363-206-204
Release 6 Installation Tests
Issue 9 October 1998
5-13
NOTE
:
Timing selection is a switch option setting on the BBF2/BBF2B (TGS) cir-
cuit pack.
3. If the shelf is optioned for external, make sure it is connected to an external
clock through J37 on the shelf backplane; the line code and the frame
selection must be set for the attributes of the clock.
NOTE
:
In the absence of engineering records, set the line code for AMI and the
frame selection for superframe.
4. If the timing mode selection on any TGS circuit pack is changed, press the
UPD/INIT pushbutton on the SYSCTL.
5. For end-to-end service communications must be enabled. Verify far-end
communications are enabled using the rtrv-fecom command. If com-
munications are disabled issue the command set-fecom and set the
address=dcc-all and communications=enabled to enable far-end
communications.
NOTE
:
An inconsistent DCC switch settings alarm will be present while the OLIUs
are optically looped back on themselves.
6. Enter the appropriate cross-connects at each shelf to fit individual applica-
tions using the commands as described in the 363-206-202,
DDM-2000
OC-3 Multiplexer User/Service Manual.
7. Verify that each shelf in the network has a unique Site NE (Site-Network
Element) address. OSI interworking will not operate with duplicate
addresses.
8. One shelf (and only one shelf) in the network must be set as the Gateway
Network Element (GNE). Using the set-ne command, set one shelf to be
the GNE.
Fiber Verification Procedure and Optical Test
The following procedure verifies that the optical fiber cable are properly
connected.
!
WARNING:
Unterminated optical connector may emit laser radiation. Do not view
beam with optical instruments. Avoid direct exposure to beam.
NOTE
:
The procedure requires personnel at both ends of the DDM-2000 OC-3
point-to-point system or hubbing application.
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