Avaya Definity SI Maintenance Manual page 1585

EXP-INTF (Expansion Interface Circuit Pack)
Expansion Interface Reset Test (#336)
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.
555-233-123 Issue 4 May 2002 10-799