Gaurav, thank you very much for your information. I have downloaded rfc3325 and read the example.
In my case, there is no P-Asserted-Identity header field in the Invite packet, and if a user calls from UA to UA, the caller ID can be shown properly. "anonymous" only occur from PSTN to UA. Neverthless, thanks again for your information, it extends my knowledge about SIP. Best Regards, River On 4/4/07, Gaurav Kheterpal <[EMAIL PROTECTED]> wrote: > > Is there other field/way that we can obtain the caller ID? > >> Yes > > Refer to RFC 3325, Example 10.1 > > RFC 3325 - Private Extensions to SIP for Asserted Identity within Trusted > Networks > > If the FROM field is 'anonymous', chances are that SIP privacy is being > used. > > My 2 cents, > Gaurav > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of River > Sent: Wednesday, April 04, 2007 2:53 PM > To: [email protected] > Subject: [Sip-implementors] Question about Caller ID > > Hello, all, > > As I know, the caller ID show on the telephone is usually obtained from > the > >From or Contact header field. > Is there other field/way that we can obtain the caller ID? > > I would like to know this, because I have an argument with someone about > the > caller ID. > The scenario is a user makes a call from Mobile phone to an UA. (The UA > uses > the information from From header field to show the caller ID) > The telephone which is connected to the UA is not able to show the caller > ID, > and I find that both From and Contact header field(INVITE packet sends > from > sip server) of the call contains "anonymous" instead of mobile phone > number, > I think this is the reason why the telephone cannot show the caller ID. > Although I don't know why the INVITE packet from sip server is not able to > contain the mobile phone number, I think this problem is not caused by the > UA. > Am I correct about this? > Please advice. Thanks a lot! > > > Best Regards, > River > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
