[SIP Beyond VoIP] In-Dialog Requests

Adrian Georgescu ag at ag-projects.com
Tue Jul 15 15:49:26 CEST 2014

SIP SIMPLE SDK is using PJSIP stack but is not a mere 1-1 wrapper for low level PJSIP functions.

The SDK has its own capabilities and functions that may map or not with PJSIP functions.

The documentation is here:



On 15 Jul 2014, at 15:32, Yufei Tao <yufei.tao at gmail.com> wrote:

> Hi
> I want to use send and process in-dialog (invitation dialog) requests using Python SipSimple but got 500 unhandled error from the SipSimple client that receives the in-dialog request. From the documentation: 
> http://www.pjsip.org/release/0.5.4/PJSIP-Dev-Guide.pdf
> 12.1.5. Application can use base dialog API to create and send requests inside the dialog
> 12.1.6. the invite session handles INVITE, BYE, ACK, CANCEL, UPDATE and PRACK messages that occurs in a dialog. When application wants to support or handle other types of messages, it must reigster itself to the dialog as dialog usage. This will enable the application to process incomding requests that are "unhandled" by existing dialog's usages.
> Obviously this is supported by PJSip. But does this have any wrapper in Python SipSImple? I had a look at the code but failed to find it. Any tips or examples?
> Thank you!
> Yufei
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