ebb mst30 & mst155m series

MST30 & MST155M Series of

Multi Service Transmission Equipment

User Manual

Beijing Easy Broadband Technology Co., Ltd

Code: V1.1

Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate

maintenance by Buyer, Buyer-supplied firmware or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.

General Safety Precautions Transportation, Installation and Operation Avoid excessive vibration and shocks. Avoid contact with water, dust, and dirt. Avoid excessive direct sunlight. Ensure sufficient cooling. Prevent loose items from falling into the device. Main Powers Disconnect the power cord before opening the device. Use exclusively the supplied power supply the approved power cord. The power plug must be plugged into a properly grounded receptacle. An improperly wired

receptacle could place hazardous voltage on accessible metal parts of the device. The mains supply must match the power specification of the device. Replace blown fuses exclusively with fuses of the same ratings. Do not work on the equipment during periods of lightning activity.

Technical Support Before contacting with your support representative, please prepare to provide the complete

serial number of the affected unit (refer to the according unit label).

Version Number DATE Ver Describe 2006-8-1 V1.1 User Manual

1

INSTRUCTION FOR SAFTY USE MST30 & MST155M SERIES OF OPTICAL MODEM WITHIN THE SCOPE OF DESIGN

AND USE ARE CHARACTERIZED BY WELL-RELIABLE FUNCTION, HOWEVER, WHICH

SHOULD BE AVOIDED DAMAGING AND DESTORYING OPTICAL MODEM THROUGH

HUMAN ACTIVITY.

TO READ THROUGH THE MANUAL CAREFULLY AND PREVERSE THE MANUAL WELL

TO GIVE A GUIDE AND HELP IN THE FUTURE;

TO PREVENT THE EQUIPMENT FROM CLOSE TO WATER OR WET GND;

TO BAN FROM LAYING ANY THINGS ON POWER OR CABLE OR MAKING THE CABLE

TYING OR COVERING ,AND THEN LAY DOWN THE PLACE BEING NOT VULNERABLE TO

TOUCH;

POWER PLUG AND OTHER EQUIPMENT JOINT PARTS OUGHT TO CONNECT STABLY

EACH OTHER AND KEEP REGULAR EXAMINATION.

TO BE SURE TO TAKE CAREFULLY TO CONNECT THE LINES UNDER THE MARK OF

CONNECTING POLE WHEN THE POWER LINE IS LINKED, THE USING POWER MUST BE

COMPLY WITH THE BELOW PRINCIPLES:

1. DIRECT CURRENT -48V TYPE: -36 --- -72V

2. ALTERNATING CURRENT 220V TYPE: 220V±20%,50 HZ

TO KEEP PAYING ATTENTION TO CLEARITY EQUIPMENT AND MAY USE

SOFT-AND-COTTON CLOTH TO BRUSH AT NECESSARY TIME;

In these cases, please turn off the power immediately and timely keep in touch with our

company:

Water invades equipment.

Equipment with damage or the damage of shell;

Equipment with working failure function or the quality for show with complete change;

Equipment to come out scent, smoke or noise.

Please don’t to fix equipment in personal, unless with the exception of definite indication in

manual.

2

CONTENT

1. Overview...................................................................................................................................... 5

1.1 General ................................................................................................................................................... 5

1.2 Features .................................................................................................................................................. 7

1.3 Principle ................................................................................................................................................. 8

2. Installation ....................................................................................................................................... 9

2.1 Unseal of the equipment ....................................................................................................................... 9

2.2 Equipment check ................................................................................................................................... 9

2.3 Equipment installation.......................................................................................................................... 9

2.4 Equipment testing ............................................................................................................................... 10

3. Feature.............................................................................................................................................11

3.1 Emergency alarm ................................................................................................................................ 11

3.2 Dial-up switch ...................................................................................................................................... 18

3.3 Maintenance......................................................................................................................................... 22 3.3.1 Dial-up switch ............................................................................................................................................ 22 3.3.2 BERT Test Theory..................................................................................................................................... 22 3.3.3 Test process............................................................................................................................................... 24 3.3.4 Configurations ........................................................................................................................................... 24 3.3.5 E1/V.35 data route across ....................................................................................................................... 25

4. Troubleshooting........................................................................................................................... 27

4.1 Optical disappear alerting...................................................................................................................... 27

4.2 E1 alerting................................................................................................................................................ 27

