363-206-305 Detailed Level Procedure:
DLP-535
Issue 3, June 2000 Page 9 of 16
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
NOTE:
In ring configurations, you should use the following rules in establishing
cross-connections in each ring:
1. All terminating drop connections (including DRI, if present) from the
same STS-1 timeslot must be provisioned the same, either all
VT1.5 or STS-1.
2. If all 28 VT1.5s (DS1s) in an STS-1 are being passed through at a
node in a VT1.5 path-switched ring, then the cross-connection may
be provisioned as either a pass-through STS-1 or VT1.5.
3. On STS-1 path-switched rings, all nodes in the ring must be provi-
sioned as STS-1 cross-connections.
From work order or circuit order, determine the cross-connections [STS-1 or
VT1.5] to be made at each node [pass-through, terminating (drop), and host
OC-12 node(s)] associated with the kind of service being established.
8. Starting at one of the terminating nodes for the DS1/STS1 circuit being
established, use the rtrv-crs-( ): command at each node in the ring to
verify that the cross-connections specified on the work order or circuit order
may be made. For example, if the DS1 #1 low speed port in the DS1 circuit
pack in slot #2 of Low Speed Group B (LS-B-2) is to be connected to timeslot
m-1-2-1 and the rtrv-crs-vt1 command shows that the cross-connection
is already established, you should determine from office records if this port is
already in-service before continuing with this procedure.
If cross-connections are already assigned or improperly assigned, refer trouble
to the organization responsible for facility design. Improperly assigned
ross-connections may have to be deleted using the dlt-crs-( )
commands.
9.
NOTE:
Channel state provisioning provides IS, AUTO, and NMON states for
VT/STS1 channels similar to the port states for DS1 ports. When a
cross-connection is made to a point of termination the channel is in the
AUTO state and alarming is disabled. The channel must receive a good
signal from either ring to cause the channel to transition to in-service (IS).
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