stm 1 configuration

ENGINEERING INSTRUCTIONS TRANSMISSION CPE STM1

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BHARAT SANCHAR NIGAM LIMITED of 11

INSTALATION AND TESTING PROCEDURE OF

CUSTOMER PREMISES EQUIPMENT STM1 ITI Make (TEJAS)

1.0 SCOPE: This Engineering Instruction provides Installation information and describes various tests to be conducted on CPE (Customer Premises Equipment) STM1 during commissioning. The system is manufactured by M/s TEJAS Networks, Inc. USA and supplied by ITI.

2.0 GENERAL: The equipment establishes a 622/155 Mb/s trans system whose high flexibility allows to set up various configurations mainly line terminal or insert/ drop multiplexer with protection option. The equipment can be plesiosync or synchronous i.e. 2/34/140 PDH tributaries or 155.520/622 Mb/s synchronous tributaries. The equipment can be configured independently in Mesh, Ring, linear and Bus architectures and also a mix of the above. Also it can be flexibly configured with equipment redundancy for all or for a selected few among the modules. The main features of the system is

1) Easy network manageability 2) Flexible configuration 3) Lower cost per line 4) Easy upgradeability 5) Support for both data and voice over SDH 6) Higher reliability

3.0 INSTALLATION: 3.1 Unpacking: First check the shipment container for any kind of damage and then unpack the equipment pack with upright mark always at the top, remove all shock proof materials, polyethylene packing and ascertain and confirm that no physical damage taken place and items available as per packing list. 3.2 Installation of the Rack: Installation requires fixing of Rack and mounting sub-rack structure in the rack. Drill hole on the floor to fix the rack. (Holes are provided in the base plate of the rack). Fixing of the rack is done by anchor bolt jammed by the help of plugging compound and ensures the verticality of rack. 3.3 E3 (34Mb/s) connection: The E3 (34Mb/s) traffic is received and transmitted through an interface (TE31) card. The connectivity is made through two BNC connectors (Tx & Rx). 3.4 Ethernet connection: The Ethernet traffic is received and transmitted through an Ethernet interface (TP01) card. The connectivity is made through an RJ45 connector. Connect the cable to RJ45 connector to the marked position and ensure that retention slide operates to hold the connector in place. 3.5 STM1 connection: (Optical) The STM1 optical traffic is received and transmitted through STM1 interface on the base card. The connectivity is made through an SC connectors (Tx & Rx).

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3.6 STM1 connection: (Electrical) The STM1 electrical traffic is received and transmitted through STM1 interface on the base card. The connectivity is made through two BNC connectors (Tx & Rx). 3.7 Diagnosis connection: The system allows diagnosis through an RJ45 connector available on base card. Connect the cable to RJ45 connector and ensure that retention slide operates to hold the connector in place. 4.0 PROCEDURE FOR ACCESS & CONFIGURE THE EQUIPMENT: Switch ON the Node and wait for at least 7 minutes for the node, to completely come-up [before trying to ping or access the node (through Internet Explorer)]. The Factory default IP address for Tejas Multiplexer is: 192.168.1.254 or the One, which is present on the Sticker on the Node. Please use a PC/Laptop and Configure the PC/laptop IP Address to: 192.168.1.200 Subnet Mask to: 255.255.255.0 & Default Gateway to: 192.168.1.1 or the Node IP Address. Connect a cross cable to the PC/Laptop Ethernet port to the NMS port on Tejas MC-1/4/LT/CP. (Please use straight cable, if both the Tejas Node & PC/Laptop are connected through Hub/Switch) Open the Internet Explorer in the Windows PC, type the line below in the address space: http://192.168.1.254:20080 Give the User Name: tejas and Password: j72e#05t Configuration:(One Time Configuration) 1) Name: Give the Name of the Site/Location. ( As you wish) 2) Router ID: Give the Address ( Ex: 192.168.254.1) 3) Ethernet IP: Give the Address ( Ex: 192.168.1.254) 4) Contact: Give the contact details (As you Like) 5) Location: Give the location name. ( As you like) Submit changes and accept the Modifications. (System will go to the warm-reboot state and after 3 minutes, you can login to the system) If you are connecting other Tejas Node to this Local Node, then set the Remote node with the Router ID & Ethernet IP as follows: Router ID: Give the Address ( Ex: 192.168.254.2) Ethernet IP: Give the Address ( Ex: 192.168.2.254) Click on Provisioning ----> STM Ports ----> STM1-3-1----> *) Admin Status: Admin Up *) ECC byte selection: DCC_M *) TIM Action: Tim ignore Submit changes and accept the Modifications.