4.3 Corresponding terminal alerting........................................................................................................... 27

4.4 High bit error rate................................................................................................................................... 27

5. Interface ......................................................................................................................................... 28

5.1 Electric features of E1 interface: ........................................................................................................... 28

5.2 Optical interface features:...................................................................................................................... 28

5.3 Manage interface and extend port features:......................................................................................... 29

5.4 Ethernet interface features: ................................................................................................................... 29

5.5 Electric features of V.35 interface:......................................................................................................... 30

5.6 Power supply conditions:..................................................................................................................... 33

5.7 Working environment:............................................................................................................................ 33

5.8 Dimension: ............................................................................................................................................... 33

3

6. Application .................................................................................................................................... 34

Appendix ............................................................................................................................................ 36

1. Lines for management interface .............................................................................................................. 36

2. Lines for Ethernet interface ..................................................................................................................... 36

3. Lines for E1 interface ............................................................................................................................... 36

4. DC power supply....................................................................................................................................... 37

5. Ground wires ............................................................................................................................................. 37

6. Requirements for grounding .................................................................................................................... 38

4

1. Overview

1.1 General

The light transmission apparatus Series MST30 optical transmitter and receiver is

manufactured by the special integrate circuit which is developed independently by RBB

company. It amalgamates standard traditional 2M TDM service interface, V.35 service

interface and 10/100BaseTx ether data service interface, and changes them into high speed

light signal which can be transmitted through optical fiber, so that it is possible for high speed

data service and traditional TDM service to be transmitted contemporarily through optical

fiber, and can satisfy customers’ need for general access to high speed data service and

traditional TDM service switching on with minimum cost.

With easy maintenance, immediate start as soon as power connected MST30A,

MST30AV, MST30AE, MST30VE, and MST30CVE optical transmitter and receiver can also

provides centralized frame structure, and integrated network management function.

MST155M/C multi-service transmission equipment is manufactured based on our

proprietary purpose-built integrated circuits. It integrates the traditional 2M E1, 10/100Base-Tx

(max bandwidth: 100M), and N×64K V.35 services in one equipment so that it can operate

both high-speed digital service and traditional TDM service in one pair of Fiber.

MST155M/C multi-service transmission equipment can also provide centralized rack

structure for easy maintenance as well as plug and play, and at the same time, provide

complete network management functions.

Equipment

name Fiber interface E1 V.35 Ethernet RS232 Management Structure

MST30A 1 1 1 YES Mini desktop

5

MST30AV 1 1 1 YES Mini desktop

MST30AE 1 1 1 YES Mini desktop

MST30CE 1 4 1 YES Mini desktop

MST30VE 1 1 1 1 YES Mini desktop

MST30CVE 1 1 4 1 YES Mini desktop

MST155M 1 1 1 1 1 YES Mini desktop

MST155MC 1 1 1 4 1 YES Mini desktop

KMST30A 1 1 1 YES Centralized

plug-in card

KMST30AV 1 1 1 YES Centralized

plug-in card

KMST30VE 1 1 1 1 YES Centralized

plug-in card

KMST155M 1 1 1 1 1 YES Centralized plug-in card

6

1.2 Features

MST30A and KMST30A can either provide one E1 digital interface, impedance 75Ω/120Ω;

MST30AV and KMST30AV can either provide one N×64K V.35 interface (N= 1~32);

MST30AE provide one and MST30CE four 10/100Base-Tx self-adjusted ether interfaces

respectively, bandwidth 2M;

MST30VE and KMST30VE either provide one N×64K V.35 interface, at the same time,

can either provide one 10/100Base-Tx self-adjusted ether interface, bandwidth 2M;

MST30CVE can provide one N×64K V.35 interface (N = 1~32) and four 10/100Base-Tx

self-adjusted ether interface simultaneously, bandwidth 2M;

Channel E1 supports set-in BERT（Bit Error Rate Test）;

MST30A has favorable interoperability with MST30AV, MST30AE, MST30CE, MST30VE

and MST30CVE;

V.35 interface provides seven kinds of clock module (DCE: native, reversion, outer input;

DTE: RC transmitted and TC received, RC transmitted and RC received, TC transmitted

and TC received, TC transmitted and RC received), adapted to the requirement of all

V.35 interface clock module in the present market;

The V.35 interface clock module, phase, time slot selection function can be set by means

of the network management software;

Provide one RS232 asynchronous data interface;

Provide one management interface, realizing centralized monitor and supporting system

update;

Provide a group of control switches, used for setting the test of equipment maintenance;

Adapt to large-scale chips, simple circuit, low power consumption, high reliability;

Adjust to many types of power supply environment: +24VDC, -24VDC, ±24VDC, -48VDC

or 220VAC;

Small, light, stable and reliable operation and convenient installation;

MST30A, MST30AV and MST30VE can provide centralized frame structure.

