al Message-
From: Franz Edler [mailto:franz.ed...@kabsi.at]
Sent: lunedì 31 agosto 2015 18:41
To: 'Paul Kyzivat'; sip-implementors@lists.cs.columbia.edu
Subject: Re: [Sip-implementors] Two provisional responses in one dialog: 180
Ringing and 183 Session Progress
Hi Paul,
> I don&#
Hi Paul,
> I don't know ISUP, so I'll ask some followup questions.
>
> > we have a nasty situation in case of interworking SIP to ISUP.
> > The INVITE request is mapped to ISUP/IAM, that's as expected.
> > But then on the ISUP side we have a colored ringback tone service.
> > This causes in an
On 8/31/15 12:41 PM, Franz Edler wrote:
The 180 doesn't mean that you should generate ringback instead of playing
in-band ringback.
You should treat the 180 as meaning: generate ringback if you are not
receiving in-band media.
O.k. understood, but the " ... if you are not receiving in-band med
On 8/30/15 3:18 PM, Franz Edler wrote:
Dear SIP-ISUP experts,
I don't know ISUP, so I'll ask some followup questions.
we have a nasty situation in case of interworking SIP to ISUP.
The INVITE request is mapped to ISUP/IAM, that's as expected.
But then on the ISUP side we have a colored ringb
Dear SIP-ISUP experts,
we have a nasty situation in case of interworking SIP to ISUP.
The INVITE request is mapped to ISUP/IAM, that's as expected.
But then on the ISUP side we have a colored ringback tone service. This
causes in an ISUP ACM message with both flags set:
- Backward Call Indicator:
