ISDN Disconnect “Cause i = 0x829F”

Caller is able to recieve calls but unable to make calls, when making a call they get a  flat dial tone.

Traces show the following:

Dec 20 10:51:51.676: ISDN Se0/0/0:15 Q931: RX <- DISCONNECT pd = 8  callref = 0x
95B8
Cause i = 0x829F – Normal, unspecified

The Cause code 82 is related to the receiving equipment (telco switch) requesting to use a channel that is not activated on the interface for calls.

This looks like an issue with BT who have deactivated the line (in this case, due to not paying bills)

Continue reading