MST155M and KMST155M provide 1*E1 route(75Ω or 120Ω) + 1*10/100Base-Tx Ethernet interface(can be adjusted by 0.5M and the max bandwidth 100M) + 1* V.35 route(N*64K)

7

MST155MC provides 1*E1 route(75Ω or 120Ω) + 4*10/100Base-Tx Ethernet interfaces (can be adjusted by 0.5M and the max bandwidth 100M) + 1* V.35 route(N*64K);

MST155M, MST155MC and KMST155M support E1/V.35 data route across.

1.3 Principle

The code type of 2048Kb/s (E1) data signal input transmitting equipment is HDB3, which is

changed into monopole code by single and double switching. The spur track clock is selected by

special centralized chip, and signal decoding is connected again to code flow of drive light signal

after code speed adjustment.

When entering light receiver, the receiving side light signal is transmitted into special

centralized chip by balanced magnifying and NRZ signal generated by refreshing circuit for clock

selection and decoding. It recovers as 2048Kb/s signal through code speed restoring circuit and

inner digital locked loop circuit smoothing; becomes HDB3 signal satisfying the interface’s

requirement through driver circuit.

Figure 1.1 Principle Frame

8

2. Installation

2.1 Unseal of the equipment

1. Fix the installation position of the equipment, clean it up and move the paper box with the

equipment in it near this installation site.

2. Pay attention to the direction of packing case, ensuring right up side.

3. Open the box and take out the equipment and accessories.

The equipment is packaged by special box with anti-vibration protection. There is one

machine in each packing case, including corresponding accessories. Please remember to

examine and check whether it accords with packaging sheet.

【There is precision instrument inside the equipment, please carefully load and avoid

excessive vibration lest affecting the equipment performance. If you find it damaged or

losing any part during transportation, please notify the company service department

so that we can settle it adequately as soon as possible.】

2.2 Equipment check

Check whether the equipment is intact and damaged or not, and verify the power condition.

2.3 Equipment installation

1. Take out the equipment, check whether the equipment is damaged. Fix it to the frame or

other device to make sure that it is stably fixed.

2. Select the input power according to the equipment arrangement, and connect the power

line correctly. Check whether the power supply is normal when powered on (the green

indicator light POWER shines if the power is normal), whether the working condition is

normal （the green RUN light glitters）. If the optical fiber is not connected, the light

module working indicator light WORK (green) does not shine and the synchronous lost

9

indicator light SYNL (red) shines.

3. Connect the optical fire linked to peer equipment, the light module working indicator

WORK (green) shines in normal condition and the SYNL (red) extinguished; if it is not

normal, please check whether the light channel is normal, the end fiber can receive and

transmit and the peer equipment is powered.

Connect the E1 signal line, if the side equipment of the customer can work adequately, the

WORK (green) light corresponding this E1 signal shines, AIS (yellow) light extinguished.

2.4 Equipment testing

1. Power supply: connect the line of the power supply correctly, turn on the power, the

power light (Green) should be on, which indicates that the power works properly.

2. Equipment operation: When the power is on, the equipment undergoes initialization;

when the RUN light (Green) twinkles, it shows that the equipment operates normally;

3. Fiber Interface: When the equipment operates normally, use tail fiber to circulate the fiber

interface. If the work light (Green) of the light module is on and the SYNL(Red)is off, it

indicates that the fiber interface works properly.

4. E1, V.35 interface: When the equipment works properly, make the fiber interface

self-loop-back, use error rate measuring equipment to test E1, V.35 interface, no error

rate indicates normality.

5. Ethernet interface: When the equipment works properly, use two computers which have

net-interface card, to connect the Ethernet interfaces of the equipment. Ping the two

computers to test whether the receiving/sending packet is correct.

