Avaya MCC1 Maintenance Procedures page 210

Troubleshooting
Troubleshooting ISDN-PRI endpoints (wideband)
This troubleshooting procedure is limited to diagnosing faults between the switch and either the ISDN-
PRI's:
• Line-side terminal adapter
• Endpoint equipment
Problems encountered on the network side of a wideband connection or problems with end-to-end
equipment compatibility are beyond the scope of this section.
START
Are there alarms or errors against any of
the following maintenance objects (MOs):
UDS1-BD, PKT-INT, SYS-LINK, ISDN-
LNK, ISDN-SGR, PE-BCHL
↓ NO
Check the status of the endpoint
equipment or terminal adaptor. (Do this at
the endpoint, not at the G3-MT.) ↓
Does the adaptor or endpoint indicate
problems?
↓ NO
Check administration at the endpoint and
on the switch (for example, port boundary
width). Are they inconsistent?
↓ NO
Does every call fail, or are the failures
transient?
↓ Transient Failures
Use list measurements ds1 to check for
bit errors over the DS1 interface between
the switch and the terminal adapter or
endpoint equipment.
↓ No bit errors
Check for alarms and errors against
SYNC. Has a synchronization source
been unstable, or has the system switched
synch sources?
↓ NO
Follow normal escalation procedures.
S8100
On the S8100, Figure 60, Processing of PRI endpoint problems (page 1 of 2),
Processing of PRI endpoint problems (page 1 of 2),
problems.
210
YES Resolve those alarms or errors in the order listed
at left by following procedures for the
→
appropriate MO in Maintenance Alarms
Reference (555-245-102).
YES Follow repair procedures recommended by the
→
provider of the terminal adapter or endpoint
equipment.
YES Correct the administration so that both ends
→
match.
Always Check the health of the application equipment
Fails (for example, the video codec) and that of the
→
S8700 Media Server network. If constant
failures persist, follow normal escalation
procedures.
Bit Perform an in-depth analysis of the DS1
Errors interface including premises distribution wiring,
→
endpoint equipment, and any other possible
source of noise. If the problem cannot be
isolated, follow normal escalation procedures.
YES Follow procedures described in SYNC in
→
Maintenance Alarms Reference (555-245-102).
on page 212 show the processing of PRI endpoint
on page 211 and Figure 61,
Maintenance Procedures
December 2003