NTP-026
: Circuit Order 363-206-305
Page 2 of 4 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
DO ITEMS BELOW IN ORDER LISTED. . . . .FOR DETAILS, GO TO
4. If a craft interface terminal (CIT) is available, use the
rtrv-state-eqpt: command to verify that the right port has
been changed from
in-service(i)
to
auto(a)
state at the terminating
nodes.
5. From the work order of rtrv-crs-sts1: command, determine
the cross-connections for the circuit being discontinued. Use the
rtrv-crs-sts1: command at each node in the ring network to
obtain the STS-1 Cross Connect Report.
6.
!
CAUTION:
Removal of the wrong cross-connect may interrupt service.
NOTE:
DS3 slots cannot be unequipped without an alarm until all
cross-connections are removed. The cross-connections
must be removed first before removing circuit packs. In ring
configurations, remove the cross-connections from the
terminating (drop) nodes first, then remove the pass-through
cross-connections at the non-terminating nodes, if required.
A critical alarm may occur when the first cross-connection at
the terminating node is deleted and clear when the other
terminating cross-connection is deleted.
NOTE:
In ring configurations, you should use the following rules in
establishing cross-connections in each ring:
1. All 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. However, if you
anticipate dropping VT1.5s from the pass-through
node in the future, you should provision the
pass-throughs as VT1.5 cross-connections.
3. On STS-1 path-switched rings, all nodes in the ring
must be provisioned as STS-1 cross-connections.
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