6. RS232 interface: When the equipment works properly, make the fiber interface

self-loop-back, connect the RS232 interface with PC Serial-Ethernet, operate the “Super

Terminal” in the PCs (9600bit/s), forbid to choose ECHO of the local character, key in

the testing characters, the received characters will be shown in the window. If they are

the same as the key-ins, it shows that the RS232 interface works properly.

10

3. Feature

3.1 Emergency alarm

MST series optical transmitter provides a complete emergency alarm report and situation

instructions. If the red light is on, it means serious alarm and the system couldn’t work

normally. If the yellow light is on, it shows there are some alarms, while the system basically

works ok. And the green light shows the system works properly. The detailed definition of

each instruction light is as follows:

Fig 3.1 Sketch Map of MST30A Front Side

Fig 3.2 Sketch Map of MST30A Back Side

Fig 3.3 Sketch Map of MST30AV Front Side

Fig 3.4 Sketch Map of MST30AV Back Side

11

Fig 3.5 Sketch Map of MST30AE Front Side

Fig 3.6 Sketch Map of MST30AE Back Side

Fig3.7 Sketch Map of MST30CE Front Side

Fig 3.8 Sketch Map of MST30CE Back Side

Fig3.9 Sketch Map of MST30VE Front Side

Fig 3.10 Sketch Map of MST30VE Back Side

12

Fig 3.11 Sketch Map of MST30CVE Front Side

Fig 3.12 Sketch Map of MST30CVE Back Side

Fig 3.13 Sketch Map of MST155M Front Side

Fig 3.14 Sketch Map of MST155M Back Side

Fig 3.15 Sketch Map of MST155MC Front Side

Fig 3.16 Sketch Map of MST155MC Back Side

13

The alarm instructions of the table-top equipment

Definition Proper Operation Loop-back BERT

POWER

(Green)

If the power supply is normal, it is

ON

RUN

(Green)

Under the status of dial-up control,

it is sparkling. (On 1/4 second +

Off 3/4 second, repeated);

under the status of network

management control, it is

sparkling.(On 3/4 second+ Off 1/4

second, repeated.)

STA (Yellow) On=frame E1 remote alarm

Flash with RUN in phase = local

E1 warning

Flash with RUN reversely= remote

E1 warning

It sparkles if not in simultaneity. It is off

if there is no error code under the

simultaneous status.

The light is on if the

error code<10-3, the light is sparkle if

the

error code > 10-3

and maintain the most serious error

code status after becoming

simultaneously.

SYLOS/1E-3(Red) On when optic LOS or the error

code >10-3

Off if the data from the fiber

interface is normal

1E-6 (Yellow) On when the error code of the fiber

interface>10-6


14

interface is normal;

(OPT)WORK

(Green)

On if the fiber receiving power is

normal

RA (Yellow) On if the light of the peer interface

disappears or LOS

(E1)WORK

(Green)

on while connection, off while

disconnection.

Sparkles if there exists

loop-back in E1 local

equipment

Sparkling indicates receiving test code

from the local equipment which

corresponding with E1 interface

AIS (yellow) On when E1 receives AIS Sparkles if there exists

loop-back in E1 peer

equipment

Sparking indicates sending test code

from the local equipment


FSL Works under the frame method.

On if the 2M frame losses

simultaneously

Sparkles from the peer

equipment

Sparkling indicates receiving test code

from the other interface corresponding

with local interface

TD Sparkles when the V.35 interface

sending data

RD Sparkles when the V.35 interface

receiving data

ULK On if sending data from V.35 is not

match with the set clock mode

Sparkle Sparkling indicates sending test code

from the other interface corresponding


10/100 Ethernet interface bps: on=100M,

off=10M

L/A Ethernet interface connecting

status: on=connection, sparkle

=there are some data input

15

Fig 3.13 Sketch Map of insert-card panel

The alarm instructions of the card-mode equipment

Definition Proper operation Loop-back BERT

P

(Green)

On when 5V power supply is

normal

R

(Green)

Under the status of dial-up control,

it is sparkling. (On 1/4 second + Off

3/4 second, repeated); under the

status of network management

control, it is sparkling.(On 3/4

second+ Off 1/4 second, repeated.)

ST

(Yellow)

On=frame E1 remote alarm

Flash with RUN in phase = E1 local

warning

Flash with RUM reversely= other

terminal warning

It sparkles if not in simultaneity. It is off

if there is no error code under the

simultaneous status.

