Hi all I have a rather odd problem that I hope somebody can shed some light on. I have a Asterisk server (1.0.7) that is connected to a Cisco 2600 router (c2600-is-mz.122-28a) fitted with an E1 card. The E1 is configured for QSig and is conencted to our local Ericsson MD110 which goes out to the PSTN. We have a DID range assigned to the E1 and can make and receive calls from/to SIP attached phones through this gateway setup. The problem i have is with transfering calls. I can do supervised and unsupervised transfers from/to any of the IP phones behind Asterisk. I can also recieve a call from the Ericsson and transfer it to another IP phone without a problem. What I can't do is receive a call from the Ericsson on an IP phone and then transfer it back to another Ericsson extension or a PSTN number. Watching the call progress with Ethereal (really neat VIOP tracker in the latest version), I can see the call setup take place, the receiveing phone actually rings, but once I answer the receiving phone the call setup never completes and the trace shows a continuous stream of invites, acks and ok's. Here is a sample: SIP Request: ACK sip:62153@10.12.3.189:5060 SIP/SDP Request: INVITE sip:62153@10.12.3.189:5060, with session description SIP/SDP Request: INVITE sip:anonymous@10.12.3.189:5060, with session description SIP/SDP Status: 200 OK, with session description SIP Request: ACK sip:62153@10.12.3.189:5060 SIP/SDP Status: 200 OK, with session description SIP Request: ACK sip:anonymous@10.12.3.189:5060 The digit 6 is the truck access number to route out to the Ericsson with the 2153 being an Ericsson extension. The anonymous is being received from the Ericsson instead of CLI at the moment (could this be a problem??) This sequence of packets repeat continually until one of the phones hangs up. My current two suspects are the Cisco gateway that maybe does not support transfer, but version 12.2x code should do and the Ericsson that is not communicating correctly with the Cisco. As an aside, call forwarding from my Cisco 7960 to an Ericsson extension exibits the same behaviour, but that can be expected I suppose (??) Any ideas would me most welcome. Thanks Andre _________________________________________________________________ Startle on online friend with a 'nudge' - one of the great new features in Messenger 7.0! http://messenger.msn.co.za?DI=1054&XAPID=2532