Avaya 03-300430 User Manual

Notes:

a. Error Type 0: Run the short test sequence first. If every test passes, run the long test 

sequence. Refer to each appropriate test’s description, and follow its recommended 
procedures.

b. Error Type 1: this switch sent a message to the far-end switch or terminal adapter, and the 

far end did not respond in the allotted time. Possible causes include link failure and 
congestion or outage at the far end. The Aux Data field contains layer-3 protocol information 
used by internal counters.

If no other symptoms are present, no action is required. If layer-3 communication is down, 
there should be indications in the screen of alarms and errors for link components. Check 
for other errors against ISDN-SGR, ISDN-TRK, and other hardware components on the link.

There is no test to clear these errors. The error counter is decremented by 1 every 15 
minutes.

c. Error Type 257: the primary signaling channel connection has been lost for more than 90 

seconds. If a secondary signaling channel does not exist or is not in service, the associated 
B channels will be placed in the ISDN Maintenance/Far-End state. The B channels will not 
be usable for outgoing calls, although incoming calls will still be accepted. The switch will 
automatically attempt to recover the signaling link. Pay particular attention to the results of 
Test #636 (Primary Signaling Link Hardware Check) in the test sequence. When the link 

769

Any

Primary Signaling 

Link Hardware 

Check (#636)

1025

Any

Secondary 

Signaling Link 

Hardware Check 

(#639)

1793 (

) Any

Layer 2 Status 

Test (#647)

WRN

OFF

2049 (

Any

Layer 2 Status 

Test (#647)

WRN

OFF

2305 (

) Any

Remote Layer 3 

Query (#637)

MIN

OFF

3585 (

Port 

number

None

3842 –

3942 (

Port 

number

None

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