This is the MCQs in Analog Transmission from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan. More: http://www.pinoybix.org/
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Descripción: apc 200
Introduction
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apc 200
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Transmission
Prepared by : Khalil Ali Qasem
Connectivity Type • There are three types of connectivity: 1.RNC DDF – CWO (SDH) – CWO(SDH) - Node B 2.RNC DDF – MW A– MW B - Node B 3.RNC DDF – CWO (SDH) – CWO(SDH) -MW A– MW B - Node B
• Three level of CWO: 1. E1 - E1. 2. STM – E1. 3. STM – STM.
Near End
Far E
• E1 – E1 The Following test must be: Near End
Far End
1. Huawei will send KLM to ADM. 2. ADM team will do soft loop with RNC. 3. Field Engineer do Test Loop from ADM DDF location and confirm with RNC. 4. Filed Engineer to connect cable from SDH DDF to ADM DDF. 5. Filed Engineer to do Loop test from all CWO points in near end and confirm with RNC.
1. . Filed Engineer to do Loop test from CWO points in Far end and confirm with RNC. 2. Connect Cable from SDH DDF to MW DDF block.
Format to fill Near End Site ID NI
ADM Cross connecting (Y/N)
Get ADM E1 DDF location (Y/N)
Loop test from ADM DDF to RNC (Y/N)
ADM DDF – SDH DDF cable (Y/N)
Loop test from tie cable points (Y/N)
Far End Loop test from SDH DDF to RNC (Y/N)
Connect cable BW SDH DDF to MW (Y/N)
If troubleshooting required you must specify from exchange and from which point can not receive loop.
• STM – E1
• STM – E1 The Following test must be: Near End
Far End
1. Field Engineer to connect fiber from RNC ODF to SDH ODF. 2. Filed Engineer to only check if all cable in Tie cables in SDH ODF already connecting.
1. . Filed Engineer to do Loop test from CWO points in Far end and confirm with RNC. 2. Connect Cable from SDH DDF to MW DDF block.
Format to fill Near End Site ID NI
RNC ODF – SDH ODF cable (Y/N)
Physical check for all tie cable points already connect (Y/N)
Far End Loop test from SDH DDF to RNC (Y/N)
Connect cable BW SDH DDF to MW (Y/N)
If troubleshooting required you must specify from exchange and from which point can not receive loop.
STM -STM
• STM – STM The Following test must be: Near End
Far End
1. Field Engineer to connect fiber from RNC ODF to SDH ODF. 2. Filed Engineer to only check if all cable in Tie cables in SDH ODF already connecting.
1. Field Engineer to connect fiber from RNC ODF to SDH ODF. 2. Filed Engineer to only check if all cable in Tie cables in SDH ODF already connecting. 3. Inform Huawei Engineer to escalate to STC / PID to get E1 drop point . (If MW is Traffic Node *usually in Dammam and Hafouf in eastern region *the E1 drop will be in site directly).
Format to fill Near End Site ID NI
RNC ODF – SDH ODF cable (Y/N)
Physical check for all tie cable points already connect (Y/N)
Far End Physical check for all tie cable points already connect (Y/N)
Get E1 DDF ( Y / N )
Loop test to Connect cable BW RNC when get SDH DDF to MW E1 DDF ( Y / N ) ( Y / N )
IF MW in Eastern Area( DAMMAM & Hafouf ) E1 drop by STC PID will be in site directly. If troubleshooting required you must specify from exchange and from which point can not receive loop.
Connectivity Type • There are three types of connectivity: 1.BSC DDF – CWO (SDH) – CWO(SDH) - BTS 2.BSC DDF – MW A– MW B - BTS 3.BSC DDF – CWO (SDH) – CWO(SDH) -MW A– MW B - BTS
Tools 1. 2. 3. 4. 5. 6.
Puncher. Loopback. Cutter. Tie cable. Tape. Label machine.
Digital Microwave • There are different type of Microwave Equipment: • • • • • • • •
Huawei NEC Ericsson (Mini-Link ) Siemens Harris Lucent( P-com) Nokia (Flexi hopper) Nera
ERICSSON Tributary Cables
• Ericsson (Mini-link):
ERICSSON MW There are different capacity (4-8-16-32) E1 - Use Link-Manager Software. Connect to O&M port in MMU
ERICSSON
1111
ERICSSON • Change the communication port.
As your Computer port
ERICSSON Local Unit
• Choose Scan Local in Network
Remote unit
• Double click in first link (Local)
ERICSSON Local unit must be highlight
ERICSSON • If there is mark that is mean used if not it is free. •To activate, Mark the free one and save
Active
Free
ERICSSON • Physical connection: -Trace the Tributary cable from MMU unit( direction to your object site), then check by led if there is E1 free ( If led give light in Tx and Rx that mean used but if only give one light Tx and no light from Rx that is free. -Connect your cable as cross connection Tx from your cable to Rx from MW Rx from your cable to Tx from MW
ERICSSON BLOCK E1 -1
E1 -2
E1 -3
E1 -4
ERICSSON TN • Traffic node must be defended by STC and must be Label
TN
HARRIS MW • Harris Mw need to connect to CIT port and using Hyper terminal Tributary Cable
HARRIS • Scroll down by arrow and choose Configuration then press enter the screen no. 2 appear then choose IDU and press enter to go back press F4
F1
(1)
F2
F3
(2)
F4
HARRIS • Scroll down by arrow and choose Tributary then press enter the screen no. 2 appear then choose which E1 is free ( you can check physically first) and press enter to go back click F4
F1
F2
F3
F4
F1
F2
F3
F4
HARRIS •To activate E1 press F2 and F3 till you see the value change from Disable to Enable in actual and new value then press F4 till you reach the first screen after that you can exit hyper terminal. Not ready to use Activated and ready to use
F1
F2
F3
F4
F1
F2
F3
F4
HARRIS • Physical connection: -Trace the Tributary cable from MW unit( direction to your object site), then check by led if there is E1 free ( If led give light in Tx and Rx that mean used but if only give one light Tx and no light from Rx that is free. -Connect your cable as cross connection Tx from your cable to Rx from MW Rx from your cable to Tx from MW
HARRIS BLOCK E1 -1
E1 -2
E1 -3
E1 -4
P-COM • P-Com MW need to connect to Computer port and use Link Manger SW. Tributary cable
P-COM
P-COM •Change the port setting
P-COM
P-COM •To activate E1 mark in enable column then save
Active and ready to use
P-COM • Physical connection: -Trace the Tributary cable from MW unit( direction to your object site), then check by led if there is E1 free ( If led give light in Tx and Rx that mean used but if only give one light Tx and no light from Rx that is free. -Connect your cable as cross connection Tx from your cable to Rx from MW Rx from your cable to Tx from MW
P-COM BLOCK Always P-com is 4 E1 only , You have to trace cable from MW and check the connection point from back
E1 E1 E1
SIEMENS • Siemens DDF Ex: Floor/Cabinet lable/Panel.block/Row/E1 G/102.04/04.01/10/1-6 Row • Each Row contain only 2 E1( 1-6 and 7-12) 1