6-10 Issue 9 October 1998
363-206-204
Release 7 Installation Tests
NOTE
:
If any of the OLIUs are of the universal type (ex: 22G-U) and other than
ST
®
type connectors are being used see Table 6-3 for the universal LBOs
needed and Table 6-4 for the lightguide jumpers.
4. During the loopback test the far-end communications must be disabled.
Issue the command
set-fecom
and set the
address=dcc-all
and
communications=disabled
(far-end communications).
5. After a few moments, check that no alarms are present (that is, no FAULT
LED lighted on any circuit packs). If alarms are present, press the UPD/
INIT pushbutton on the SYSCTL. If alarms do not clear, refer to the "Trou-
bleshooting" section of this manual.
6. To test each DS1 or DS3 channel through to the cross-connect panel or ter-
minating equipment, its cross-connect map has to be made at the DDM
OC-3 Shelf.
7. Enter DS1 or DS3/EC-1 cross-connects according to the OC-3 shelf config-
uration. Table 6-1 contains the cross-connect map required to test DS1
service on function groups A,B and C of this DDM-2000 OC-3 shelf.
8. Enter DS1 cross-connects as follows:
ent-crs-vt1:m-1-all,a-all:cct=twoway:y;
NOTE
:
The ‘all’ command can be used for a range of address’.
9. Enter DS3/EC-1 cross-connects as follows:
ent-crs-sts1:m-1,a:y;
10. Assure the appropriate cross-connect map is in place in the shelf by enter-
ing the command
rtrv-crs-vt1;
.
Procedure for DS1 Testing
1. Beginning with address ‘a-1-1’, place a physical DS1 loopback at ONLY this
address at the DSX-1 panel. If more than one loopback is present incorrect
wiring may not be apparent.
2. The following command and parameters test the DS1 channel’s cabling for
60 seconds.
Issue the command:
test-trmsn-t1:a-1-1
direction (mux)=demux
duration (1)=<return>
3. If transmission is not error-free, correct the problem by checking circuit
packs and associated cabling.
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 ...
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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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