User's Manual

61280.003L1-1B PAGE 47
4/12/99
RECOMMENDED ACTIONS:
1. Check the incoming DS1/DSX-1 signal for BPVs using a T1 test set.
2. Correct the line code on the Tracer or DS1/DSX-1 equipment.
YEL/AIS ALARM
This alarm indicator will flash when a T1 Yellow alarm occurs.
The indicator will remain on (solid) to indicator an AIS alarm
when the DS1/DSX-1 is receiving a blue code (a string of 2316 1’s
with no more than 1 zero).
RECOMMENDED ACTION
POSSIBLE CAUSE (SEE LIST BELOW)
• The DS1/DSX-1 equipment is sending a “blue code” (all 1’s)
to the T1 input. ............................................................................... 1,2
• The far-end equipment is in a red condition and
transmitting a yellow alarm. ........................................................... 3-5
RECOMMENDED ACTIONS:
1. Reset the upstream equipment and verify normal operation.
2. Verify the presence of a DS1/DSX-1 signal at the T1 monitor jack
using a T1 test set.
3. Check the far-end equipment for alarms or a red condition.
4. Check the T1 connections at the far-end equipment.
5. Reset the far-end equipment.
TROUBLESHOOTING
I M P O R T A N T
If problems persist after you have followed the Recommended
Actions, contact ADTRAN Technical Support at [phone].