Hello, I wonder if it is a bug, non standard compliance or whatever - When the PSTN side initiate a call to the IP leg, and the PSTN side hang up first, the Cisco gateway issues a BYE message. - When the IP side initiates the call to PSTN, and the PSTN hangs up first, the Cisco does NOT issue a BYE message. I want the Cisco to issue a BYE when the PSTN side hangs up if is initiated on either leg. I'm running a 3640 with this image: c3640-js-mz.122-15.T.bin best regards, hw