinfo command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Figure E-1 The 12 Port CX-B2L12T Redundant Backplane . . . . . . . . . . . . . . . . . . . .A-2

Figure E-3 The CX-B2L04T Backplane Connectors. . . . . . . . . . . . . . . . . . . . . . . . . .A-3


Figure E-6 DB-15 Alarm Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

Figure E-1 The 12 Port CX-B1L12T Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5



Figure E-1 The 4 Port CX-B2L04R Redundant Backplane. . . . . . . . . . . . . . . . . . . . .A-7

Figure E-2 The CX-B2L04R Backplane Connectors . . . . . . . . . . . . . . . . . . . . . . . . .A-8

Figure E-3 The CX-B2L12R Backplane Connectors . . . . . . . . . . . . . . . . . . . . . . . . .A-9

Figure E-1 Line Bypass Route (12 ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-11

Figure E-2 Line Bypass Route (4 ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-11

1

Functional and Hardware Overviews

This chapter presents functional and hardware overviews of the CX-U Series, which includes the CX-U1010, CX-U1220, CX-U1240, and CX-U1280.

This chapter also explains how to contact Memotec for support and the process to following to repair equipment.

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1.1 Functional OverviewMemotec’s CX-U Series provides solutions for cellular backhaul, DCME solutions for telephony applications, and a wide range of voice, data, and IP services, via T1/E1, Serial (V.35/V.11), and Ethernet network interfaces.

The CX-U1000 series has four models listed in the Table 1-1. Common to these four models are the following:

• five switched Ethernet ports (one in the front, and four at the rear)

• a Serial V.35//EIA-530 8 Mbps uplink

* The frequency of a standard DSP and a DDLP is always 600 Mhz. For a DLP, the frequency can be 600 or 720 Mhz. However, if you add an extra DLP, both DLPs must use the same frequency.

For more information on the DLP and DDLP, see:

• “About the DLP and DDLP cards” on page 2-18

• “Adding DLPs or DDLPs to a Motherboard” on page 5-6

Figure 1-1: The CX-U1240 Unit

Unit Model Stndrd DSP

Possible DSP Resources (upgraded)

DLPs/DDLPs Frequency*

T1/E1 ports (TDM, Abis/Ater, TDMA/CDMA, Voice PCM)

CX-U1010 1 5 2 600 MHz720 MHz (optional) 4

CX-U1220 2 6 2 600 MHz 12

CX-U1240 4 8 2 600 MHz720 MHz (optional) 12

CX-U1280 8 12 2 600 MHz 12

Table 1-1: CX-U1000 Specifications

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NOTE: Ports 1 to 3 and 5 to 10 are restricted for internal applications, but ports 4, 11, and 12 have extra protection for external applications.

The CX-U1000 series of units each have two sockets to hold the DLP and DDLP plugins. You can use these sockets to plug two DLPs, two DDLPs, or a mix of the two. Using the DDLPs, you can expand the unit to 12 ports.

1.1.1 Compatible Applications of the CX-U Technology

The CX-U is an access/switching device that supports a wide variety of applications. Figure 1-2 illustrates some of the applications that are supported by the CX-U.

The functions and capabilities of the CX-U device are controlled primarily by the motherboard and the software residing in its memory.

Figure 1-2: CX-U Functional Applications

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1.2 Procedures for Returning Equipment for RepairIf for any reason you need to return a piece of equipment to Memotec, please use the following procedure. DO NOT attempt to ship the equipment without a valid Return Authorization number.

NOTE: Returns for repair will not be accepted without prior authorization from Memotec. When a return is authorized a Return Authorization number (RA number) is assigned. The RA number must be written on the outside of each returning package.

1.2.1 Obtaining an RA Number

You may obtain an RA number using the following methods:

• send an e-mail to [email protected]. Be sure to include a descrip-tion of the problem you are encountering. An RMA form will be e-mailed to you.

• obtain an RMA form directly from the Support page on our web site (http://www.memotec.com).

1.2.2 RA Procedure and Directives

RA numbers are valid for 30 days after date of issue. Please DO NOT SHIP any equipment before receiving an Return Authorization (RA) number.

No credit will be given for equipment returned without proper authorization. All items inside the unit must be listed in the RMA form.

To avoid custom delays, we ask that you provide your shipping company all the commercial invoices necessary. MEMOTEC WILL NOT BE RESPONSIBLE for any fee encountered for storage from the shipping company or delays caused by missing documents. It is the responsibility of the sender to make sure that all documents are clearly indicated for customs. You may also fax (514-738-4436) the commercial invoices once you ship the equipment, these will be used as a reference only.

Repairs are processed within 20 business days of receiving the equipment.The PO for the repair cost should be faxed to the same number (please indicate your RA # on all documentation and on all the boxes).

NOTE: For all in-warranty repair with no-problem-found (NPF), there will be an administration fee applied. Please contact your sales representative for the current fees.

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mailto:[email protected]://www.memotec.comhttp://www.memotec.com


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2

Overview of the CX-U1000 Units

The following section describes the physical, electrical and environmental specifications for the CX-U1000 units. These units include:

• CX-U1010• CX-U1220• CX-U1240• CX-U1280

For a list of properties and specifications that are unique for each unit model, see “Unique Properties per CX-U1000 Unit” on page 3-1.

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2.1 CX-U1000 Series SpecificationsThe CX-U1000 series of units are rack-mountable devices with support brackets on either side. They are enclosed in a steel case. The CX-U1000 series are available as DC-powered units only.

NOTE: For up-to-date specifications on the CX-U1000 series of products, access the Products page of our website (http://www.memotec.com), select the CX-U Series page, and download the datasheet (in PDF format).

Physical

Dimensions Height: 1.75 in. (4.4 cm)Width: 16.5 in. (41.9 cm)Depth: 9.25 in. (23.45 cm)

Weight 5.5 lbs. (2.5 kg)

Electrical

Ratings -36 to -60 VDC; 0.5A

Fuse Requirements PTC, 1A

Power The CX-U1000 series of units have a dual power feed, but a single power supply

This means that if a single power feed were to become unavailable, the power could continue to flow to the unit via the second power feed.

Environmental

Operating Temperature -10° to 65°C (32° to 149°F)

Storage Temperature -50° to 85°C (-57° to 185° F)

Humidity 0 to 95% (non-condensing)

Cooling Forced air by one or two factory-installed fans.

The fans are heat sensitive and turn on and off automati-cally, depending on the temperature inside the unit.

Note: The CX-U1010 has only one fan.

Table 2-1: CX-U1000 Specifications

2-2 Memotec Inc.

http://www.memotec.comhttp://www.memotec.com


2.2 CX-U1000 Series Front PanelThe front panel, as shown in Figure 2-1, has a series of status indicating LEDs. The front console and Ethernet ports (on the right) also have two LEDs each, integrated into the jack.

The following is an example of how the front panel of a CX-U1000 units is designed:

NOTE: The layout of the front panel can be different from unit to unit. For more information, see “Unique Properties per CX-U1000 Unit” on page 3-1.

2.2.1 Front Panel LEDs

Table 2-2 summarizes the behavior of the LEDs that are visible from the front of the unit. Some of these LEDs have corresponding LEDs at the rear of the unit. Those are described in Section 2.3.

Figure 2-1: CX-U1240 Front View

Label Colour LED State Indication

Power A, B Green On System power is on at a suitable level to ensure proper function.

