Yes, I have, namely the P-Access-Network-Info header. There are two problems with it: 1. I cannot included called (B) party cell-id in it. 2. RFC says that proxy cannot insert this header, however I guess 3GPP allows P-CSCF to do it. Anyway in my case it will be an IMS AS retrieving location, acting as a proxy.
So I doubt it would be a suited solution. Bartek -----Original Message----- From: Dean Willis [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2008 7:00 PM To: Bartłomiej Kołakowski Cc: [EMAIL PROTECTED]; [email protected] Subject: Re: [Sip] draft-ietf-sip-location-conveyance - Question about potential usage of the Geolocation header On Aug 13, 2008, at 9:03 AM, Bartłomiej Kołakowski wrote: > Hello, > > I have got such concern regarding location conveyance in SIP > messages: I am designing IMS Appilcation Server, acting as a proxy, > that would query network elements for location information. As you > wrote proxies cannot insert message body, so the only way is to > provide location by reference. This requires appling SUBSCRIBE- NOTIFY > mechanism, which makes the architecture of the solution quit complex. > > In order to make it simpler I thought about including location > information as locationValue inside the Geolocation header. In fact we > do not need location represented with coordinates, but with cell- id > (that's mobile network). PIDF-LO does not support it, but maybe inside > a header that would be possible? There would be also an issue in > indicating loaction target whose location is included (we plan to > include both A and B parties location). Geolocation header would look > like this: > > Geolocation: {cell-id-3gpp} ;location-target="[EMAIL PROTECTED]";inserted- > by="[EMAIL PROTECTED]" > > What do you think about souch a usage of Geolocation header, maybe you > could give us some other solution? > have you looked at RC 3455? This defines IMS headers for cell-ID based location. -- Dean _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
