CallerID dropping last two digits from inbound international call

[cox.s]

I have a customer that has reported that inbound international calls cut off the last two digits on the display for caller id and then stored in received calls directory with two digits missing which precludes a dial back from the received calls list, anyone aware if this a provider issue or a setting in CCM that can be tweaked to correct this.

[paul.harrison]

Debug the ISDN q931 and look at the callerID you receive, it's the only way to say if it's call manager or the carrier.

I suspect however the carrier is at fault, but would not mind being proved wrong.

Paul