The light is on if the

error code<10-3, the light is sparkle if

16

the

error code > 10-3

and maintain the most serious error

code status after becoming

simultaneously.

SL (Red) Off if the data from the fiber

interface is normal; on if fiber LOS

or error code is 10-3

E6 (Yellow) On when the error code of the fiber

interface>10-6


interface is normal;

(OPT)W

(Green)

On if fiber receiving power is

normal, otherwise, is OFF

RA(Yellow) On if the peer interface fiber

disappears or LOS alarms

(E1)W

（Green）

on while connection, off while

disconnection.


loop-back in E1 local

equipment.

Sparkling indicates receiving test

code from the peer interface


A (Yellow) On when E1 receives AIS Sparkles if there exists

loop-back from peer E1

interface

Sparkling indicates sending test code

from the peer interface


FS (Red)

Works under the frame method. On

if the 2M frame losses

simultaneously


loop-back from peer

V35 interface

Sparking indicates receiving test code

from the peer interface corresponding


TD (Green) Sparkles when the V.35 interface

sending data

17

RD(Green) Sparkles when the V.35 interface

receiving data

UL (Yellow) On if the sending data from V.35 is

not match with the set clock mode


loop-back in V.35

Sparkling indicates sending test code

from the peer interface corresponding


S (Green) Ethernet interface bps: on=100M,

off=10M

L (Green) Ethernet interface connecting

status: on=connection, sparkle

=there are some data input

3.2 Dial-up switch

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OFF=1 ON=0

Fig 3.14 Dial-up switch definition

Dial-up switch is used to set the maintaining and testing functions of the equipment. All the

maintaining and testing functions could be set through net management.

Forbid to use the dial-up switch could be set through the network management, and this

setup could be maintained when the power is cut off.

Dial-up switch is in effective default setting when the equipment is left from the factory

“Forbid to use the dial-up switch” must be pre-set before making maintenance and tests

through network-management

Set maintaining operation of the power-cutoff clearance through network management

Dial-up 1, 2 (applicable to all equipments): maintenance and test mode choice (OFF=1,

ON=0)

00= project BERT Test

01= long-distance equipment loop-back, control the long-distance equipment E1

18

interface fiber loop-back, the time limit for the loop-back is one hour

10= keep by the factory

11= normal mode

Else dial-up settings

MST30AV, KMST30AV dial-up setting

Dial-up3: No definition

Dial-up4: V.35 interface CRC choice (OFF=1、On=0)

0=function

1=prohibition

Dial-up5: V.35 interface clock phase choices

0=opposite phase

1= same phase

Dial-up 6, 7, 8：V.35 clock interface clock mode

000=DTE Mode, in term of RC, sends TD, in term of TC, collects RD

001=DTE Mode, in term of TC, sends TD, in term of TC, collects RD

010=DTE Mode, in term of RC, sends TD, in term of RC, collects RD

011=DTE Mode, in term of TC, sends TD, in term of RC, collects RD

100= No definition

101=DCE Mode, V.35 External clock

110=DCE Mode, E1 Slave clock

111=DCE Mode, E1 Master clock

MST30AE dial-up setting

Dial-up 3: Ethernet lengthen choices

0=1536/1536；

1=1518/1522。

Dial-up 4: Clock choices

0=Recovery clock

1=Local clock

MST30CE Dial-up setting

19

Dial-up 3:4 Ethernet insulation function choices

0=function

1=prohibition

Dial-up4: Clock choices（OFF＝1、ON＝0）

0= Recovery Clock

1=Local Clock

MST30VE, KMST30VE Dial-up setting

Dial-up3: Ethernet lengthen choices

0=1536/1536

1=1518/1522

Dial-up 4: V.35 interface CRC Function choices（OFF＝1, ON＝0）

0= Function

1= Prohibition

Dial-up 5: V.35 interface Clock Phase choices（OFF＝1, ON＝0）

0=opposite phase

1= same phase

Dial-up6, 7, 8: V.35 Clock interface Clock Mode（OFF＝1, ON＝0）





100=No definition

101= DCE Mode, V.35 External Clock

110=DCE Mode, EL Slave Clock

111= DCE Mod, EL Master Clock

MST30CVE Dial-up setting

Dial-up 3: Ethernet Insulation function choices（OFF＝1, ON＝0）

0=function

1=prohibition

20

Dial-up 4: Clock Choices（OFF＝1, ON＝0）

0=Recovery Clock

1=Local Clock

Dial-up 5: V.35 interface Clock phase choices（OFF＝1, ON＝0）

0=opposite phase

1=same phase

Dial-up6, 7, 8: V.35 Clock interface Clock Mode（OFF＝1, ON＝0）





100=No definition

101= DCE Mode, V.35 External Clock

110=DCE Mode, E1 Slave Clock

111=DCE Mode, E1 Master Clock

MST155M and KMST155M Dial-up setting Dial-up 1：E1 loop route choosing（OFF＝1、ON＝0）

