Hi, I'm setting up a ser + * + cisco 2600 architecture where SER's clients got a 72.. (4 digits) plan number and Cisco's users got a 1... (4digits). I got 2 x-lite clients, MSN Messenger and a SJPhone registered to SER; A analog phone, an IP Phone and a Wireless IP Phone registered to my cisco gateway. Below are my troubles: 1 - Calls between 2 SER's clients are OK; caller got a tone ringing but nothing for the called (no indication and no callerID). Do I need to add a setcallerdId in my extensions.conf ? Previously, I was not obliged and I had callerid and an indication; 2 - When a x-lite client calls the analog phone linked to cisco's gateway, it's OK (ringing, answering, hanging up). life is great !!!!; 3 - When a x-lite client calls an IP Phone (wired or wireless), called got the ringing, caller heared the ringing tone but when caller tried to answer, call is destroyed; 4 - When an IP phone (wired or wireless) send a call to an x-lite client, it is not ringing in the called side (no ringing tone, no callerid indication) and asterisk got a such message: == Spawn extension (default, 7201, 1) exited non-zero on 'Local/7201@default-9565,2' and then destroyed the call Destroying call '502DA4E9-42E211D9-8AACFF3B-E217174C(a)10.0.0.8'0.8'. I thaught, I got some problems in my extensions.conf may be I'm wrong !!! my configurations files are linked. Thanks in advance Ahmed Boreau D. Informatique ESMT