Lucent DDM-2000 OC-3 User And Service Manual page 125

363-206-285
Issue 2, February 2000
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8. Make the appropriate connection(s) to the DS1 cross-connect
point(s) or equivalent connection point(s) for the circuit(s) being
added.
9. Verify that no LEDs or alarms are activated. If any LEDs or alarms
are activated, refer to Trouble Clearing: IXL-001.
10.
NOTE:
Ring releases support only manual VT1.5 and STS-1
cross-connections. Manual STS-1 and/or DS1
cross-connections have to be made at each shelf to
configure the transmission path for each DS3/DS1 circuit
being established. Either terminating (drop)
cross-connections or "drop and continue" cross-connections
are made at terminating nodes and pass-through
cross-connections are made at intermediate nodes.
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. Also,
provisioning now as a VT1.5 cross-connect will avoid a
hit on traffic if the STS-1 cross-connect has to be
converted to 28 VT1.5 cross-connects to drop DS1s at
a later time.
3. On STS-1 path-switched rings, all nodes in the ring
must be provisioned as STS-1 cross-connections.
DDM-2000 OC-3 M
Circuit Order:
ULTIPLEXER
NTP-008
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