I have a very strange problem with callerID from my PSTN.
The lines from the PSTN is connected to a vic2-2fxo card. I PSTN has callerID enabled which I can see whenever a caller calls on the telephone box but when the line is placed on the fxo, it does not display on the IP phones.
When I connected another line from a different PSTN, I get callerID displayed on the IP phones.
When I debug, the vic receives request for the callerID and displays a lenght error for the callerID and displays callerID failed.
PSTN does not know what to do as they're sending callerID.
I'll appreciate everyone's input on this with a fair rating.