Demand test descriptions and error codes - Avaya Support

facility vendor’s DS1 facility is attached. If the NI does not occur at this point, then any
cabling between the CSU terminals and the NI is also considered to be part of the
CPE. This cable typically runs between the DS1 facility terminals of the CSU and a
cross-connect field where the DS1 facility vendor has terminated the DS1 facility.
Maintenance responsibility for this portion of the DS1 facility resides with the customer
unless other arrangements are made.
3. If the CPE side LOS indication on CSU B is on (active), check for a problem between
the CPE side of CSU B and the DS1 converter B circuit pack. Connectors, cables, and
the CSU B may need to be replaced.
4. If the CSU A and the CSU B do not provide visual CPE side and DS1 facility side LOS
indications, follow the repair procedure that is given for Error Type1025 (loss of frame
alignment). Apply the procedure first to the DS1 converter B side instead of the DS1
converter A where the error is reported (external loopback test is not expected to pass
if we execute it at this end as long as we have the LOS indication).
Repair procedure for Error Type #1025 (loss of frame alignment) includes execution of
the Near-End External Loopback Test (#799). If this is not a critical-reliability system
and if there is only one DS1 facility, then Test #799 can only be executed at the end
that is closer to the server relative to the DS1 converter circuit pack at the end of the
DS1 converter complex. If the test cot be executed for that reason, then still make the
external loopback as if the test was going to be executed, but instead of executing the
test, check the green LED at the face plate of the DS1 converter B that is associated
with this DS1 facility. If the green LED is off, then replace the connectors, cables, and
the CSU B.
5. If the problem still persists, replace the DS1 converter circuit pack at the other end of
the DS1 converter complex.
6. If the problem still persists, replace this DS1 converter circuit pack.
If D4 framing is used, an in-band alarm signal (RFA) is transmitted that corrupts transmit
data in response to this alarm.
k. Error Type 2065: More than 17 misframe errors occurred. This error will clear when there
are no misframes for 1 hour.
1. Enter display errors and follow the associated repair procedures for any SYNC
(Port Network Synchronization), TDM-CLK (TDM Bus Clock), or SNC-BD (Switch
Node Clock Circuit Pack) errors.
2. Verify that the DS1 facility and the network are using the same Line Coding. For
TN574 boards and TN1654 boards in T1 mode, also verify that the Framing Mode
used is the same. Use list fiber-link and display fiber-link to check the
values for this DS1 facility. Contact T1 Network Service to check the modes used by
the network. See Line Coding and Framing Mode for details on how these options
apply to the TN574 and TN1654 DS1 converter boards.
3. For TN574 boards and TN1654 boards in T1 mode, check line equalization settings as
described in DS1 Converter-1 and DS1 Converter-2 Line Compensation.
368 Maintenance Alarms for Communication Manager, Media Gateways and Servers