I would like to replace GPRS/WCDMA with Wi-Fi. Though wifi is having low range ..it is still a option while in coorporate premise/residence etc am i wrong ?
(SDP) --------------- SIP ---------------- TCP/UDP ----------- IP (v4 or v6) ----------- 802.11 ------------ regards Vikram ----- Original Message ----- From: "Bilajbegovic Damir" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[email protected]> Sent: Tuesday, April 05, 2005 4:40 PM Subject: RE: [Sip-implementors] SIP with Cellular Phones > I think that it should be like this: > SDP on the top and instead of GSM I would write GPRS, and I would insert > instead of other layers and MAC I would insert GTP as the one that combines > all layers > > (SDP) > --------------- > SIP > ---------------- > TCP/UDP > ----------- > IP (v4 or v6) > ----------- > GTP > -------------- > GPRS/WCDMA - Air interface > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Tuesday, April 05, 2005 12:34 PM > To: [EMAIL PROTECTED]; [email protected] > Subject: RE: [Sip-implementors] SIP with Cellular Phones > > > Hi, > > > 3GPP and 3GPP2 are the standards body that define specifications for mobile > phones. It envisons a mobile environment built on IP-based communications > network. SIP is the main protocol selected for multimedia communications > (release 5). The underlying protocol would be UMTS or WCDMA. > > > > The figure relating to OSI model would look something like: > > > SIP > ---------------- > TCP/UDP > ----------- > IP (v4 or v6) > ----------- > other layers > ------------- > MAC > -------------- > GSM/WCDMA - Air interface > > > Please correct me if I am wrong. > > > Regards, > Sai. > > > PS: www.3gpp.org, www.3gpp2.org > > > ________________________________ > > From: [EMAIL PROTECTED] on behalf of Vivienne Curran > Sent: Mon 4/4/2005 11:42 PM > To: [email protected] > Subject: [Sip-implementors] SIP with Cellular Phones > > > > Hello, > > I am not sure if this is the correct list to be asking but anyhow!... > > I am reading about personal mobility at the moment whereby a user can have > one "number" and can be reached on any device. One the devices can be a > mobile phone. However I am confused as to how a sip call would be delivered > to a mobile phone or what technologies are used for this. If someone could > shed some light on this, I would greatly appreciate it. > > Your sincerely, > Vivienne, > > Send instant messages to your online friends http://uk.messenger.yahoo.com > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > > > > > Confidentiality Notice > > > The information contained in this electronic message and any attachments to > this message are intended > for the exclusive use of the addressee(s) and may contain confidential or > privileged information. If > you are not the intended recipient, please notify the sender at Wipro or > [EMAIL PROTECTED] immediately > and destroy all copies of this message and any attachments. > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