*) Click on Provisioning ----> STM Ports ----> AU4-3-1-1-1----> *) Signal Label: tug structure *) TIM Action: Ignore TIM Submit changes and accept the Modifications. Click on Provisioning ----> STM Ports ----> STM1-3-2----> *) Admin Status: Admin Up *) ECC byte selection: DCC_M *) TIM Action: tim_ignore Submit changes and accept the Modifications.


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EI NO. *) TIM Action: Ignore TIM

*) Click on Provision (main menu) -----> Click on VCG Group -> VCG-4-101 --> Add new VC

Click on Provisioning ----> STM Ports ----> AU4-3-1-1-1----> *) Signal Label: tug_structure

Submit changes and Accept the Modifications. *) Click on Provisioning (main menu) -----> Click on OSPF Parameters *) OSPF Globle: Enable *) OSPF Ethernet: Enable Submit changes and Accept the Modifications. ( System will go to the warm-reboot state and after 3 minutes, you can login to the system) *) Click on Provision (main menu) -----> Click on Cross connect --->Click on Add Cross connect-> Cross connect capacity = VC12 Source port = STM1-3-1 source time slot (K,L,M ) = select from the menu (TUG Structure) destination port = E1-4-1 Destination time slot = --- Enable Source protection and select the TUG Structure. Submit the changes and accept the modifications. Repeat the above same steps for other E1/E3. *) Click on Provision (main menu) -----> Click on E1 ports Admin Status = adminUp Submit the changes and make all E1(required) ports admin status to AdminUp. *) Click on Provisioning (main menu) -----> Click on Ethernet ports Admin Status = adminUp Submit the changes and make required ports admin status to AdminUp. *) Click on Provision (main menu) -----> Click on VCG Group ---> VCG-4-x Admin Status: adminUp Sequencing Mode: Automatic Sequencing

Port: STM1-3-1 STM No: 1 K,L,M = Select the Assigned TUG structure and Assign Sequence Number. Submit the changes and keep on adding the required VC-12's. *) Click on Timing Manager (main menu) ---> Nominate Clock ----> *) Clock Reference: Port *) Clock Reference Port: STM1-3-1 *) Priority: 1 Submit the changes and do the same steps, If you want to nominate more than one Clock source. *) Click on Fault Management (Main Menu) ----> Alarms -----> See the current Alarms *) Click on Fault Management (Main Menu) ----> Events -----> See the History of Alarms *) Click on Fault Management (Main Menu) ----> Events -----> Show All Alarms -----> See the History of All Alarms

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6.0 TESTS AND TEST PROCEDURE: 6.1 Preliminary checks: Before commencing the testing, certain checks are carried out to see that the equipment is installed as per the layout, proper DC wiring to the equipment is done. Fuses of proper rating are provided and grounding of the equipment is properly done. Tests are normally divided into two categories namely Local Tests and Through Tests.

6.2 LOCAL TEST: These tests include power supply to the rack, Laser output, Receiver sensitivity and check of alarms, check of BER on local loop and AIS Frequency measure etc. 6.2.1 Check of power supply: Measure Dc Voltage drop from float-cum battery charger to the input of equipment and record. It should be less than 1.0 volt. 6.2.2 Test on optical interface: 6.2.2 (a) Measure Optical bit rate = ------------- 155.520/622.080 Mb/s 6.2.2 (b) Measure Optical Trans power = ------- In dbm. For continuous trans power, Click on Provisioning--> STM Ports ----> STM1-3-1----> *) Admin Status: Admin Up *) ALS Mode: disable Click on Provisioning--> STM Ports ----> STM1-3-2----> *) Admin Status: Admin Up *) ALS Mode: disable Limit: For S1.1 -8 to –15 dbm For L1.1 0 to –5 dbm For L1.2 0 to –5 dbm 6.2.2 (c) Check of Receiver sensitivity/ Dynamic range: Connect the optical variable attenuator in between optical trans and receive port and Laser in forced on condition feed and receive 2 Mb/s between TX and RX with the help of PDH/ SDH analyser. Reducing the power by varying optical attenuator, where the BER with no error, measure the lower threshold point through optical power meter at the output of attenuator. Receiver sensitivity Limit: For S1.1 -28 dbm For L1.1 -34 dbm For L1.2 -34 dbm


