Cutover Procedures For Out-Of-Service Equipment - Symmetricom TimeSource 3100 User Manual

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Cutover Procedures for Out-of-Service Equipment

If DDF access jack sets are not cabled to the ESCIU module, the following out-of-service
cutover procedure must be used. Consult the local company Installation Job Specifications
to ensure that the network element to be re-timed is connected to the ESCIU module
correctly. Refer to Figure 22 for the following procedure:
1. Remove from service (turn down) the traffic trunks on the E1 system to be cutover to the
ESCIU module.
2. Remove the existing cabling in both directions between the transmit (OUT) and receive
(IN) terminals of the NEs that will connect to the ESCIU module.
3. In the direction not to be synchronized by the ESCIU module, connect new cables from
the ESCIU module RTNx IN connector to the NE transmit (OUT) terminal, and connect
from the ESCIU module RTNx OUT connector to the NE receive (IN) terminal.
4. In the direction to be synchronized by the ESCIU module, connect new cables from the
ESCIU module IN connector to the NE transmit (OUT) terminal, and connect from the
ESCIU module OUT connector to the NE receive (IN) terminal.
5. Verify that there are no alarms on the NEs on the E1 system. If there are alarms, recheck
the new cabling between the NEs and the ESCIU module.
6. Restore (turn up) the traffic trunks to service.
TimeSource 3100
Installation
097-72020-01 Issue 9: November 2003
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