[OpenSIPS-Users] SIP-I and CANCEL

[Vlad Patrascu]

Hi Giovanni,

Although I'm not claiming to be an expert at all in isup-sip 
interworking, the ITU Q.1912.5 document seems to say that it is not 
necessary to encapsulate REL in CANCEL. You can take a look at the 
example in Figure III.13/Q.1912.5 from Appendix III section of the document.

Regards,

Vlad Patrascu
OpenSIPS Developer
http://www.opensips-solutions.com

On 12/07/2018 07:18 PM, Giovanni Maruzzelli wrote:
> On Fri, Dec 7, 2018 at 6:14 PM Bogdan-Andrei Iancu 
> <bogdan at opensips.org <mailto:bogdan at opensips.org>> wrote:
>
>     Hi Giovanni,
>
>     The CANCEL is hop-by-hop, which means each SIP hop will generate a
>     completely new CANCEL (to be sent further) - there is not
>     proxying, so the changes you do over the incoming CANCEL will not
>     propagate into the outgoing CANCEL.
>
>
> Ciao Bogdan,
>
> yep, saw that
>
>
>     I cannot recall it, but is there a standard case of pushing ISUP
>     into CANCEL ?
>
>
> Not sure at all, I am looking around in various (too much) 
> documentation around the intertube, not yet sure if you must put isup 
> REL into CANCEL or not...
>
> Have a nice wend!
> -giovanni
>
> -- 
> Sincerely,
>
> Giovanni Maruzzelli
> OpenTelecom.IT
> cell: +39 347 266 56 18
>
>
>
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