Off The DC power feed is redundant, so this may indicate the unit is simply unplugged, or:

• there may be a system failure,• one of the redundant power supplies has

failed• the DC plug or wiring has failed• the main input power has failed

Note: If the DC wires are inverted, the unit will still operate. It is NOT recommended to deliberately invert the DC wires.

Table 2-2: Front Panel LED Status

Memotec Inc. 2-3


Console and Ethernet Ports

There are two RJ-45 ports labelled CONSOLE and ETHERNET in the front of the unit. They each have two integrated green LEDs, whose indications are described below in Table 2-3. There is also a second console port and four other Ethernet ports at the rear of

StatusActive

Green On The unit is working properly and identifies the active unit against the redundant units.

In stand-alone mode, this LED is on.

Off The unit is not working properly.

Note: If there are two units in a redundancy setup, the backup unit is fully opera-tional, even if this LED is off.

StatusAlarm

Red On Indicates a red alarm, the unit is not operating in its normal state.

Off There is no alarm.

V.35TX, RX

Green On TX: data is being transmitted.

RX: data is being received.

Off Data is not being transmitted.

Ethernet1,2,3,4

Green On Front LEDs combine link and activity detection. When lit, data on the link is being exchanged. This light is intermittent with the flow of traffic.

Off Data is not being exchanged, or there is no link detected.

WAN Green On End-to-end communication is valid

Red On No signal is being received

Yellow On A RAI or RDI remote alarm has been received.

T1/E11-12

Green On The T1/E1 link is up.

Red On T1/E1 loss of signal (LOS).

Yellow On A RAI or RDI remote alarm has been received. from the port.

Blue On An AIS alarm was detected on the receiving side or it was generated by the CX-U after a loss of signal on the incoming WAN.

None Off No links are configured.



2-4 Memotec Inc.


the unit, these are described further in “Rear Panel Features” on page 2-6.

*These are not labelled on the device, but labelled here for clarity.

Ports Label Colour LED State Indication

ConsoleTX,RX*




EthernetLink*

Green On A steady green light indicates the link is up.

When the light flashes intermittently, there is activity on the port.

Off There is no Ethernet link detected.

EthernetSpeed*

Green On A 100 Mbps connection is detected.

Off A 10 Mbps connection is detected.

Table 2-3: Front Console and Ethernet LEDs

Memotec Inc. 2-5


2.3 CX-U1000 Series Rear PanelCommunication cables and the power cord connect to the unit via its rear panel. The following section describes all the panel’s features, in order as they appear from left to right.

The following is an example of how the rear panel of a CX-U1000 units is designed:

NOTE: The layout of the rear panel can be different from unit to unit. For more infor-mation, see “Unique Properties per CX-U1000 Unit” on page 3-1.

2.3.1 Rear Panel Features

EthernetConnectors

There are four switched 10/100 Mbps Ethernet ports at the back of the unit for WAN connections (there is another in the front of the unit, suitable for unit management). Each port is a female 8-pin RJ-45 connector. They autosense data transmission speeds of 10 or 100 Mbps, and autosense full-duplex or half-duplex capability. Auto-MDIX is supported, however, you can still use straight or crossover Ethernet cables when connecting a CX-U Series device to another device such as a modem or PC.

Figure 2-2: CX-U1000 Rear View

2-6 Memotec Inc.


The Ethernet LED indications are summarized in Table 2-4.

GPS Antenna Connector

This SMA connector is used with the optional GPS solution kit. Please see “GPS Module Solution” on page 4-1 for more information.

Console Port The rear panel has a female RJ-48c connector labeled CONSOLE for the console port (a second identical port is located in the front of the unit). The console port is configured as data terminal equipment (DTE). The default parameters for the console port are:

• 9600 baud

• 8 data bits

• No parity generated or checked

• 1 stop bit

• No Flow Control

Console Port Cabling and Pinouts

To connect a PC terminal to the console port, use a RJ-45-to-RJ-45 rollover cable fitted with an RJ-45-to-DB-9 female DTE adapter (be sure it is labelled “terminal”). Table 2-5 details the console port pinouts.


LINK/ACT Green On A steady green light indicates the link is up.

When the light flashes inter-mittently, the port has activity.


10/100 Green On A 100 Mbps connection is detected.


Table 2-4: Rear Ethernet LEDs (4 ports)

Pin* Signal Input/Output

1 -- -

2 DTR Output (optional)

3 TxD Output

4 GND -

5 GND -

Table 2-5: Console Port Pinouts (DTE)

Memotec Inc. 2-7


*Any pin not referenced is not connected.

For information on console cables, please see “Connecting the CX-U Console to a PC” on page 5-18. Console cables are also available upon request. Please contact your sales representative.

NOTE: Previously acquired Memotec console cables for the CX series of units will NOT work with the CX-U Series devices.

ClockReference Input/Output

There are two 75-Ohm female BNC connectors labeled CLOCK IN for the auxiliary clock reference input, and CLOCK OUT for the clock reference output.

NOTE: When configuring the clock reference, both CLOCK IN and CLOCK OUT must have matching shape formats.

The CX-U units support all popular clocking references (for CLOCK IN). The input is 75 Ohms resistive into the BNC connectors. Table 2-6 summarizes the CLOCK IN settings:

6 RxD Input

7 DSR Input (optional)

8 - -


Table 2-5: Console Port Pinouts (DTE)

ShapeFormat Speed

V in Min.

V in Max. Comments

G.703 E11 (T1 pulse)

1,544 Mbps

-12 dbm 0 dbm • Commonly referred to as T1 or DS1 pulse shape, see G.703 section 5 or T1.403

• Can be framed or un-framed all ones• Normally it is fed by a PRC or a BITS timing

source Stratum 2 or higher for optimum per-formance

Note: If balanced input is required, use the Memotec CBLB0001-002 balanced to BNC adaptor.

Table 2-6: CLOCK IN Settings

2-8 Memotec Inc.


The CX-U units provide all popular clocking references (for CLOCK OUT). The output is 75 Ohms resistive over the BNC connector. The CLOCK OUT has very good accuracy (on par with Stratum 3E) and can be used as a clock reference to feed Radio Base Stations for their long-term frequency stability to meet Inter-cell Handovers.

For more information, please refer to the Memotec product information note entitled Memotec CX-U Synchronization, which is available on the Memotec product CD, or directly from Memotec.Table 2-7 summarizes the CLOCK OUT settings:

G.703 E12 (E1 pulse)

2,048 Mbps

12 dbm 0 dbm • Commonly referred to as E1 pulse shape, see G.703 section 9

• Can be framed or un-framed all ones • Normally is fed by a PRC or a SSU timing

source, refer to G.811 & G.812• Can also be fed by satellite modem clock

extension

G.703 T12 (wave)

2,048 MHz

0.75 V peakvoltage

3.0 V peakvoltage

Commonly referred as 2048 kHz synchroniza-tion interface, see G.703 section 13.

Note: This is referred to as Hz, not pulse shape as in the above two references.

Square wave

8KHz to10 MHz

0.75 V peakvoltage

3.0 V peakvoltage

Any multiple of 8kHz square wave from 8kHz up to 10MHz (CCK). 10MHz is used as the GPS satellite synchronization reference.

Format Speed V out Min.V out Max. Comments

G.703 E11(T1 pulse)

1,544 Mbps 0 dbm • Output T1 or DS1 pulse shape as per G.703 section 5 or T1.403

• Un-framed all ones• Normally is the feed for radio

base station clock• The clock precision is on par

with Stratum 3E performance.

