Hi Paul, I have doubt of the URI: <sip:[EMAIL PROTECTED];user=phone>
Say I have 2 Uas and registered to different registrar with different phone number UA1: <sip:[EMAIL PROTECTED];user=phone> UA2: <sip:[EMAIL PROTECTED];user=phone> If UA2 makes a call to UA1, it dials "1234", but how can it decide UA1's domain? (i.e. sip.freescale.com.) Regards, David [EMAIL PROTECTED] --------------------------------- Freescale General Business Information Freescale Internal Use Only Freescale Confidential Proprietary -----Original Message----- From: Paul Kyzivat [mailto:[EMAIL PROTECTED] Sent: Thursday, September 09, 2004 8:57 PM To: [EMAIL PROTECTED] Cc: Xiaogang Pang; [EMAIL PROTECTED]; Jacob Zhu Subject: Re: [Sip-implementors] REGISTER with a Tel uri [EMAIL PROTECTED] wrote: >>-----Original Message----- >>From: [EMAIL PROTECTED] >>[mailto:[EMAIL PROTECTED] Behalf Of ext Paul >>Kyzivat >>Sent: 08.September.2004 22:24 >>To: Pang Xiaogang-r63373 >>Cc: [EMAIL PROTECTED]; Zhu Jacob-r62823 >>Subject: Re: [Sip-implementors] REGISTER with a Tel uri > > >>If you want to avoid ENUM, then you should probably avoid >>tel: as well. >>Instead, use sip uris with the user=phone parameter: >> >> REGISTER: sip:freescale.com >> To: <sip:[EMAIL PROTECTED];user=phone> >> From: <sip:[EMAIL PROTECTED];user=phone> >> Contact: sip:[EMAIL PROTECTED] > > I don't know what value user=phone adds here. Its value is to say that what is in the user part is a phone number. 3261 has defined two namespaces for the user part, distinguished by the value of the user parameter, so it is good to be clear about which namespace is being used. Of course many systems don't really have two namespaces, and instead treat them as equivalent. If so, then it doesn't matter if you specify it or not. But unless the UA is certain about the conventions of the registrar it is safe to be explicit. Paul _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
