Removing A Timing Cable Adapter Ntpn81 - Nortel Passport 15000 Hardware Installation And Maintenance

742 Chapter 17 Hardware procedures

Removing a timing cable adapter NTPN81

Prerequisites
Procedure steps
241-1501-240 5.2S2
Remove a timing cable adapter NTPN81 to replace it.
• You must be familiar with "Safety considerations and best practices"
(page 53).
1 Locate the adapter to be removed at the rear of the Passport 20000.
2 Inform the software network operator that disconnecting the timing cable
will generate software alarms for loss of primary timing signal and a
switchover to the secondary (if configured and available), or a loss of the
secondary as a backup timing reference. This is normal during a
replacement. For information about BITS alarms, refer to 241-5701-500
Passport 6400, 7400, 15000, 20000 Alarms .
3 At the adapter, unplug the coax connector and let the cable hang freely
without allowing the end to contact other metal. It is still signaling.