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6.2.2(d) Check of Optical over load: To measure the optical overload point test set up is same and increase the receive power by varying optical attenuator, where the BER with no error, measure the overload point through optical power meter at the output of attenuator. Receiver over load Limit: For S1.1 -8 dbm For L1.1 -10 dbm For L1.2 -10 dbm 6.2.2 (e) Laser safety power in case of fiber break: Three modes are available. i) ALS Disable In the ALS disable mode the laser source available continuously (forced on condition) ii) ALS Automatic--Laser on only when receive power available. iii) ALS Manual--Laser on by manual operation through PC/ Laptop. 6.3.0 Test on Electrical interface: 6.3.1 Bit rate----------------------- Limits: 2.048 Mb/s-------------+/- 50 ppm 34.368 Mb/s-----------+/- 20 ppm 139.264 Mb/s----------+/- 15 ppm 155.520 Mb/s----------+/- 20 ppm 6.3.2 BER Check: With the help of PDH/ SDH analyser measure the BER in each tributary for a period of 15 minutes by local loop at optical aggregate The result should be no error. For 2.048 Mb/s-- clock offset of 0ppm, +50ppm and -50ppm. For 34.368 Mb/s-- clock offset of 0ppm, +20ppm and -20ppm For 139.264Mb/s-- clock offset of 0ppm, +15ppm and -15ppm For 155.520Mb/s-- clock offset of 0ppm, +20ppm and -20ppm 6.3.3 Check of AIS clock: Measure the AIS clock with the help of PDH/SDH analyzer or Frequency counter at the RX electrical port of each tributaries with data input fail and optical input fail Limits: 2.048 Mb/s-------------+/- 50 ppm 34.368 Mb/s-----------+/- 20 ppm 139.264 Mb/s----------+/- 15 ppm 155.520 Mb/s----------+/- 20 ppm 6.3.4 Output Jitter measurement: Measure the Output Jitter tolerance with the help of PDH/ SDH Analyzer. Filter For 2.048 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</= 0.20 UI PP Filter For 34.368 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</= 0.15 UI PP Filter For 139.264 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</=0.075UI PP Filter For 155.520 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP


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Hp2Lp: -----------------------</= 0.15 UI P 6.3.5 Input Jitter measurement: Measure the Input Jitter tolerance with the help of PDH/ SDH Analyser. Frequency Measured value Limit For 2.048Mb/s: f1 20 Hz ------------- >/= 1.5 UI PP f2 93 Hz ------------- >/= 1.5 UI PP f3 3700 Hz ------------- >/= 0.2 UI PP f4 100 Khz ------------- >/= 0.2 UI PP For 34.368Mb/s: f1 100 Hz ------------- >/= 1.5 UI PP f2 1.0 Khz ------------- >/= 1.5 UI PP f3 10 Khz ------------- >/= 0.2 UI PP f4 800 Khz ------------- >/= 0.2 UI PP For 139.264Mb/s: f1 200 Hz ------------- >/= 1.5 UI PP f2 500 Hz ------------- >/= 1.5 UI PP f3 10 Khz ------------- >/= 0.2 UI PP f4 800 Khz ------------- >/= 0.2 UI PP For 155.520Mb/s: f1 500 Hz ------------- >/= 1.5 UI PP f2 6.5 Khz ------------- >/= 1.5 UI PP f3 65 Khz ------------- >/= 0.2 UI PP f4 1300 Khz ------------- >/= 0.2 UI PP 7.0 SDH test: Mapping/ De-mapping Test: 7.1 Mapping: The CPE SDH system Trans optical port is connected to the Receive STM1 optical input of the SDH analyser and the PDH 2/34/140/155Mb/s Trans electrical output of the Analyser is connected to the PDH 2/34/140/155Mb/s.tributaries electrical RX of CPE SDH equipment. Measure the BER for 5min.and the result better than 1x10-10. 7.2 De-mapping: The Optical STM1 Trans output of the SDH analyzer is connected to the receive optical port of the CPE SDH system and the PDH 2/34/140/155Mb/s. tributaries electrical TX of CPE SDH equipment is connected to the 2/34/140/155Mb/s receive electrical input of the Analyser. Measure the BER for 5min.and the result better than 1x10-10.