0＝Test；

1＝Normal。

Dial-up 2：V.35 loop route choosing（OFF＝1、ON＝0）

0＝Test；

1＝Normal。

Dial-up 3, 5~8 are same with MST30VE。

Dial-up 4：E1/V.35 data route across（OFF＝1、ON＝0）

0＝E1 in route 2，V.35 in route1；

1＝E1 in woute1，V.35 in route 2。

MST155MC Dial-up setting Dial-up 1：E1 loop route choosing（OFF＝1、ON＝0）

0＝Test；

1＝Normal。

21

Dial-up 2：V.35 loop route choosing（OFF＝1、ON＝0）

0＝Test；

1＝Normal。

Dial-up 3, 5~8 are same with MST30CVE。

Dial-up 4：E1、V.35 data route across（OFF＝1、ON＝0）

0＝E1 in route 2，V.35 in route1；

1＝E1 in woute1，V.35 in route 2。

（K）MST30AV time slot dial-up(only for MST30AV and KMST30AV)：dial-up 0：ON E1 is framed mode and in that case use switch 1-3 to choose the relevant time slot; OFF E1 is unframed mode and in that case other dip switches are unable to work.

Chart 5.19 Time slot dial-up

3.3 Maintenance

3.3.1 Dial-up switch MST30 series optical transmitter and receiver supports loop-back, BERT tests, etc. through

net manger or dial-up.

Control method for maintenance test

Default dial-up switch is valid at ex-work.

Net manager can select “maintenance operation by dial-up switch” or

“maintenance operation by net manager”.

When the maintenance test is operated by net manger, “maintenance operation

by net manager” shall be selected.

Clear power-failure through the maintenance operation set by net manger.

3.3.2 BERT Test Theory The simple error monitor built in the equipment can designate the data channel for receiving

22

and transmission through dial-up or net manger, the indicator light on the panel can indicate

the synchronized mode, error rating in the error test (No error, <10-3, >10-3), the net manger

can record the occurring time and count of errors. BERT needs some supplementary means

such as end-to-end E1 loop-back, local E1 inline, etc.

Fig 3.15 BERT principle

Project detect is designed for transferring and receiving the data in regular condition. Take

the first E1channel for example. The process of detect is as follow:

To connect optical fiber rightly and ensure the proper operation of transmitting and receiving

data in two-side equipment;

To set remote equipment corresponding with E1 interface toward optical interface direction to

loopback, the switch of dip switch move from

To make sure the start of loopback by indicator light—RLOS-1 in local interface is off;

To set channel EERT of local interface E1, the switch of dip switch move from

23

3.3.3 Test process Engineering test refers to test, and the procedure is shown as below:

11 Confirm that the on both ends function normally, and place the local-end dial-up

switch at 11

Set the end-to-end equipment’s corresponding E1 port to loop back in the optical

direction, and move the dial-up switch from 11 to 01

The loop-back setup is valid when the indicator flickers (local end AIS flickering)

Setup at the local-end E1 channel BERT, move dial-up switch from 01 to 00

3.3.4 Configurations All the configurations of MST30 series and MST155 series can be set up via the network

management software and part of the configurations can be set up by the dip switch. Customer can open/close the DIP function via the network management software and factory default is DIP enable.

Chart 6.1 Set-up mode configuration

Default V.35 interface configurations of MST30AV, MST155M, MST155MC, KMST30AV and KMST155M are shown on the Chart 6.4.

Chart 6.2 MST30AV、MST155M、MST155MC、KMST30AV、KMST155M configuration

24

Chart 6.3 DTE Mode V.35 configuration

Default E

thernet interface configurations of MST30AE are shown on the Chart 6.4

Chart 6.4 MST30AE configuration

Note: These configurations should be made by specified configuration software which can be

asked for from our company or downloaded from our website.