Note: If balanced input is required, use Memotec CBLB0001-002 balanced to BNC adaptor.

Table 2-7: CLOCK OUT Settings

ShapeFormat Speed

V in Min.

V in Max. Comments

Table 2-6: CLOCK IN Settings

Memotec Inc. 2-9


Reset Button Mechanically resets the unit. Any unsaved software configuration changes will be lost if you press this button. This button is recessed to prevent it from being pressed accidentally; you must press it with a thin, pointy object like the tip of a pen or a pin.

T1/E1Connectors

There are two ways to connect to the T1/E1 interface: via the 50-pin RJ-21 connector, or the twelve RJ-48c connectors (one for each T1/E1 port). The RJ-21 and RJ-48c connector use standard pinouts, listed in Table 2-8 and shown in Figure 2-3.

NOTE: Please use #26 AWG grade wire or higher.

G.703 E12 (E1 pulse)

2,048 Mbps 0 dbm • Output E1 pulse shape as per G.703 section 9

• Un-framed all ones• Normally is the feed for radio

base station clock • The clock precision is on par

with Stratum 3E or ITU G.812 type 1 performance.

• Can also be used to feed satel-lite modem clock extension

G.703 T12 (wave)

2,048 MHz 0.75 V peakvoltage

3.0 V peakvoltage

Commonly referred as 2048 kHz synchronization interface G.703 section 13

Note: This is referred to as Hz, not pulse shape as in the above two references.

Square wave

8kHz,

64kHz

128 kHz

256 kHz

512kHz

1024 kHz

2048 kHz

4096 kHz

8192 kHz

10 MHz

1.5 V peakvoltage

3.0 V peakvoltage

CLOCK OUT has the capability to generate these frequencies for special synchronization requirements.

Format Speed V out Min.V out Max. Comments

Table 2-7: CLOCK OUT Settings

2-10 Memotec Inc.


Figure 2-3: The RJ-21 and RJ-48c Connectors for T1/E1

Interface Type

E1Circuit Direction

RJ-21x RingConductor

RJ-21x TipConductor

RJ-48c RingConductor

RJ-48c TipConductor

USER 1 Tx 1 26 4 5

Rx 2 27 1 2

2 Tx 3 28 4 5

Rx 4 29 1 2

3 Tx 5 30 4 5

Rx 6 31 1 2

4 Tx 7 32 4 5

Rx 8 33 1 2

5 Tx 9 34 4 5

Rx 10 35 1 2

6 Tx 11 36 4 5

Rx 12 37 1 2

7 Tx 13 38 4 5

Rx 14 39 1 2

8 Tx 15 40 4 5

Rx 16 41 1 2

Table 2-8: Pinouts for RJ-21x and RJ-48c

Memotec Inc. 2-11


NOTE: The list of the T1/E1 connectors can be different from unit to unit. For more information, see “Unique Properties per CX-U1000 Unit” on page 3-1.

There is also an open-ended RJ-21 cable that may be used. This CA /TC-M0-10 RJ-21M (TELCO 50 pin male) to open-end “CHAMP” cable (10ft/3m) supports up to 12 balanced T1/E1 connections. Table 2-9 shows the color code and the pinouts.

WAN 9 Tx 17 42 4 5

Rx 18 43 1 2

10 Tx 19 44 4 5

Rx 20 45 1 2

11 Tx 21 46 4 5

Rx 22 47 1 2

12 Tx 23 48 4 5

Rx 24 49 1 2

Pin Bare Wire Code Pin Bare Wire Code

1 Blue \ White 26 White \ Blue

2 Orange \ White 27 White \ Orange

3 Green \ White 28 White \ Green

4 Brown \ White 29 White \ Brown

5 Grey \ White 30 White \ Grey

6 Blue \ Red 31 Red \ Blue

7 Orange \ Red 32 Red \ Orange

8 Green \ Red 33 Red \ Green

9 Brown \ Red 34 Red \ Brown

10 Grey \ Red 35 Red \ Grey

Table 2-9: Pinouts for CA /TC-M0-10 RJ-21M to open-end “CHAMP” cable

Interface Type

E1Circuit Direction

RJ-21x RingConductor

RJ-21x TipConductor

RJ-48c RingConductor

RJ-48c TipConductor

Table 2-8: Pinouts for RJ-21x and RJ-48c

2-12 Memotec Inc.


RJ-48c Cable Wiring for T1/E1

The T1/E1 connector follows the RJ-48c standard for the pinouts, as listed in Table 2-10.

11 Blue \ Black 36 Black \ Blue

12 Orange \ Black 37 Black \ Orange

13 Green \ Black 38 Black \ Green

14 Brown \ Black 39 Black \ Brown

15 Grey \ Black 40 Black \ Grey

16 Blue \ Yellow 41 Yellow \ Blue

17 Orange \ Yellow 42 Yellow \ Orange

18 Green \ Yellow 43 Yellow \ Green

19 Brown \ Yellow 44 Yellow \ Brown

20 Grey \ Yellow 45 Yellow \ Grey

21 Blue \ Purple 46 Purple \ Blue

22 Orange \ Purple 47 Purple \ Orange

23 Green \ Purple 48 Purple \ Green

24 Brown \ Purple 49 Purple \ Brown

25 Grey \ Purple 50 Purple \ Grey

Pin Bare Wire Code Pin Bare Wire Code

Table 2-9: Pinouts for CA /TC-M0-10 RJ-21M to open-end “CHAMP” cable


1 Receive ring + Input

2 Receive tip - Input

3 -- --

4 TX ring + Output

5 TX tip - Output

6 -- --

7 -- --

8 -- --

Table 2-10: RJ-48c Pinouts for T1/E1 Interface

Memotec Inc. 2-13


Rear T1/E1 LEDs

The rear T1/E1 LEDs work slightly differently than those at the front of the unit, as described in Table 2-2. The rear LEDs do not shine yellow to indicate a link alarm, instead both the red and green LEDs go on at the same time. These rear T1/E1 LEDs are described in Table 2-11.

NOTE: The layout of the T1/E1 ports can be different from unit to unit. For more information, see “Unique Properties per CX-U1000 Unit” on page 3-1.

Redundancy Connector

The HDB-44 female connector labelled “CONTROL” is the status and control port used for the redundancy backplane. The backplane is discussed further in “Optional Backplanes” on page A-1.

EIA-530 Serial InterfaceConnectors

The EIA-530 serial interface supports the V.35 standard. However, it uses a V.11 driver/receiver for data and timing signals and an RS-530 connector (25 pin) for connection to external devices. The connector is shown in Figure 2-3 and the pinouts are listed in Table 2-12.

NOTE: This port is DTE (Data Terminal Equipment) only. If two or more units are connected back-to-back, a cable must be used to mate the appropriate signals..

T1/E1 Ports Colour LED State Indication



both Green

and Red

On Remote T1/E1 failure (RAI or RDI).

none Off No links are configured.

Table 2-11: Rear T1/E1 LEDs (12 ports)

Figure 2-4: Male and Female 25-pin RS-530 Connectors

2-14 Memotec Inc.


Pin No. Signal Abbr.

