I've got a Partner ACS which seems to be dead as far line 1 is concerned. Line 1 is no longer picked up by the auto attendant, and selecting line 1 from an extension only gives silence.

I've moved the line cord to a different line jack, and it works fine there, so it's something in the ACS unit.

Has anyone come across this and found a simple fix?

I've run into dead ports, or line ports that will give continious ringing when a line is idle. If you are under warranty (2 years on Avaya equipment purchased through legitimate channels), contact your Avaya Business Partner. If you are past the warranty period, and have spare line ports, move the line, and through programming make the new position look as if it were line 1 on the phones.

This unit is well out of warranty, and I have spare line ports, so I'll do the reprogramming.