Avaya S8700 Maintenance Manual page 1499

For multi-connect configurations

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EXP-INTF (Expansion Interface Circuit Pack)

a. When the suspect Tone-Clock circuit pack resides in an in-service

b. When the suspect Tone-Clock resides in an out-of-service PN:

Replacing an EI Circuit Pack—Unduplicated PNC

Do not power down a Switch Node carrier to replace a circuit pack.

Replacing a Switch Node Interface, Switch Node Clock, Expansion

Interface, or DS1 Converter circuit pack in a standard-, duplex-, or

high-reliability system disrupts service. This service effect can range from

an outage of a single PN to an outage of the entire system.

pot network (PN) with duplicated Tone-Clock circuit packs:

Switch to the standby Tone-Clock in this PN. If the suspect

Tone-Clock is defective, the link(s) should be restored at this point.

(Switching back to the defective Tone-Clock should take the same

link(s) out of service.) This Tone-Clock is defective and should be

replaced as soon as possible. If switching Tone-Clocks does not

bring up the PN, then this Tone-Clock is not the source of the

problem. Be sure to switch back to the original Tone-Clock.

If a defective Tone-Clock circuit pack is left as the standby

Tone-Clock, then a scheduled Tone-Clock switch will cause the

same link(s) go out of service again.

Replace the active Tone-Clock circuit pack in this port network (PN).

In a PN with duplicated Tone-Clock circuit packs, the active

Tone-Clock's amber LED is flashing. If both amber LEDs are

flashing, the active Tone-Clock's LED is blinking slower.

If a defective Tone-Clock circuit pack is left as the standby

Tone-Clock, then a scheduled Tone-Clock switch will cause the

same PN to go out of service again.

If replacing this circuit pack restores the link(s), then the circuit pack

should be replaced as soon as possible. If not, then it was not the

source of the problem.

Issue 1 May 2002

Troubleshooting