Avaya MCC1 Maintenance Procedures page 213

Figure 62: ISDN-BRI/packet-bus connectivity
The flowchart in
the steps needed to isolate and resolve an ISDN-BRI problem. The order of examining maintenance
objects (MOs) can be determined by assessing how wide-spread the failure is. For example, since every
ISDN-BRI device in the PN or IPSI-connected PN communicates with the TN2312AP IPSI circuit pack's
Packet Interface circuit, its MO should be examined early in the sequence. On the other hand, a failure of
a PN's TN570 EI circuit pack may cause an ISDN-BRI failure in one PN, but not in another.
NOTE:
If the flowchart query "Is the problem affecting MOs on multiple BRI-BD circuit packs?"
is reached and the PN in question has only one ISDN-BRI circuit pack, then assume that
the answer is "Yes," and follow the repair procedure for PKT-BUS.
When directed by the flowchart to refer to the maintenance documentation for a specific MO, keep in
mind that the repair procedure for that MO may refer you to another MO's repair procedure. The
flowchart tries to coordinate these activities so that a logical flow is maintained if the ISDN-BRI
problems are not resolved with the first set of repair procedures.
These following status commands may also be useful when diagnosing ISDN-BRI problems:
• status port-network
• status packet-interface
• status bri-port
• status station
• status data-module
Maintenance Procedures
December 2003
PPN
T T
Duplicated
N
N
PNC
1
7
6
Only
7
5
Testing/
5
1
Reconfig
Packet Bus
T T
N
N
Signaling
1
5
Links
6
5
5
5
6
BRI-PT ABRI-PT
ASAI-ADJ
Figure 63, Troubleshooting ISDN-BRI problems (Page 1 of 2),
T T
N N
5 5
7 7
0 0
Signaling Links
T T
N N
5 5
7 7
0 0
Troubleshooting
Troubleshooting ISDN-BRI / ASAI
EPN
T
Duplicated
N
PNC
7
Only
7
Testing/
1
Reconfig
Packet Bus
Signaling
T
Links
N
5
5
6
BRI-PT ABRI-PT
ASAI-ADJ
on page 214 describes
213