CircuitImplementation

Signal DTE

Direction DCE

Paired With

1 Shield DGND 18

2 Transmitted Data TXD RS-485 out Out In 14

3 Received Data RXD RS-485 in In Out 16

4 Request to Send RTS RS-485 out Out In 19

5 Clear to Send CTS RS-485 in In Out 13

6 Data Set Ready DSR RS-485 in In Out 22

7 Signal Ground SGND 21

8 Data Carrier Detect DCD RS-485 in In Out 10

9 Return Receive Sig.Element Timing

RS-485 in In Out 17

10 Return DCD RS-485 in In Out 8

11 Return Transmit Sig.Element Timing

RS-485 out Out In 24

12 Return Transmit Sig.Element Timing

RS-485 in In Out 15

13 Return CTS RS-485 in In Out 5

14 Return TxD RS-485 out Out In 2

15 Transmit SignalElement Timing

RS-485 in In Out 12

16 Return RxD RS-485 in In Out 3

17 Receive SignalElement Timing

RS-485 in In Out 9

18 Local Loopback LL RS-232 out Out In 1

19 Return RTS RS-485 out Out In 4

20 Data Terminal Ready DTR RS-232 out Out In 23

21 Remote Loopback RL RS-232 out Out In 7

22 Return DSR RS-485 in &

RS-232 inIn Out 6

Table 2-12: Signal Pinouts for EIA-530 Port

Memotec Inc. 2-15


SerialInterface Cabling

The serial interface connects to external devices through either of two cables:

• three-meter (10 ft) shielded, twisted pair cable with a male DB-25 (RS-530) con-nector at one end and a male M-34 block connector at the other

• three-meter (10 ft) shielded, twisted pair cable with a male DB-25 (RS-530) con-nector at one end and a female M-34 block connector at the other

NOTE: When interfacing the V.35/EIA-530 serial link to a redundant Comtech modem, it is strongly recommended to use the special CBLH-V35C-10 cable in order to preserve the integrity of the modem’s redundant control signal.

In a redundant setup with a V.35 link to two Comtech modems, a special “Y” cable is needed. This cable links both units’ serial interface ports into a 1+1 (hot standby) setup. With this cable, both units actively ‘listen’ to the incoming traffic. Internal management assures only one unit sends traffic onto the interface (the active unit).

The redundant EIA-530/V.35 “Y” cable adaptor is available for all CX-U units.

Serial InterfaceSpeeds

The EIA-530 serial interface supports asynchronous or synchronous transmission at speeds up to 8,192 Mbps. The EIA-530 port can operate at 375 bps - 8,192 Mbps for external or internal clocking.

EIA-530 Signal Handling

Signaling through the EIA-530 port complies fully with the ITU-T’s (CCITT) V.35 standard. Signaling, however, occurs through a generic DB-25 (RS-530) connector.

TX and RX LEDs

These LEDs operate the same way as the V.35 LEDs in the front of the unit. As extracted from Table 2-2:

23 Return DTR RS-485 out Out In 20

24 Transmit SignalElement Timing

RS-485 out Out In 11

25 Test Mode RS-232 in In Out

Pin No. Signal Abbr.

CircuitImplementation

Signal DTE

Direction DCE

Paired With

Table 2-12: Signal Pinouts for EIA-530 Port

2-16 Memotec Inc.


DC Power Entry

The unit operates with a -48V DC single power supply with a dual entry. The entry labelled A is the main and B is the redundant power entry. Please see “Wiring the DC Power Connector” on page 5-16 for assembly instructions.

NOTE: Please use #16 gauge cable for DC power connections.

Power andStatus LEDs

These LEDs behave the same way as the Power and Status LEDs at the front of the unit. As extracted from Table 2-2:


V.35TX, RX




Table 2-13: Rear panel LED status







Table 2-14: Rear Panel LED Status

Memotec Inc. 2-17


2.4 About the DLP and DDLP cardsIn addition to the hardware pre-installed on the motherboard of your unit, you can also add extra daugthercards which add processing power to your unit. Each DSP on these daughtercards can handle one or more T1/E1 ports, depending on which DSP application is active.

For example, the EdgePlus DSP application can only handle one T1/E1 port, while the AbisXpress DSP application can handle two T1/E1 ports.

NOTE: Other factors can influence the number of ports a DSP resource can support. To determine the number of DLP/DDLP cards you need for your network, please contact your Memotec representative.

There are two types of daughtercards you can add to your CX-U unit:

• A DLP (Digital line processor) card has a single DSP resource that is used to compress traffic.

• The DDLP (Dual Digital line processor) has a dual DSP resources which doubles the processing power. Only the CX-U1000 series of units (revision 6 or later) supports the DDLP cards.

Figure 2-5: Top and Bottom of the DLP/DDLP chips

Top side of a DDLP chip (above)Top side of a DLP chip (below)

Bottom side of a DDLP chip (above)Bottom side of a DLP chip (below)

Connector

Connector

2-18 Memotec Inc.


The CX-U1000 series has two sockets to plug a mix of DLP and DDLP cards, although these cards run more efficiently if their speed matches the soldered DSPs.

To see the speed of all the DSP resources for your CX-U device, type sysinfo on the command line.

These cards can be added in any order. To install the DLP/DDLP cards, see “Adding DLPs or DDLPs to a Motherboard” on page 5-6.

Part # Speed (Mhz)

DLP-00 600

DLP-01 720

DDLP-26 600

Table 2-15: Types of DLP/DDLP cards

Memotec Inc. 2-19


2-20 Memotec Inc.

3

Unique Properties per CX-U1000 Unit

The following section describes the unique specifications for the following units:

• CX-U1010• CX-U1220• CX-U1240• CX-U1280

For more information on the properties and specifications that are common to all the units, see “Overview of the CX-U1000 Units” on page 2-1.

Memotec Inc. 3-1


3.1 CX-U1010 Unique SpecificationsThis section lists the properties and specifications that are unique to the CX-U1010 units.

3.1.1 Front Panel LEDs

Table 3-1 summarizes the behavior of the LEDs that are visible from the front of the unit. Some of these LEDs have corresponding LEDs at the rear of the unit. Those are described in “CX-U1010 Rear Panel” on page 3-5.

Figure 3-1: CX-U1010 unit front panel







StatusActive

Green On The unit is working properly and identifies the active unit against the redundant units.

In stand-alone mode, this LED is on.

Off The unit is not working properly.

Note: If there are two units in a redundancy setup, the backup unit is fully opera-tional, even if this LED is off.


3-2 Memotec Inc.


StatusAlarm

Red On Indicates a red alarm, the unit is not operating in its normal state.

Off There is no alarm.

V.35TX, RX




Ethernet1,2,3,4

Green On Front LEDs combine link and activity detection. When lit, data on the link is being exchanged. This light is intermittent with the flow of traffic.

Off Data is not being exchanged, or there is no link detected.

WAN Green On End-to-end communication is valid

Red On No signal is being received

Yellow On Non-AIS alarm has been received from remote equipment on the incoming WAN.

Blue On An AIS alarm was detected on the receiving side or it was generated by the CX-U after a loss of signal on the incoming WAN.

T1/E11-12



Yellow On Non-AIS alarm has been received from the port.

Blue/Yellow Blink An AIS alarm was detected on the receiving side or it was generated by the CX-U after a loss of signal on the port.

None Off No links are configured.



Memotec Inc. 3-3


Console and Ethernet Ports

There are two RJ-45 ports labelled CONSOLE and ETHERNET in the front of the unit. They each have two integrated green LEDs, whose indications are described below in Table 3-2. There is also a second console port and four other Ethernet ports at the rear of the unit, these are described further in “CX-U1010 Rear Panel” on page 3-5.