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8.0 Alarms: Connect the Optical STM1 trans output of the SDH Analyser to the receive optical port of CPE SDH system and vice versa, inject alarm with Anomaly/ Defect analyser and record the alarms. (Note: For the electrical 155Mb/s the above set up is same but instead of optical port, electrical port to be connected both in Analyser and CPE SDH system.) Monitor the current alarm through PC/ Laptop by local access and select Fault management Alarms The Trans set up of the SDH analyser as TX STM1 Optical / Electrical AU4 VC12 2Mb/s PRBS 15-1 Ch 1/1/1 RX STM1 Optical / Electrical AU4 VC12 2Mb/s PRBS 15-1 Ch 1/1/1 Alarm Alarm Severity Object Acknowledgement Simulated Information status LOS Loss of signal Critical STM1-3-1/2 Unacknowledged. LOF Loss of frame Critical STM1-3-1/2 Unacknowledged MS-AIS Alarm Indication signal (Line) Critical STM1-3-1/2 Unacknowledged MS-RDI Remote defect indication (Line) Critical STM1-3-1/2 Unacknowledged AU LOP Loss of pointer Major AU4 1-3-111 Unacknowledged AU AIS Alarm indication signal Major AU4 1-3-111 Unacknowledged HP UNEQ Signal label unequipped Major AU4 1-3-111 Unacknowledged HP PLM Payload mismatch Major AU4 1-3-111 Unacknowledged HP RDI Remote defect indication Major AU4 1-3-111 Unacknowledged TU LOM Loss of Multi-frame Major TU12 1311111 Unacknowledged TU AIS Alarm Indication signal (Term) Major TU12 1311111 Unacknowledged LP UNEQ Signal label unequipped Major TU12 1311111 Unacknowledged LP RDI Remote defect indication (Term) Major TU12 1311111 Unacknowledged THROUGH TEST: 8.1. Check of Optical receive power: For continuous power, Click on Provisioning--> STM Ports ----> STM1-3-1----> *) Admin Status: Admin Up *) ALS Mode: disable Click on Provisioning--> STM Ports ----> STM1-3-2----> *) Admin Status: Admin Up *) ALS Mode: disable disconnect the fiber line receive and connect it to the optical power meter. Measure the receive power before connector and introduce suitable optical pad for normal working condition. Measure the receiver in power after pad and record the value. After the receive power measurement, set both the optical Trans ports *) ALS mode: Automatic With the help of optical Time Domain Reflecto meter measure the route length and calculate the expected receive power and compare the result.


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8. 2 BER Check: With the distant end loop at 2, 34, 140, 155 measure the Bit error ratio for at least 5 minutes each at normal clock & +/- the prescribed offset value and record. No error should be observed. 8.3 Check of AIS clock: Measure the AIS clock with the help of PDH/SDH analyzer or Frequency counter at the RX electrical port of each tributaries with data input fail at distant end. Limits: 2.048 Mb/s-------------+/- 50 ppm 34.368 Mb/s-----------+/- 20 ppm 139.264 Mb/s----------+/- 15 ppm 155.520 Mb/s----------+/- 20 ppm 8.4. Output Jitter Measurement: With the distant end loop at 2, 34, 140, 155 measure the Output Jitter tolerance with the help of PDH/ SDH Analyser. Filter For 2.048 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</= 0.20 UI PP Filter For 34.368 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</= 0.15 UI PP Filter For 139.264 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</=0.075UI PP Filter For 155.520 Mb/s Limit Hp1Lp: -----------------------</= 0.75 UI PP Hp2Lp: -----------------------</= 0.15 UI PP 8.5. Input jitter measurement: With the distant end loop at 2, 34, 140, 155 measure the Input Jitter tolerance with the help of PDH/ SDH Analyser. Frequency Measured value Limit For 2.048Mb/s: f1 20 Hz ------------- >/= 1.5 UI PP f2 93 Hz ------------- >/= 1.5 UI PP f3 3700 Hz ------------- >/= 0.2 UI PP f4 100 Khz ------------- >/= 0.2 UI PP For 34.368Mb/s: f1 100 Hz ------------- >/= 1.5 UI PP f2 1.0 Khz ------------- >/= 1.5 UI PP f3 10 Khz ------------- >/= 0.2 UI PP f4 800 Khz ------------- >/= 0.2 UI PP For 139.264Mb/s: f1 200 Hz ------------- >/= 1.5 UI PP f2 500 Hz ------------- >/= 1.5 UI PP f3 10 Khz ------------- >/= 0.2 UI PP f4 800 Khz ------------- >/= 0.2 UI PP


