Hi, The message that asterisk receives is not a retransmission but this is the same message but it enters asterisk from other sip proxy which is not a loop. The flow is the following
Asterisk SIP Proxy (Location Service) INVITE (to registrar) ---------------------> INVITE (to voicemail when not registered) <-------------------- when message enters asterisk for the second time it ofcorse has some extra SIP specific header like Record-Route and Via and the Request-URI is changed. And this causes 491 response. Can I do something about this? Can this behaviour be controlled, what do I have to change in the message so that asterisk won't treat it with 491 response? Thanks Tomasz On Dec 21, 2007 7:28 PM, Terry Wilson <[EMAIL PROTECTED]> wrote: > What is the reason for such response? > > > SIP/2.0 491 Request Pending > Via: SIP/2.0/UDP 192.168.129.74:5160;branch=z9hG4bK17c3.17db29e7.0 > ;received=192.168.129.74 > Via: SIP/2.0/UDP 192.168.129.74 ;branch=z9hG4bK17c3.23083974.0 > Via: SIP/2.0/UDP 192.168.129.74:5070;branch=z9hG4bK5b33ae78;rport=5070 > From: "IPFon" <sip:[EMAIL PROTECTED]:5070>;tag=as7217acbc > To: <sip:[EMAIL PROTECTED]>;tag=as7217acbc > Call-ID: [EMAIL PROTECTED] > CSeq: 102 INVITE > User-Agent: Asterisk PBX > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY > Supported: replaces > Content-Length: 0 > X-Asterisk-HangupCause: Normal Clearing > X-Asterisk-HangupCauseCode: 16 > > > Asterisk will send a 491 Request Pending when it is currently processing > an INIVTE on a particular call and it gets another INVITE that isn't a > retransmission. > > > _______________________________________________ > --Bandwidth and Colocation Provided by http://www.api-digital.com-- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
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