3.3 MST155M/C support data channel optional exchange of E1/V.35 so that V.35 channel is

easily corresponding to E1channel of remote equipment. .35 data, which take up original channel model or ch data channel exchange of E1/V.35.

.5 E1/V.35 data route across

Network management may choose Vchoose regular E1 channel model to rea

Route across（factory default）

CH1 CH2

E1 ch2 V.35

Engross the route

CH1 CH2

V.35 E1 ch2

25

4. Troubleshooting

4.1 Optical disappear alerting

Check the connection between fiber and optical transmitter and receiver;

Check if the transmit/receive fiber is oppositely connected;

Check the optical port of the device;

Check the optical link. Test the optical receiving power. If no optical power, then

exchange the receiving and transmitting fiber with the corresponding terminal

simultaneity and check.

4.2 E1 alerting

E1 interface WORK light is the operating light which should be permanent on in normal status.

AIS light is the alerting light when receiving all 1 code.

WORK light is not on. Check if E1 port cable is properly connected. Check onoff and

stretch of the connection cable. Check if the connected client device is power on and

works well.

AIS light is on. Check the operating status of the connected client device.

4.3 Corresponding terminal alerting

If current terminal RA (Yellow) light is on, it means the corresponding terminal receiving signal

disappeared or synch lost. Check current terminal optical transmitting signal and

corresponding terminal receiving signal. Check the optical link.

4.4 High bit error rate

Check if the interface impedance is properly set. If it is OK, please connect the bit error test

set to check by piecemeal, and then use POE method to check if the error is coming from

optical link or device itself.

27

5. Interface

5.1 Electric features of E1 interface:

Nominal rate: 2048Kbps，margin±50ppm

Interface code type: HDB3

Interface impedance: 75Ω (unbalanced) or 120Ω (balanced)

Electric features of digital interface: compliant with ITU—T G.703 recommendations

Jitter transfer performance: compliant with ITU-T G.823 recommendations

Input Jitter tolerance: compliant with ITU-T G.823 recommendations

Output jitter: compliant with ITU-T G.823 recommendations

Level: ±2.37V±10% or ±3.00V±10%

Interface connector: RJ45 or BNC coaxial

Chart 9.1 Wave model of E1 line code

5.2 Optical interface features:

Transmission optical power: -3dBm～-8dBm Receiving sensitivity: -33dBm～- 40dBm Fiber interface: dual SC/dual FC/single SC Applicable fiber: single-mode, multi-mode

RX

TX

28

Chart 9.2 Optical interface definition

5.3 Manage interface and extend port features:

Interface: RS-232； Interface connector: RJ-45； Manage interface baud rate: 57600bit/s； Extend max baud rate: 19200bit/s。

GND TX RX

Chart 9.3 RS-232 interface definition

RX GND TX

DTR CD CTS

RTS

1 2 3 4 5 6 7 8

Chart 9.4 Extend port definition

5.4 Ethernet interface features:

Interface: 10/100Base-Tx, support auto-negotiation Interface specification: compliance with IEEE-802.3u Connector: RJ45

3

TX+ TX- RX+ RX-

2 1 6

Chart 9.5 Ethernet interface definition

29

5.5 Electric features of V.35 interface:

interface speed:n×64K no traffic control, transparent transmission interface connector:DB25 slot work mode: DCE, DTE optional

(DCE mode: E1 master clock/E1 slave clock/V.35 external clock):

Pin M/34 I/O Definition Function

1 A GND Signal ground

2 P I TDA Transmit data cable A

3 R O RDA Receive data cable A

4 C I RTS Send request

5 D O CTS Send permission

6 E O DSR Data device ready

7 B GND Protected ground

8 F O DCD Data carrier detect

9 X O RCPB Receive clock cable B

10 I Reserved

11 W I ETCB External clock cable B

12 AA O TCPB Transmit clock cable B

13 NC

14 S I TDB Transmit data cable B

15 Y O TCPA Transmit clock cable A

16 T O RDB Receive data cable B

17 V O RCPA Receive clock cable A

18 NC

19 NC

20 H I DTR Data terminal ready

21 NC

22 NC

23 I Reserved

30

24 U I ETCA External clock cable A

25 NC

31

V.35 interface definition (DTE mode):

