[SIPForum-discussion] Reason: Q.850; cause=41 Under SIP 183 w/SDP

Valencia Diaz Pablo pvalencia at grupogtd.com
Mon Mar 16 18:31:22 UTC 2015

Hi Nikita;


You should check ITU Q.950 recomendation;



For your 183 message 41 cause matches conference add.

addCONF 41 {ccitt recommendation q 954 conference-add-on-operations-and-errors (1)}



Pablo Valencia


De: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] En nombre de NK
Enviado el: miércoles, 11 de marzo de 2015 15:11
Para: discussion
Asunto: [SIPForum-discussion] Reason: Q.850;cause=41 Under SIP 183 w/SDP


Dear All,


Can you please help on the issue where i am getting Reason: Q.850;cause=41 under on SIP stack for 183 Session Progress.


I received SIp 183 w/SDP from vendor and its included the below parameters and then i received SIP 487 from vendor. I checked couple of documents but i have not received relevent information.


Can you please help on this if this is valid or it should have seperate messege for this.


SIP/2.0 183 Session Progress

To: <sip:1234567890 at <mailto:sip%3A1234567890 at> >;tag=1_1116_t229783_ki97_CtkS0B493D

From: <sip:011+123456789 at <mailto:sip%3A011%2B123456789 at> >;tag=gK0226417f

Call-ID: 10166308-3634993113-726293 at SBC1-A.mydomain.com

Via: SIP/2.0/UDP;branch=z9hG4bK172b17524b86324ef07648708b6f9bb8


Supported: 100rel

Contact: <sip:123456789 at;transport=udp>

Reason: Q.850;cause=41

Server: BTS10200/900-06.00.03.V00 (SIA)

Content-Length: 225

Content-Type: application/sdp


Thank you in advance.



Nitin Kapoor

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