User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-690EXP-INTF (Expansion Interface Circuit Pack)
10
This test is potentially very destructive and requires the Expansion Interface
circuit pack to be busied out prior to execution of this test.
The Expansion Interface Reset Test, which is not a part of either the Short or the
Long Test Sequences, is executed via the reset board PCSS command where
PCSS is the address of the Expansion Interface circuit pack to be reset.
If the system only has one working Expansion Interface Link between a pair of
port networks and one of the Expansion Interface circuit packs must be reset, the
action of busying out the desired Expansion Interface circuit pack WILL
DISRUPT SERVICE TO THE EPN until the Expansion Interface circuit pack is
released from the busyout state. If the Expansion Interface circuit pack is part of
a PPN to EPN link, the EPN WILL BE WITHOUT SERVICE. If the Expansion
Interface circuit pack is part of an EPN to EPN link CALLS BETWEEN THE TWO
EPNs WILL BE DENIED.
If the system has working duplicate Expansion Interface Links, and the
Expansion Interface circuit pack to be reset is part of the Active Expansion
Interface Link, the system does not allow the busyout and instructs system
technician to switch Expansion Interface Links via the set expansion-link PCSS
command where PCSS is the address of either Standby Expansion Interface
circuit pack on the Standby link. After executing the Expansion Interface Link
switch, it is possible to busyout and then reset the original Expansion Interface
circuit pack.
However, if the EPN Maintenance (MAINT) circuit pack determines that the
Expansion Interface (EXP-INTF) circuit pack is cycling between sane and insane
several times within several minutes, MAINT may inhibit operation of the
EXP-INTF by holding the Expansion Interface circuit pack in a reset state. This
condition may result in an unsuccessful reset of the Expansion Interface circuit
pack.
If the reset command returns with "EPN is unavailable," execute the following
steps:
1. Use the change circuit-pack P command where P is the port network
number of the EPN.
2. For the Expansion Interface circuit pack you wish to reset, add an entry to
the Circuit Pack form for the TN776 or TN570 Expansion Interface circuit
pack. Be sure to enter the appropriate carrier and slot (that is, A01 or
B02).
3. Enter the form.
4. Repeat the reset board command.