Pin F/34 I/O Definition Function

1 A GND Signal ground

2 R I RDA Receive data cable A

3 P O TDA Transmit data cable A

4 D I CTS Send permission

5 C O RTS Send request

6 H O DTR Data terminal ready

7 B GND Protected ground

8 O Reserved

9 W O ETCB External clock cable B

10 AA I TCPB Transmit clock cable B

11 X I RCPB Receive clock cable B

12 O Reserved

13 NC

14 T I RDB Receive data cable B

15 O Reserved

16 S O TDB Transmit data cable B

17 U O ETCA

18 NC

19 NC

20 E I DSR

21 NC

22 NC

23 Y I TCPA Transmit clock cable A

24 V I RCPA Receive clock cable A

25 NC

32

5.6 Power supply conditions:

DC voltage: -48VDC, margin: -36V~-72V

Power supply ripple: ≤240mVp-p

AC voltage: 220VAC±15% 50Hz

Power consumption: ≤10W

5.7 Working environment:

Environmental temperature: 0~45 Relative humidity: ≤85%（35） Air pressure: 86~106Kpa

5.8 Dimension:

200×145×45 mm

33

6. Application

Application 1

Application 2

Application 3

34

Appendix

1. Lines for management interface

The management interface is connected to the serial port of PC via simplified RS232

interface, therefore simply connect the following three signal lines: RXD, TXD and GND. See

the figure below for the corresponding relations.

Appendix Fig. 1 Production of connecting lines for management interface

4 5 6

5 2 3

RJ45 DB9 PC 设备

2. Lines for Ethernet interface

Two standards for the sequence of lines of Ethernet interface EIA／TIA 568A and EIA／TIA

T568B are shown as Appendix Fig. 2. When producing RJ45 connectors, be sure to follow

these standards.

Appendix Fig. 2 Production of connecting lines for Ethernet interface

3. Lines for E1 interface

Impedance of equipment interface: 75Ω, interface: BNC coaxial.

75Ω non-balance mode, the transmission impedance of the connecting lines are required to

36

be 75Ω and use 75Ω coaxial cable. If the user’s equipment is built with a coaxial interface,

see Appendix Fig. 3 for the production of connecting lines.

BNC coaxial head 75Ω coaxial cable Coaxial head matching with the user’s equipment,

connect it to the peer equipment

Appendix Fig. 3 Production of connecting lines between E1 interface

Coaxial headmatching with the user’s equipment, connect it to the peer equipment

BNC 75Ω Cable

4. DC power supply

See the figure below for the rear panel of DC power supply equipment.

Appendix Fig. 4 Rear panel of power supply

GND -Vin +Vin

For DC -48V models, -Vin to -48V, +Vin to power ground wire and GND to protection ground

wire.

5. Ground wires

This equipment uses three types of ground wires: power ground, operating ground and

shielding ground.

Power ground: Any “-48V” anode that supplies power to the rack must be connected to the

ground. That line is called power ground after reaching the rack.

Operating ground: At the system board level, all power supplies for various circuits should be

converted from –48V via DC/DC converter, and the output of concerting circuit is insulated

from “-48V”. All these converted power supplies should have a common joint as reference

potential point, and the common potential points of all boards should be connected together,

37

called operating ground.

Shielding ground: All conductive parts of metal and non-metal components that play an

electromagnetic shielding role in each unit, system board and tire-3 structure of various racks

in the system must be connected to one wire, which is called shielding ground.

6. Requirements for grounding

Ground wire

Power ground Operating ground Shielding ground (protection ground)

Outside of the building

Share one independent grounding system for grounding.

Another grounding system to the ground

In the power room

Directed to outside of the building, and connect it to the anode of the -48V power supply

Connect it to the shielding components, to outside of the building

Inside the building

In the machine room

Directed to the rack in the machine room via a private line

Separately directed to the rack

Connect up on top of the rack Separately directed to outside of the rack

On the rack Power ground to unit

Operating ground to unit

Shielding ground to unit

On the unit Power ground to various boards

Operating ground to various boards

Shielding ground to various boards

Easy Broadband Technology Co., Ltd.

Add: Rm301, Suite A, Bl.3, 41, Beida St., Xizhimen, Beijing

Tel: 010-62235760

Fax: 010-62237505

Zip code: 100044

URL: www.ebbnetwork.com

38

ebb mst30 & mst155m series

Documents