363-206-285 Detailed Level Procedure: DLP-557
Issue 2, February 2000 Page 5 of 22
DDM-2000 OC-3 MULTIPLEXER
2. Verify system configuration is same as specified on work order or circuit order.
For example, see Figures 5 through 18.
3.
NOTE:
Cross-connections consist of drop and pass-through connections. For
example in Figures 5 and 6, drop connections are made at Nodes 1, 4, 5,
and the FiberReach node. Pass-through cross-connections are made at
Nodes 2, 3, and 6. Also, cross-connections must be made in all
interconnected rings, including other DDM-2000 OC-3 rings, DDM-2000
OC-12 rings, and FT-2000 OC-48 rings, as required.
From work order or circuit order, determine the terminating (drop) nodes for
the service being established.
4. From work order, circuit order, and the sketch made in Step 1, determine the
pass-through nodes for the service being established.
5. From work order or circuit order, determine the host OC-3 and OC-12 node(s)
that connects to the OC-1 FiberReach ring(s).
6.
NOTE:
The cct parameter of the ent-crs-vt1: command specifies the
cross-connect type. The valid values are two-way, dc,andlocked.
Two-way applies to add/drop, hairpin, 0X1 ring, and pass-through
connections. The dc parameter applies to dual ring interconnection (DRI)
applications. The locked parameter supports non-path-switched DS1
applications where a DS1 is cross-connected to a specified channel in a
specified direction of the ring interface (Figures 14 and 17). Provisioned
AIS or unequipped signal is transmitted in the other direction around the
ring, but is not alarmed at any pass-through nodes or the other
terminating node with locked cross-connections present for the same
channel. Any signal received in the same channel from the other ring
interface is ignored.
Determine the cross-connect type (cct)tobemadeateachnodeforthe
service being established.
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