Error Codes - Northern Telecom M5317TX Installation Manual

52 Optional equipment

Error Codes

If the M5317TX displays an error code after initialization, locate the code on
the following table and go through the steps below. Check the display after
each step-If the error code persists, go to the next step.
If error codes >>10<< or >>11<< are displayed, there may be a
1.
problem in the S/T loop. Check all connections to the NT1 and
confirm that the NT1 is working properly-use the tables below to
check normal indicators on the NT1.
If the NT1 does not show these indicators, it is not ready for use
with the M5317TX. Troubleshoot the NT1 using the NT1 and
S/T Bus Installation Guide, NTP 297-2451-207.
M5317TX and CustomNet Installation Guide
Error Code
>>10<< S/T loop sync loss and/or Frame sync loss
>>11<< L1 transmit timer expired
>>21<< Voice TEI removed by network
>>22<< Circuit data TEI removed by network
>>23<< Voice and circuit data TEI removed by network
>>27<< All TEI removed by network
>>28<< Voice link not established
>>29<< Circuit data link not established
>>2B<< No Layer 2 link established
>>30<< No Layer 3 link established
>>31<< No valid voice SPID
>>32<< No valid data SPID
>>90<< Restricted power mode in use. Lower ringer and
speaker volumes apply
Northern Telecom DMS NT1
Status Indicator
Power
S/T
U-sync
Test
AT&T NT1
Status Indicator
Power
Terminal Error
Active
Line Error
Description
LED light
ON
OFF
OFF
OFF
LED light
ON
OFF
ON
OFF