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Lucent Technologies DDM-2000 OC-3 Installation Manual

Lucent Technologies DDM-2000 OC-3
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8-10
Issue 9 October 1998
363-206-204
Releases 9 and 11 Installation Tests
Preparation Procedure
1. The ’Free Running’ timing configuration is required for the DSX-1 test. The
timing parameters are set on the TGS pack. Refer to Section 4 of this man-
ual for option switch settings. Set timing to ‘Free Running’.
2. Fully insert the OLIUs into the shelf.
3. Connect the OLIU OUT to the OLIU IN of each OLIU, using optical fiber
jumper cables. Refer to Figure 8-1.
NOTE
:
The optical fiber cables required are listed under "Tools, Test Sets, and
Accessories".
NOTE
:
When looping a 22G-U (or 24G-U) OLIU back on itself a 10 dB LBO is
required. When looping a 27G-U OLIU back on itself two 15 dB LBOs are
required.
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 8-3 for the universal LBOs
needed and Table 8-4 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 8-1 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:

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Lucent Technologies DDM-2000 OC-3 Specifications

General IconGeneral
BrandLucent Technologies
ModelDDM-2000 OC-3
CategoryMultiplexer
LanguageEnglish

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