Noise on all extensions for one analog line

[roomi008]

We have 8 analog phone lines (801-808) plugged into two 408 GS/LS-ID-MLX cards. All the extensions have continous noise while selecting line 802. Its fine if any other line is selected. I checked the phone line and its fine. This noise is generated after connecting to the PBX only.

Can you experts please help me to troubleshoot this?

 

[tdaugirdas]

Try temporarily plugging line 802 into another open line port or to keep it simple swap it with a known good line port - and test it at the operator phone. If any line connected to 802 causes the noise - you have a bad line port. You can try resetting just that line port and or the whole module in maintenance - to see if it makes a difference. If not - and the problem is the port - either skip that port and/or get a replacement module.

Tom Daugirdas,
President
STCG, Inc.
stcg.com