363-206-285
Administration and Provisioning
8-44 Issue 3 June 2001
It is important that the pass-through signal is assigned the same channel address
for all nodes in the ring including the add/drop nodes m-1-2-3 in the example.
Do the following procedure:
1. Using the work order, identify the TIDs of the entry and exit points on the ring
(Nodes 1 and 5 in the example).
2. Determine if the work order is specifying use of a particular ring channel
(some work orders may abbreviate the m-1-2-3 designation as m123).If
the work order does not designate a VT1.5 ring channel to use, use the
rtrv-crs-vt1:all; to identify all unused ring channels. The output report
will show a dash in the Address 2 column for all unused channels. In the
example, we will cross-connect a DS1 from Node 1 through the ring and drop
the DS1 at Node 5 using m-1-2-3.
3. Log in or remote log in to all the TIDs that are not entry and exit points
(intermediate nodes) and enter ring "pass-through" cross-connections. At
each intermediate node of the network, use the ent-crs-vt1: command to
cross-connect the VT1.5 (DS1) channel time slots between main 1 and main
2. For example, to cross-connect the channel time slot associated with STS-
1#1inVTgroup2DS1port3,usetheent-crs-vt1:m-1-2-3,m-1-2-3)
command.
NOTE:
Only one command is required to establish the pass-through cross-
connection on both rings (main 1 to main 2 for Ring 1 and main 2 to
main 1 for Ring 2). Address 1 and address 2 must be the same.
4. Log in or remote log in to each drop node and enter the "drop" cross-
connection. At both drop nodes of the DS1 circuit being established, use the
ent-crs-vt1: command to cross-connect the VT1.5 (DS1) channel time
slot to the proper group, slot and port (for example, ent-crs-vt1:m-1-2-
3,a-2-3).
NOTE:
Only one command is required to establish the drop cross-connections
on both rings between main and fn-A. At exit nodes, assuming normal
operation, the same signal is present on both rings. The 22-type OLIU
monitors the input from each ring and selects one to drop to fn-A.
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