*These are not labelled on the device, but labelled here for clarity.


ConsoleTX,RX*




EthernetLink*

Green On A steady green light indicates the link is up.

When the light flashes intermittently, there is activity on the port.


EthernetSpeed*

Green On A 100 Mbps connection is detected.


Table 3-2: Front Console and Ethernet LEDs

3-4 Memotec Inc.


3.1.2 CX-U1010 Rear Panel

Communication cables and the power cord connect to the CX-U1010 via the rear panel of the unit. The following section describes all the panel’s features, in order as they appear from left to right.

Rear T1/E1 LEDs

The rear T1/E1 LEDs work slightly differently than those at the front of the unit, as described in Table 3-1. The rear LEDs do not shine yellow to indicate a link alarm, instead both the red and green LEDs go on at the same time (see Table 3-3).

3.1.3 Internal Clock Synchronization

The CX-U1010 has an internal clock that features a high precision holdover capability that provides BTS with accurate timing in case there is a synchronization reference loss. Optionally, you can also use the GPS Module to establish a global timestamp.



LINK/ACT Green On A steady green light indicates the link is up.

When the light flashes inter-mittently, the port has activity.


10/100 Green On A 100 Mbps connection is detected.


Table 3-3: Rear Ethernet LEDs (4 ports)

Memotec Inc. 3-5


3.2 CX-U1220/CX-U1240/CX-U1280 Unique SpecificationsThe following sections contain the properties and specifications that are unique to the CX-U1220, CX-U1240, and CX-U1280 units.

Whenever possible, only the specific aspect has been listed, but in some cases, more information has been included to provide context. In these cases, a note has been added to flag what is unique to the CX-U1220/CX-U1240/CX-U1280 unit.

3.2.1 CX-U1220/CX-U1240/CX-U1280 Front Panel

The front panel, as shown in Figure 3-3, has a series of status indicating LEDs. The front console and Ethernet ports (on the right) also have two LEDs each, integrated into the jack.

The front panel of the CX-U1220/CX-U1240/CX-U1280 features 12 T1/E1 LEDs. For more information about their corresponding jacks, see “Rear T1/E1 LEDs” on page 3-7.

3.2.2 CX-U1220/CX-U1240/CX-U1280 Rear Panel

Communication cables and the power cord connect to the CX-U1220/CX-U1240/CX-U1280 via the rear panel of the unit. The following section describes all the panel’s features, in order as they appear from left to right.

Figure 3-3: CX-U1240 Front View


3-6 Memotec Inc.


Rear T1/E1 LEDs

The rear T1/E1 LEDs work slightly differently than those at the front of the unit, as described in Table 3-1. The rear LEDs do not shine yellow to indicate a link alarm; both red and green LEDs go on at the same time. These LEDs are described in Table 3-1.

3.2.3 Internal Clock Synchronization

It is recommended that you use a third-party equipment (through one of the E1 ports) to determine the internal clocking for the CX-U1220/CX-U1240/CX-U1280 units.

Optionally, you can also use the GPS Module to establish a global clock synchronization (see “GPS Module Solution” on page 4-1).

T1/E1 Ports Colour LED State Indication



both Green

and Red

On Remote T1/E1 fail-ure (RAI or RDI).

both Green

and Red

Blink An AIS alarm was detected on the receiving side or it was generated by the CX-U after a loss of signal on the port.

none Off No links are config-ured.

Table 3-4: Rear T1/E1 LEDs (12 ports)

Memotec Inc. 3-7


3-8 Memotec Inc.

4

GPS Module Solution

This chapter describes the GPS solution with its own built-in clocking offered by the CX-U Series offer a GPS solution with its own built-in clocking.

The GPS solution is optional and can be purchased separately.

Memotec Inc. 4-1


4.1 GPS Clock SolutionThe CX-U GPS clock solution (GPS-CLK-2) provides remote locations with an accurate timing source when the clock reference cannot be economically carried. The GPS solution is composed of three main components: the GPS clock module, the GPS antenna, and the surge (lightning) protection device, which are described in the following sections. Figure 4-1 shows these main components, as well as cables, adaptors and connectors required to setup the entire GPS solution.

4.1.1 GPS Clock Module

This small module, shown in Figure 4-2, mounts directly onto the CX-U motherboard. It is specifically designed for use in remote synchronization and timing applications. The reference synchronization is highly accurate and can achieve full PRC MTIE performance. It has a self-survey mode of operation that allows the module to provide accurate timing even with only one satellite being tracked. It provides reference timing to all T1/E1, serial links (V.35/EIA-530) and external equipment using the SYNC Output. Table 4-1 summarizes its specifications. For instructions on installing the module, please see “Adding a GPS Module” on page 5-11.

Figure 4-1: Schematic Diagram of the GPS Solution

ConnectorTNC Male

ConnectorTNC Female

Antenna Gain 33dB

Cable lenght 100Ft Loss 13.5dB

Adapter TNC fe-male to SMA male

CX-U unit

Lightning Protection Loss 0.1dB

Adapter SMA female to SMA female

Figure 4-2: The GPS Clock Module

4-2 Memotec Inc.

GPS Module Solution

4.1.2 GPS Antenna for CX-U Devices

The GPS antenna, shown in Figure 4-3, is a high-performance active antenna suited for applications requiring low noise and excellent gain. The product functions to specifications over the entire operational voltage and temperature range at a minimal current draw. The product includes high frequency selectivity to avoid interference with other nearby transmitters. It is mounted into the CX-U device, and does not require extra rackmount space. Table 4-2 summarizes some of the antenna’s specifications.

Specification Type Definition/Value

Dimensions 60mm (D) x 40mm (W) x 10mm (H)

Operating Temperature -10° to 65°C (32° to 149°F)

Sensitivity (Acquisition & Tracking) -185dBW

Acquisition Time Stand Alone (Outdoor) Cold:


4.1.3 Surge Protection Device

The compact 20KVA protection device, shown in Figure 4-4, protects against power surges caused by lightning. Its specifications are listed in Table 4-3.

Cable The cable used is a Belden 9258 (RG-8/X type): Outside diameter 0.242 inch, 13.5dB loss per 100 feet at 1GHz.


Operating Temperature -40° to 85°C (-40° to 185°F)

Frequency Range 1570 - 1580 MHz

Gain Element: 3 dBic

LNA: 33 dB

Selectivity -24 dB (+/- 50MHz)

DC operational Input Voltage 3 to16 VDC

Table 4-2: GPS Clock Antenna Specifications

Figure 4-4: Surge Protection Device


Insertion Loss 0.1 dB

Protection & Surge Side Connector TNC Female

Frequency 800 - 2500 MHz

Table 4-3: Surge Protection Device Specifications

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5

Installation and Configuration

This section provides step-by-step procedures to install and configure the hardware components of the CX-U. These procedures prepare the CX-U for further configuration through its resident software.

It is very important to GROUND yourself in order to protect the device from damage due to Electrostatic Discharge (ESD).

WARNING: Read this chapter carefully before performing work on the CX-U.

WARNING: All CX-U1000 units must be installed in Restricted Access Locations (RAL).

WARNING: These procedures must be performed only by qualified service personnel.

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5.1 Installation PreparationsThe CX-U1010 and CX-U1240 fit in a standard rack, as well as the CX-U1280 and the CX-U1220. The mounting brackets and screws are shipped with the units.

5.1.1 Unpacking and Inspecting the Units

When you receive your shipment, you should confirm its contents.

