Demand test descriptions and error codes - Avaya Support

DS1-FAC (DS1 Facility)
4. Enter display errors and follow the associated repair procedures for any
EXP-INTF, and SNI-BD errors for the Fiber Endpoints. Enter display errors and
follow the associated repair procedures for any FIBER-LK errors for this fiber link.
5. If the problem still persists, replace this DS1 converter circuit pack.
6. If the problem still persists, replace the DS1 converter circuit pack at the other end of
the DS1 converter complex.
l. Error Type 2305: Facility Packet Chel Loopback Error. This error indicates that the DS1
converter primary facility that carries the packet time slots and DS1 control chel is looped to
itself. This error applies only to facilities A and B on TN1654 DS1 converter boards. If both
facilities A and B are being used and firmware detects a loopback condition an attempt will
be made to switch the primary facility to the other facility. If the other facility is looped, down
or not being used, the PN will be down until this loopback is removed.
1. Check the loopback LEDs on both CSU A and CSU B as shown in Figure 19: DS1
Facility Connections to see if a CSU is in a loopback mode. Also check to see if the
CSUs have been manually hard-wired into a loopback mode. Remove detected
loopbacks.
2. If the CSUs are not in loopback mode, reset both DS1 converter boards via reset
board.
m. Error Type 2561: Facility Jitter Alarm. This alarm indicates excessive receive jitter on the
DS1 facility. This error only applies to TN1654 DS1 converter boards. The problem is
external to the DS1 converter board. It could be caused by bad wiring, a bad device (CSU
or repeater) or a bad signal coming in at the Network Interface.
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