Troubleshooting Isdn-Bri / Asai - Avaya S8700 Maintenance Manual

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Troubleshooting ISDN-BRI / ASAI

Troubleshooting ISDN-BRI/ASAI problems can be a complex and involved

procedure. The reason for this is that ISDN-BRI devices communicate with the

server over the packet bus, as opposed to the TDM bus. Therefore, it is possible

for another component's fault (related to the packet bus) to cause problems with

ISDN-BRI devices.

applies to ISDN-BRI signaling.

Figure 4-40. ISDN-BRI/Packet-Bus Connectivity

The flowchart in

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 scope of an IPSI-connected EPN

communicates with the TN2312 IPSI circuit pack's Packet Interface circuit, its MO

should be examined early in the sequence. On the other hand, a failure of an

EPN's TN570 EI circuit pack may cause an ISDN-BRI failure in one EPN, but not

shows the connectivity of the packet bus as it

Signaling Links

Figure 4-41 on page 4-75

describes the steps needed to isolate

Issue 1 May 2002