Hi, There's a possibility that not CSPS but the UA2 is rejecting the INVITE ( well, I guess that is the message that you're looking at). 1. It would help troubleshooting if you show the INVITE and associated 400 message. 2. Additionally, CSPS's error_log in /opt/sip (Solaris) or /usr/local/sip (RedHat) might give you an indication of what is going on and of course 3. any debug/log info from UA2. ( What type of hardware/software is it anyway ?) cheers, Jan On Wed, 12 Apr 2006 AR. kneaded and moulded: |Dear ALL | | I have two SIP Proxy servers , One is SER, another one is CSPS (cisco) | |When I call a phone number that is belong to the CSPS routing, using |the SER subscriber, the packet form SER to CSPS will get a problem |with "400 Bad request" . (It's ok, If the UA in CSPS call to the UA |in SER) | |My architecture is : | UA1----SER----B2BUA---RADIUS | | | | | Internet | | | | | CSPS--UA2 | | Logs of B2BUA : | 20060412-144443.276 [57396144] WARN bcWorker: |uaState/UaStateRinging.cxx:133 UaStateRinging::Received 400 |20060412-144443.276 [57396144] INFO bcWorker: |controlState/StateCallReady.hxx:98 StateCallReady::bye was called, |incomplete transaction | |Does anyone know how to solve it? | |thanks | |AR.