[SIP Beyond VoIP] Notify - 403 Forbidden response

[Saúl Ibarra Corretgé]

Hi,

On Jan 2, 2013, at 10:44 AM, Nitin Jain wrote:

> Hi ,
> 
> Please find attached the wireshark trace at Sylkserver. Sylkserver did not send INVITE to the user mentioned in the Refer-To Header.
> 
> Also from sylkserver notification trace It looks that Sylkserver is trying to transfer the call.
> 

[snip]

> 
> Only Difference I could see between working logs(sip simple client) and non working logs (Our own Sip Client) are
> 
> 1. Sip simple client subscribe to conference event package where as our client don’t
> 

This is not needed.

> 2. SIP simple Client sends REFER to server out of dialog where as Our client send REFER to server in dialog.
> 

This is the problem. Inviting participants must be done with an out of dialog REFER, as per RFC4579 (sec 5.5). In dialog REFER requests are rejected by SylkServer.


Regards,

-- 
Saúl Ibarra Corretgé
AG Projects