Avaya 03-300430 User Manual

513

57364

Ground detector stuck active.  After several occurrences, an on-board minor 

alarm is generated.  Run the short test sequence.  If test aborts with Error 

Code 1000, disconnect Tip and Ring and repeat short test.  If test still aborts, 

replace circuit pack.  If test passes, refer problem to CO.  If any other error 

code is received, pursue that problem.

769

57392

CO not releasing after call is dropped from PBX end, or the loop is not open 

after a disconnect.  After several occurrences, an off-board or on-board  

warning alarm is generated.  Refer problem to CO.

2561

57345

Single polarity ringing current.  This error results from abnormal ringing 

current, but does not prevent the incoming call from being accepted.  One 

cause could be that the reverse current detector associated with the port is 

failing.  (Will not be detected by any tests.) Another cause could be that 

normal current is not detected.  In this case, neither incoming nor outgoing 

calls can be completed, and the dial tone test will also fail.  The last cause 

could be that certain types of noise are present on the CO line during the 

silent period of ringing.  First check for other errors.  If the count for this error 

is very high (255), and every test passes, then either the reverse current 

detector is defective or the CO line is noisy.  If the CO line is suspect, make 

Tip and Ring observations.  If the line is determined to be noisy, refer the 

problem to the CO.  If the reverse current detector is defective, ignore this 

error.

2817

57360

Ground but no ringing.  This error occurs on an incoming call on a 

ground-start trunk.  If ringing is not detected within 5 seconds of the Tip being 

grounded, the call is still accepted.  If the CO is of the No.  5ESS.  switch 

type, ringing delays of more than 5 seconds during heavy traffic are fairly 

common.  Check for other errors.

2817

57393

The loop is opening too slowly after a disconnect.  This error indicates an 

on-board problem, although the trunk may be functional.  Check for other 

errors.

3073

57376

No loop current on incoming call.  The incoming destination has already 

answered and no loop current has been detected.  If this is a hard fault, the 

dial tone test and every outgoing call should also fail.  Check for other errors.

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