I am seeing some funny behaviour and wonder if anybody can throw some light on this. I have a 3640 running a late edition 12.4 IOS. The system has a NM-2V with a vic-2fxo fitted. If I connect 2 lines to the card then port 0 rings on port 1 and port 1 does not ring. I have tried every combination I can find but cannot get the port 0 to ring on port 0 or port 1 to ring at all.
I have set up with 2fxo cards and can get both cards to show this behaviour at the same time, have swapped cards out and tried other versions of the IOS.
Anybody else seen this and know what is happening?