To unpack and inspect the units:

1. Examine the shipping boxes and note if there is any damage.

2. Open the shipping boxes and match their contents with the packing slip. If necessary, make a list of any discrepancies.

3. Examine the exterior of the chassis and cover for cracks, scratches or other signs of damage. You should fully describe the type, amount and location of damage.

4. Store the shipping boxes and protective foam for future use.

5. Inform your sales representative of shipping discrepancies or damage.

5.1.2 Opening and Closing the Chassis

Installing additional DLPs or DDLPs requires that you first remove the CX-U1000’s cover, then replace it when the work is done.

To open and close the chassis:

1. Disconnect all network connections.

2. Disconnect the power cord.

3. Ground yourself to protect the unit from electrostatic discharge (ESD).

4. Position the unit so it faces you. Remove the five Phillips-head screws located on the top of the chassis, see Figure 5-1.

5. Remove the eight Phillips-head screws located on the bottom of the chassis.

6. Slide the base of the unit out by the back. Be careful no to damage the LEDs at the front of the unit.

7. When you have completed work inside the chassis, slide the base of the unit back by the rear of the unit. Be careful not to damage the LEDs at the front of the unit, use caution when fitting them back into their openings.

8. Replace the eight bottom retaining screws, then the five top screws.

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Figure 5-1: Opening the CX-U Series Unit

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5.1.3 Adding a Redundant Backplane to Two Units

Adding a Redundant Backplane requires that you have two CX-U units, stacked one atop the other.

1. Remove the Redundant Backplane from its packaging (if you have not already done so).

2. Carefully line up all connectors located at the rear of the units, and push the backplane into place.

3. Fasten the ten retaining screws, to ensure all interface connectors have solid contact with the backplane.

NOTE: If you also have the protective plates, you need to add them after the back-planes. For more information, see “Protective Plates” on page A-12.

Figure 5-2: Attaching the Redundant Backplane

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5.1.4 Removing a Faulty Unit

This procedure assumes you have followed the instructions in “Adding a Redundant Backplane to Two Units” on page 5-4 and one of the two units has failed. In a typical setup, the top unit handles the traffic (master or main CX-U), except when a failure is detected on it. The bottom unit is the backup or slave CX-U.

For this procedure, call Unit “A” the failed unit, and Unit “B” the redundant backup that takes over.

1. It is mandatory that Unit A has been powered off when connecting and disconnecting from the backplane. This ensures that any traffic being carried in Unit A will automatically shift to Unit B.

2. Remove the five retaining screws from the Unit A, and put them aside for later use.

3. Remove the front rackmount screws, then carefully separate the backplane from Unit A.

Removing and installing the top unit can be performed by one person. However, removing and installing the bottom unit requires two people. When the front rackmount screws have been removed from the bottom unit, it is no longer supported, a second person is needed to hold the bottom unit during the procedure.

4. Replace Unit A with another unit.

5. Replace the five retaining screws.

You may consult the Status Active LEDs (shown in Figure 2-2 in Chapter 2) to help determine which unit is carrying traffic.

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5.2 Adding DLPs or DDLPs to a MotherboardFollow these instructions for adding DLPs or DDLPs to a motherboard. For more information about DLPs and DDLPs, see “About the DLP and DDLP cards” on page 2-18.

1. Follow the instructions outlined in “Opening and Closing the Chassis” on page 5-2 for opening the chassis.

2. Remove the DLP/DDLP from its packaging (if you have not already done so).

3. Make sure the front of the unit is facing you, and locate “DLP#1” silk-screened on the motherboard.

To find the DLP/DDLP locations on your motherboard based on your device, see the following sections:

• “Locating the DLPs on the CX-U1000 devices (Rev 6)” on page 5-8

• “Archives: Locating DLPs on Previous Versions” on page 5-9

4. Gently pull the tops of the two black retainer clips back and slide the DLP/DDLP underneath. Line up the connector on the bottom of the DLP/DDLP to the connector on the motherboard. This should also line up the hole on the DLP/DDLP with the metal post fitted on the motherboard.

Figure 5-3: Locating the D/DLP connectors and fasteners

D/DLP connectors

Screw the chips into place using these fasteners

Rear

Front

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5. Push the DLP/DDLP into place gently, but firmly. Using a Phillips screwdriver, secure the card into place by fastening it with the screw into the metal post.

6. If you are adding a second DLP/DDLP, place it in the “DLP#2” position, and repeat steps 2-6.

NOTE: For the CX-U 1000 series, you can only add two additional DLPs/DDLPs.

7. Follow the instructions outlined in “Opening and Closing the Chassis” on page 5-2 for closing the chassis.

Figure 5-4: CX-U1280 motherboard with a DLP and DDLP card installed

Notice how the DLP and DDLP cards sit atop the motherboard, held in place by the fastening screws

Pre-installed DSP chips

Rear

Front

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5.2.1 Locating the DLPs on the CX-U1000 devices (Rev 6)

Figure 5-5: Adding DLP/DDLP chip sets to the CX-U1000 series of motherboards

The DLP/DDLP chip sets sit on top of the motherboard, fitting in the connector and secured with screws in the fasteners.Connector Fastener

Depending on the model, you can have up to eight DSP chips pre-installed on the motherboard

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5.2.2 Archives: Locating DLPs on Previous Versions

In this section, you can see where the DLP chips were found in previous configurations of the CX-U boards. This section is for legacy purposes only.

CX-U1010 device, rev 1, 2, and 3

CX-U1010 device, rev 4 and 5

Figure 5-6: DLP positions on a CX-U1010 device (rev 1, 2, and 3)

Rear

Front

Figure 5-7: DLP positions on a CX-U1010 device (rev 4 and 5)

Rear

Front

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Locating the DLPs on a CX-U1240 device (Rev 1 to 5)

Figure 5-8: DLP positions on a CX-1240

Rear

Front

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5.3 Adding a GPS ModuleFollow these instructions for adding a GPS module in a CX-U 1000 series unit.

1. Follow the instructions outlined in “Opening and Closing the Chassis” on page 5-2 for opening the chassis.

2. Remove the GPS module from its packaging (if you have not already done so). The packaging should contain:

• the GPS module (receiver)

• an SMA cable

• an SMA/SMA bulkhead adapter

• two hex standoffs

• two screws

3. Remove the protective cover from the opening labelled “GPS” at the rear of the unit. You may use a flathead screwdriver to help pop the cover off.

4. Mount the bulkhead adapter to the GPS opening, as shown in Figure 5-9.

Figure 5-9: Adding the Bulkhead Adapter

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5. Secure the cable to the underside of the GPS module by snapping it into place. See Figure 5-10.

Figure 5-10: Attaching the SMA Cable to the GPS Module

Top side

Underside

Cable fastens to the underside of the GPS module

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6. Locate the area on the motherboard where the GPS module will be placed, as shown in Figure 5-11. Using a Phillips screwdriver, remove the two retaining screws on the motherboard.

7. Using a Phillips screwdriver, fasten the two standoff screws into place.

8. Attach the other end of the cable to the bulkhead adapter which has been fastened to the chassis.

9. Follow the instructions outlined in “Opening and Closing the Chassis” on page 5-2 for closing the chassis.

Figure 5-11: Positioning the GPS Module

Remove retaining screws

Remove protective cover and add bulkhead adapter

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5.4 Vertically Mounting CX-U UnitsIn certain cases, it is recommended that you mount the CX-U units vertically. For more details, please consult the Product Information Note entitled Thermal Management When Installing the CX-U1240 In The Hub which is available on the Memotec product CD, or directly from Memotec.

