Avaya 03-300430 User Manual

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Packet Bus maintenance

A Packet Interface physically interacts with the PKT-BUS. It may be difficult to isolate faults 
to one or the other component for certain types of Packet Interface errors. In each of these 
cases, Packet Interface maintenance forwards an error report to packet-bus maintenance, 
where it records a packet-bus fault in the hardware error log and runs Packet Bus tests.

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Packet Interface maintenance

The operation of the IPSI circuit pack’s Packet Interface module affects the operation and 
maintenance of other circuit packs connected to the packet bus. This includes:

1. BRI applications (BRI-PT)

2. Universal DS1 applications (UDS1) for ISDN/PRI applications

3.

: Expansion Interface circuit pack maintenance (EXP-INTF)

Some packet errors require examination of the Packet Interface’s operating status. To 
obtain this information:

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Examine the Error and Alarm Logs for PKT-INT entries and determine which PKT-INT the 
link is accessing.

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Use status sys-link to identify the PKT-INT location in this PN, or use status 
sys-link to find the PKT-INT hardware used by the faulted link.

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Use test sys-link to troubleshoot the component.

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Use status packet-interface to determine the:

- service state of the Packet Interface, for example, in service/out of service

- total number of Packet Interface links assigned to a Packet Interface.

For a standby IPSI’s Packet Interface module in a high- or critical-reliability system 
(duplicated IPSIs), the module is shown in standby mode if it is not out-of-service 
because of a failure condition. The number of links for a standby Packet Interface module 
is always zero.

In general, if every link for an active IPSI’s Packet Interface module is shown as a Failed 
Link, there may be a fault on either the Packet Interface module or the packet bus that 
caused every link to go down. If only a small percentage of the links are shown as Failed 
Links, then the Packet Interface is probably not the source of the problem. Some typical 
sources of individual link failures include:

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failed BRI telephone set

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disconnected cord to a BRI set, causes three link failures

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: failed or removed EI circuit pack in a PN, causes one link failure