[Asterisk-Dev] Got SIP response 481 "Invalid CSeq Number" back from

[Federico Alves]

This is the trace from the Cisco side, it shows that the wrong sequential
number was received.

 

00:08:53: last method and CSEQ:110 118

00:08:53: INVITE CSEQ: 118

00:08:53: recvd method and CSEQ: 111 104

00:08:53: sipSPICheckRequest: CheckRequest fail on method 111 error code: 2
and

status: 481

 

00:08:53: CCSIP-SPI-CONTROL:  sact_active_new_message_request : Check
request fa

iled

 

I keep getting this problem every 5 calls from a Cisco AS5300. I use
G711-ulaw, with the default 160 bytes per frame (that is what the cisco
debug shows). I use no dtmf-relay. My dialpeer looks like this:

 

dial-peer voice 4481 voip

 huntstop

 incoming called-number 448.T

 voice-class h323 1

 voice-class sip url sip

 session transport udp

 codec g711ulaw bytes 160

 no vad

!    

 

The question is: is this a symptom that the SIP channel is broken in HEAD? I
use the latest HEAD version from 4 days ago. Can somebody please help me
understand the issue?

 

Federico Alves

 

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