5.4.1 Vertically Mounting CX-U Units

Please follow these instructions for vertically mounting CX-U units. This procedure assumes that you have followed all necessary procedures outlined above for your application, such as in “Adding DLPs or DDLPs to a Motherboard” on page 5-6 (for adding DLPs) or “Adding a Redundant Backplane to Two Units” on page 5-4 (for adding redundant backplanes), as they apply to you, and are ready to mount the units onto a rack.

This procedure also assumes that you have ordered and received a fuse panel (CB-PWXHD-3), and the CX-U vertical mounting hardware (CB-UVMH-10, consisting of a pair of rails to hold up to ten CX-U units vertically). You will also need a heat deflector.

NOTE: Vertical mounting of CX-U units are recommended when operating above an ambient temperature of 25°C. The harsh conditions or the cabling on each side of the units can limit the air flow within the units.

The NEBS recommended operation temperature is 5°C to 40°C.

To vertically mount a CX-U unit, follow these steps:

1. Install the fuse panel by fastening the four Phillips screws into place.

2. Below the fuse panel, install the CX-U vertical mounting rails onto your standard 40/44 U rack by fastening the four Phillips screws into place.

3. Place the CX-U units, one at a time (or, in a redundant setup, two at a time) by carefully turning them vertically, making sure the Memotec logo is on the bottom.

4. Fasten the four retaining screws to the vertical mounting rails.

5. Repeat until all units are installed (10 units maximum per row).

6. If you are installing more than ten units, add the heat deflector below the first row of ten CX-U units. Tighten all retaining screws to the rack.

7. Repeat steps 1-6 for the next ten units (if necessary).

8. Repeat, if necessary, for the last ten units.

Up to three rows of ten CX-U units can be mounted onto a standard 40/44 U rack. Each row should be separated by a heat deflector, ensuring all units receive fresh air from the bottom. See Figure 5-12 to see an actual setup.

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Figure 5-12: Vertically mounted CX-U units

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5.5 Connecting the Unit to a Power SourceThe DC power connector is comprised of a three-position screw connection plugcomponent enclosed by cable housing. An assembled cable is shown in Figure 5-13(housing cover is removed for illustration purposes).

WARNING: The CX-U unit requires that the building’s electrical installation has a 10-amp maximum overcurrent breaker protection.

WARNING: The power feeds must be disconnected to remove all power from the unit.

5.5.1 Wiring the DC Power Connector

The DC power connector should be made with #16 gauge cable. As illustrated in Figure 5-14, the three wires must follow this sequence (from left to right): -48V, return, ground. Please follow this procedure for wiring the DC power connector.

Figure 5-13: Power Entry Connector

Figure 5-14: Wiring for the DC Connector

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1. Place the -48V wire into the first position on the left. Fasten the retaining screw (just above the opening) to secure the wire into place.

2. Connect the return wire to the middle position. Fasten the retaining screw to secure the wire into place.

3. Connect the ground wire to the last position (on the right). Fasten the retaining screw to secure the wire into place.

NOTE: Be sure to connect the RTN to GND on the user side.

4. Place the plug component into the bottom cover of the cable housing. See Figure 5-15.

5. Pass the tip of the tie wrap down through one of the openings at the bottom cover of the housing. Run it underneath, then pass the tie wrap up through the second opening. Fasten the tie wrap to itself and snugly over the wire, securing it into place. See Figure 5-13 for what the end result should look like.

6. Close the housing by lining up the tabs on the top cover with the bottom cover. Gently push the two halves together until they click into place.

Figure 5-15: Cable Housing

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5.6 Connecting the CX-U Console to a PCConsole cables (CBLH-CONS) can be ordered separately. Please contact your sales representative.

WARNING: Memotec console cables designed to work with CX equipment will NOT work with CX-U devices.

RJ-45 to DB-9 Console Cable

The console cable has an RJ-45 plug on one end and a DB-9 adapter on the other, as shown in Figure 5-16.

The pinouts for the console cable are shown in Table 5-1:

Figure 5-16: Console Port Cable with RJ-45-to-DB-9 Adaptor

Console Port (DTE) Signal RJ-45 Pins

Console DeviceSignal DB-9 Pins

TxD 3 RXD 2

GND 5 GND 5

RxD 6 TXD 3

Table 5-1: Pinouts for RJ-45-to-DB-9 Connections

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6

Recording System Configuration

This chapter describes how to configure the system information for your hardware and software accurately.

This process ensures that Memotec can respond quickly and effectively to service requests.

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6.1 Identifying the Hardware Revision of a CX-U DeviceThe procedure for identifying hardware revision numbers is the same for all CX-U devices:

1. Open the chassis by following the steps detailed in 5.1.2“Opening and Closing the Chassis” on page 5-2.

2. The Memotec hardware revision number is silk-screened on the motherboard. Take note of the number and follow the same procedure to close the chassis.

Figure 6-1: Locating the Revision number

6-2 Memotec Inc.

Recording System Configuration

6.2 Identifying the Software Revision of a CX-U DeviceYou can use CXAccess to find the software revision of the CX-U1010 and CX-U1240. A breakdown of the software revision format follows:

6.2.1 Using CXAccess via Remote Access1. Launch CXAccess.

2. Click the Add Device icon to add a device. The following screen will appear:

3. Enter the device’s configuration information click OK:

• Device IP Address: the IP address for the device.

• Description: the name of the unit (its model number or other identifying name).

• Device Password: the password will already be filled in (default password is “supervisor”).

• Connection Type: there are two possible connection types:

- Telnet: a Transmission Control Protocol (TCP) connection used to transmit data with interspersed TELNET control information.

Figure 6-2: Software Revision numbers

Figure 6-3: Device dialog box

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- RTTY: a telecommunications system consisting of two or more teleprinters using radio as the transmission medium.

• Port: the UDP port for Telenet (default 23)

The CXAccess window appears.

4. To connect to the unit, double-click it to connect to it or select it and click Connect .

5. Type module at the command line prompt, then press Enter. This will yield the software revision information (as shown in the figure below).

6.2.2 Using CXAccess via the Console Port1. Launch CXAccess.

2. Expand My Computer on the left portion of the screen. This will show all the COM ports.

3. Select the COM port that is connected to the Console port of the unit and double-click it to connect to it or click Connect .

4. You will be prompted for a password. Type supervisor then press Enter (the password will not appear on the screen as you type).

5. Type module at the command line prompt and press Enter. The software revision information appears in the window.

Figure 6-4: The results of the module command

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7

Obtaining Optional Activation Codes

This chapter will instruct you on how to retrieve serial numbers and other mandatory product information required from you in order to be eligible to receive activation codes.

Activation codes are required in order to access certain additional features with your CX-U Series equipment. Please contact your sales representative for instructions on how to obtain the codes.

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7.1 Identifying the Serial Number of a CX-U DeviceThere are two serial numbers assigned to each unit: one is outside, the other is inside the chassis. Either of these serial numbers can be used to obtain activation codes.

• The Outside Serial Number appears on a sticker at the rear of the unit.

• The Inside Serial Number can be obtained by using the ‘sysinfo’ command, as outlined in Method 1 and Method 2.

Method 1: Identifying the Inside Serial Number Using CXAccess Remotely1. Launch CXAccess.

