Solved Malformed sip request

[lbonjean]

Hi,

During a migration /POC we have this error.
We don't see anything incorrect with the packet.
Any suggestions on how to debug?

This is from the 3cx activity log and it happens durig an incoming call. Outgoing calls are ok.

XXXX= Source address
YYYY=Destination (3cx)


09/12/2021 13:27:11 - Malformed SIP request received:
BadSip Recv Req INVITE from XXXX:5060 tid=3cf49c19 Call-ID=5b5d6a160337e2817573e2a54d1cd380@XXXX:5060:
INVITE sip:8264@YYYY:5060 SIP/2.0
Via: SIP/2.0/UDP XXXX:5060;branch=z9hG4bK3cf49c19;rport=5060
Max-Forwards: 70
Contact: <sip:273@XXXX:5060>
To: <sip:8264@YYYY:5060>
From: "Draagbaar Luc thuis" <sip:273@XXXX>;tag=as083c07e4
Call-ID: 5b5d6a160337e2817573e2a54d1cd380@XXXX:5060
CSeq: 102 INVITE
Alert-Info: Bellcore-dr3
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Content-Type: application/sdp
Date: Thu, 09 Dec 2021 12:27:11 GMT
Supported: replaces, timer
User-Agent: Asterisk PBX 18.5.1
X-PBX: 98|273-C0000|273-C0000|39||||Q01PBX001-1639052830.5424766|32060||||Ttt|30|8264|8264|65||||||nl_BE||||||||||||
X-REALEXTEN: 8264-C0000
X-VoipMonitor-Custom1: Q02PBX001-1639052830.211491
Content-Length: 235

v=0
o=root 254689825 254689825 IN IP4 XXXX
s=Asterisk PBX 18.5.1
c=IN IP4 XXXX
t=0 0
m=audio 13890 RTP/AVP 8 0 3 101
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=maxptime:150
a=sendrecv


Thanks,

Luc

 

[YiannisH_3CX]

Hi @lbonjean

Without testing it in depth its hard to say but it looks to me that the alert-info is missing it's brackets <> . If the header can be removed so you can test that will tell us more.

 

[lbonjean]

Thanks, problem solved . I removed the alert-info and now it looks ok.

 

[YiannisH_3CX]

Glad I could assist.