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For 155.520Mb/s: f1 500 Hz ------------- >/= 1.5 UI PP f2 6.5 Khz ------------- >/= 1.5 UI PP f3 65 Khz ------------- >/= 0.2 UI PP f4 1300 Khz ------------- >/= 0.2 UI PP 8.6. Check the remote supervisory by remote login facility: Remote Access of Tejas MC-1/4/LT/CP (with the help of Router ID): *) Configure your laptop/PC Default Gateway as your local MC-1/4/LT IP address. *) Using Router ID address, Open Internet Explorer and log-in Remote Tejas TJ100MC-1/4/LT. (http://192.168.254.2:20080) For Example: You are at Node A (192.168.1.254) and would like to login Node B (192.168.254.2) *) You have to configure IP Address, Subnet Mask & Default Gateway of your laptop/PC at Local Node A(192.168.1.254) as follows: IP Address…………… : 192.168.1.200 SubnetMask………….: 255.255.255.0 Default Gateway…….. : 192.168.1.254 *) User Name: tejas and Password: j72e#05t In the command prompt of Windows PC, give the following command: route add 192.168.254.0 mask 255.255.255.0 192.168.1.254 (and then press enter key). Now you will be able to ping the remote node with it’s Router ID. If you are able to ping, then by giving the http://RouterID:20080 in the Internet explorer, you will be able to see the Remote node UI page, after giving the User name & Password. When you take the Windows Laptop/ PC to remote Node say Node-D, then connect the Laptop/ PC to Node-D NMS Port and then: *) You have to configure IP Address, Subnet Mask & Default Gateway of your laptop/PC at Local Node D(192.168.4.254) as follows: IP Address…………… : 192.168.4.200 SubnetMask………….: 255.255.255.0 Default Gateway……..: 192.168.4.254 In the command prompt of Windows PC, give the following command: route add 192.168.254.0 mask 255.255.255.0 192.168.4.254 (and then press enter key). With this command, you will be able to Log-in any Node through it’s Router-ID. 192.168.1.254


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8.7 Check the loop back facility in SDH/ PDH level: Maintenance operation STM1/PDH Loop back Normal/ facility loop back/ terminal loop back. Normal for normal working condition, Facility Loop back for STM port local loop back, Terminal loop back for PDH local loop back. 8.8 Check of Order wire: Check the working of order wire by selective calling each station for ring and speech and repeat the same for group calling. For Setting the Order Wire, please follow the below procedure (Not applicable for TJ100CP). Provisioning Order wire View Order wire Segment(s) Create order wire segment Give any two digit Segment no. (ex.12) Segment No: 12 Carrier Byte: E1 Port1 Select the STM Optical Aggr. Port 1 EOW admin status for port1: Enable Port2 Select the STM Optical Aggr. Port 2 EOW admin status for port2: Enable and then Press Submit. Now Set the Order Wire No. as follows: Provisioning Order wire Order Wire No: Any Three Digit no. (ex. 123) Ring Timeout: 60 sec Matching Impedance: 600 Ohms 2.16 u F and press Submit. Pl. Note: The Segment No. for all the Nodes connected through the Optical Fibers should be same (i.e. two digit no.) For Selective Calling: # Segment No. Order wire no. ( ex. #12123) For Omni-Bus Calling: # Segment No. 251. ( ex. #12251) Check for synchronization: *) Click on Timing Manager (main menu) - Nominate Clock -- *) Clock Reference: Port *) Clock Reference Port: STM1-3-1 *) Priority: 1 Submit the changes and do the same steps, If you want to nominate more than one Clock source.


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8.9 Check of Protection switching: APS Automatic protection switching. With the distant end loop at 2, 34, 140, 155 measure the Bit error ratio and remove any one of the optical receive aggregate, the traffic will switchover to the spare aggregate in protection mode. Error occurs in PDH DTA/ SDH Analyzer indicates the traffic change over. In revertive mode of selection the stream will restore to its normal working path from protection mode, when the receive optical path becomes normal. But in non- revertive mode, system will sustain in the last working route. 9.0 STABILITY TEST: Connect the system for long-term stability test for 48 hours at the lowest bit rate 2Mb/s. and record the error performance. LIMIT: % ES 0.018 % DM 0.023 % SES 0.0023 Limit for ES is to be normalized at 64 Kb/s. 10. ABBREVIATION: AIS – Alarm Indication Signal ALS – Auto Laser Shutoff BER – Bit Error Rate CPE – Customer premises Equipment EOW – Engineering Order Wire IP – Internet Protocol NMS – Network Management System PDH – Plesiochronous Digital Hierarchy RX – Receive SDH – Synchronous Digital Hierarchy TX – Trans BIBLIOGRAPHY: TJ100CP, TJ100MC-1, Installation Procedures, Hardware description manual.


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stm 1 configuration

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