2. Click the Add Device icon to add a device. The following screen appears:

3. Enter the device’s IP address in the first box. Then enter the name of the unit in the Description box. The password will already be filled in (default password: supervisor). Click OK.

4. Double-click it to connect to it or select it and click the Connect button.

Figure 7-1: Device dialog box

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Obtaining Optional Activation Codes

5. Type sysinfo at the command line prompt, then press Enter. This will yield the serial number (SNO) and other system information (as shown in the figure below).

Method 2: Identifying the Inside Serial Number Using CXAccess via the Console Port

1. Launch CXAccess.

2. Expand My Computer on the left portion of the screen. This will show all the COM ports.

3. Double-click it to connect to it or select the COM port and click the Connect button

4. You will be prompted for a password. Type supervisor then press Enter (the password does not appear on the screen as you type).

5. Type sysinfo at the command line prompt, then press Enter. This will yield the serial number, and other system information.

Figure 7-2: The results of the sysinfo command

Serial Number

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7.2 Entering your Activation CodeOnce you have received your activation code, you must enter it with CXAccess. You may have more than one code to enter, depending on the options you have purchased. Your activation code will have the following format:

Method 1: Entering the Activation Code1. Follow the steps outlined in Method 1 or Method 2 for using the ‘sysinfo’ command.

2. At the command prompt, type “license” leave one space, then type your activation code, and press Enter. If you have more than one activation code, enter one at a time.

3. Reset the unit in order to activate the new features.

• To save the current configuration and reboot the unit, type:“sysmgt restart=1”.

• To reboot only and not save the current configuration. type:“sysmgt restart=3”.The unit will reboot, and the new features will be activated.

NOTE: Beginning with firmware 2.0 and up, you may use the “license sync” com-mand to dynamically apply the new license, without having to perform a “sysmgt restart”. This new command will cause all ports to go down and up.

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A

Appendix A: Optional Backplanes

The CX-U Series offer additional functionality, like redundancy and line bypass support, via optional backplanes. Characteristics of the different types of backplanes available are discussed in this appendix.

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A.1 The CX-B2L04T & CX-B2L12T Redundant BackplanesThese backplanes implement redundancy support for both 4-port (the CX-B2L04T) and 12-port (the CX-B2L12T) applications, with the added feature of having coaxial connectors (BT-43) for E1 applications. The 12-port version (CX-B2L12T) is illustrated in Figure E-1.

These backplanes convert the impedance type from 120 to 75 Ohm for connections between the RJ-21 connector to the BT-43 (or SMZ) coaxial connectors.

• For instructions on adding the redundancy backplane, please see “Adding a Redundant Backplane to Two Units” on page 5-4.

• For instructions on how to replace a unit, please see “Removing a Faulty Unit” on page 5-5.

• If you also have the protective plates, you need to add them after the backplanes. For more information, see “Protective Plates” on page A-12.

NOTE: The backplane is also compatible with CX-U1000 series of units.

Figure E-1 The 12 Port CX-B2L12T Redundant Backplane

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Optional Backplanes

A.1.2 CX-B2L04T Backplane Connectors

The CX-B2L04T redundancy backplane has 13 connectors, as illustrated in Figure E-3:

• two HDB44 (male) connectors that carry redundancy control signals between the CX-U units and the backplane

• two RJ-21 (male) connectors that carry E1 signals to each CX-U unit

• eight BT-3 coaxial connectors for E1 interfaces (4 RX, 4 TX)

• one DB-15 (male) for the alarm signals (pinouts are listed in Table A-1)


The CX-B2L12T redundancy backplane has 29 connectors, as illustrated in Figure E-5:



• 24 BT-3 coaxial connectors for E1 interfaces (12 RX, 12 TX)


Figure E-3 The CX-B2L04T Backplane Connectors


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Alarm The redundancy backplane has a DB-15 male connector that provides dry alarm contacts. The connector is shown in Figure E-6, and Table A-1 lists the DB-15 male connector pinouts.

Figure E-6 DB-15 Alarm Contacts

Pin # Pin name Pin function (no alarm)

10

3

11

Au-Com

Au-NO

Au-NC

Audio common signal

Audio normally open (alarm = close)

Audio normally closed (alarm = open)

4

12

5

Mn-Com

Mn -NO

Mn -NC

Minor common signal

Minor normally open (alarm = close)

Minor normally closed (alarm = open)

13

6

14

Mj-Com

Mj -NO

Mj -NC

Major common signal

Major normally open (alarm = close)

Major normally closed (alarm = open)

7

15

8

Mi-Com

Mi -NO

Mi -NC

Critical common signal

Critical normally open (relay is energized)

(Alarm = relay de-energized & contact close)

Critical normally closed (relay is energized)

(Alarm = relay de-energized & contact open)

Table A-1 DB-15 Male Connector Pinouts

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Optional Backplanes

A.2 The CX-B1L04T & CX-B1L12T BackplanesThe CX-B1L Series backplanes are also available in 4-port (CX-B1L04T) or 12-port (CX-B1L12T) versions. The 12-port version is shown in Figure E-1.

These backplanes convert the impedance type from 120 to 75 Ohm for connections between the RJ-21 connector to the BT-43 (or SMZ) coaxial connectors.


The CX-B1L04T backplane has ten connectors, as illustrated in Figure E-3:

• one HDB44 (male) connector that carries signals from the unit to the backplane

• one RJ-21 (male) connector that carries E1 signals to the CX-U unit

• eight SMZ coaxial connectors for E1 interfaces (4 RX, 4 TX)

Figure E-1 The 12 Port CX-B1L12T Backplane


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The CX-B1L12T backplane has 26 connectors, as illustrated in Figure E-5:

• one HDB44 (male) connector that carries signals from the unit to the backplane

• one RJ-21 (male) connector that carries E1 signals to the CX-U unit

• 24 SMZ coaxial connectors for E1 interfaces (12 RX, 12 TX)


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A.3 The CX-B2L04R & CX-B2L12R Redundant Backplanes

These backplanes implement redundancy support for both 4-port (the CX-B2L04R) and 12-port (the CX-B2L12R) applications. The CX-B2L04R has the added feature of having four RJ-48c connectors mounted on board, as shown in Figure E-1.

A.3.2 CX-B2L04R Backplane Connectors

The CX-B2L04R redundancy backplane has ten connectors, as illustrated in Figure E-3:



• one RJ-21 (female) connector for E1 signals (pinouts are listed in Table A-1)

• four 4 RJ-48c (female) connectors for E1 signals


Figure E-1 The 4 Port CX-B2L04R Redundant Backplane


RJ-21 Connec-tor Pinouts

Table A-1 lists the RJ-21 female connector pinouts.

A.3.4 CX-B2L12R Backplane Connectors

The CX-B2L12R redundancy backplane has six connectors, as illustrated in Figure E-5:



• one RJ-21 (female) connector for E1 signals (pinouts are listed in Table A-1)

Figure E-3 The CX-B2L04R Backplane Connectors

Pin # Signal Pin # Signal

1 TX_RING1 26 TX_TIP1

2 RX_RING1 27 RX_TIP1







Table A-1 RJ-21 Female Connector Pinouts

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Optional Backplanes


RJ-21 Connec-tor Pinouts

Table A-1 lists the RJ-21 female connector pinouts.

Figure E-5 The CX-B2L12R Backplane Connectors

Pin # Signal Pin # Signal

















Table A-1 RJ-21 Female Connector Pinouts

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