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SBC Rejects with SIP Response 420 Bad Extension (Doc ID 2406406.1)

Last updated on JUNE 07, 2018

Applies to:

Acme Packet 3820 - Version S-Cz7.2.5 to S-Cz7.4.0 [Release S-Cz7.0]
Information in this document applies to any platform.

Goal

Call scenario:

A calls to B through session border controller.

Issue reported:

When A calls to B the session border controller rejects the call with the SIP response 420 Bad extension.

Wireshark trace captured:

A sends a below INVITE message to the SBC 

Message Header

Via: SIP/2.0/UDP 1.30.40.5:5060;branch=z9hG4bK-19441-1-0

From: "," <sip:sipp@1.30.40.5:5060>;tag=19441SIPpTag001

To: sut <sip:2222#@1.10.3.70:5060>

Call-ID: 1-19441@1.30.40.5

CSeq: 1 INVITE

Contact: sip:sipp@1.30.40.5:5060

Max-Forwards: 70

Subject: Performance Test

Diversion: <sip:+985079002@172.22.237.79>;reason=unknown;privacy=off;counter=5

Diversion: <sip:+985079003@172.22.237.79>;reason=unknown;privacy=off;counter=1

Require: timer

Content-Type: application/sdp

Content-Length: 168

  

SBC ingress interface rejects the INVITE message with SIP response 420 as below:

Message Header

Via: SIP/2.0/UDP 1.30.40.5:5060;branch=z9hG4bK-19441-1-0

From: "," <sip:sipp@1.30.40.5:5060>;tag=19441SIPpTag001

To: sut <sip:2222#@1.10.3.70:5060>;tag=aprqngfrt-ftnvmg3000020

Call-ID: 1-19441@1.30.40.5

CSeq: 1 INVITE

Unsupported: timer

 

 

 

Solution

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In this Document
Goal
Solution


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