363-206-204
Release 13 (TARP) Installation Tests
Issue 9 October 1998 9-11
Procedure for DS3 Testing
1. Beginning with address ‘a’, place a physical DS3 loopback at ONLY this
address at the DSX-3 panel. If more than one loopback is present incorrect
wiring may not be apparent. If DS3 cabling connects directly to DACS IV
2000 have Craft personnel put up an internal loopback or connect the DS3
‘in’ cable to the DS3 ‘out’ cable using a BNC to BNC connector.
2. The following command and parameters test the DS3 channel’s cabling for
60 seconds.
Issue the command:
test-trmsn-t3:a
direction (mux)=demux
duration (1)=<return>
3. If transmission is not error-free, correct the problem by checking circuit
packs and associated cabling.
4. Move the physical DS3 loopback to the next DS3 channel at the DSX-3
panel or place a loopback at the terminating equipment. Press UPD to
clear the alarm caused by removing the loopback plug. Verify that no
alarms exist and continue testing the next channel.
Procedure for EC-1 Testing
1. Beginning with address ‘a’, place a physical DS3(EC-1) loopback at ONLY
this address at the DSX-3 panel. If more than one loopback is present
incorrect wiring may not be apparent. If DS3/EC-1 cabling connects directly
to DACS IV 2000 have Craft personnel put up an internal loopback or con-
nect the DS3 ‘in’ cable to the DS3 ‘out’ cable using a BNC to BNC connec-
tor.
2. Remove the DS3(EC-1) loopback.
3. Issue the
rtrv-alm
command and observe that an ‘Inc. EC-1 LOS’ alarm
exists for this address.
4. Replace the DS3(EC-1) loopback.
5. Issue the
rtrv-alm
command and observe that the ‘Inc. EC-1 LOS’ no
longer exists. If the alarm exists, correct the problem by checking circuit
packs and associated cabling. An ‘Inc. STS AIS’ will occur if VT cross-
connects exist.
6. The physical DS3(EC-1) loopback can remain until service is applied. Ver-
ify that no ‘Inc. EC-1 LOS’ alarms exist and continue testing the next chan-
nel.
Summary of Contents for DDM-2000 OC-3
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Page 144: ...2 70 Issue 9 October 1998 363 206 204 Equipment and Rear Access Cable Installation ...
Page 192: ...3 46 Issue 9 October 1998 363 206 204 Equipment and Front Access Cable Installation ...
Page 304: ...6 30 Issue 9 October 1998 363 206 204 Release 7 Installation Tests ...
Page 330: ...7 24 Issue 9 October 1998 363 206 204 Release 8 Installation Tests ...
Page 398: ...9 32 Issue 9 October 1998 363 206 204 Release 13 TARP Installation Tests ...
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Page 492: ...IN 14 Issue 9 October 1998 ...