[SIPForum-discussion] SIP Help

[Deepanshu]

Re: [SIPForum-discussion] SIP HelpFrom is the logical address (AOR) of the sender.
The Contact header field provides a SIP or SIPS URI that can be used
   to contact that specific instance of the UA for subsequent requests.
At most time it's IP address or hostname or GRUU of the sender. 
  ----- Original Message ----- 
  From: Avishek Chowdhury 
  To: Deepanshu 
  Cc: discussion at sipforum.org 
  Sent: Tuesday, May 29, 2007 3:23 PM
  Subject: Re: [SIPForum-discussion] SIP Help


  Then what is the difference between From and Contact?
  Both denote the same "sender"?

    ----- Original Message ----- 
    From: Deepanshu 
    To: Avishek Chowdhury 
    Cc: discussion at sipforum.org 
    Sent: Tuesday, May 29, 2007 12:45 PM
    Subject: Re: [SIPForum-discussion] SIP Help


    To and Contact is entirely different

    To header is logical address of *receiver*.
    Contact header is real address of  *sender*  who send the SIP message.
      ----- Original Message ----- 
      From: Avishek Chowdhury 
      To: Murgesh Kumbar ; Alex Zhang ; gujjenaveen at gmail.com ; ken_ryon at hotmail.com 
      Cc: discussion at sipforum.org 
      Sent: Tuesday, May 29, 2007 2:41 PM
      Subject: Re: [SIPForum-discussion] SIP Help


      Hi,

      If To header field denotes the destination address then please explain me the difference of To header field and Contact header field.

      Regards,
      Avishek

        ----- Original Message ----- 
        From: Murgesh Kumbar 
        To: Alex Zhang ; gujjenaveen at gmail.com ; ken_ryon at hotmail.com 
        Cc: discussion at sipforum.org 
        Sent: Tuesday, May 29, 2007 11:11 AM
        Subject: Re: [SIPForum-discussion] SIP Help


        To header is always the final destination in a point to point call.

        But, Request URI may or may not change with each hop depending on the routing used.(loose routing or strict routing.

        If loose routing is used , then Request URI is same as the value of 'To'
        If strict routing is used, Request URI changes with each hop.

        Please refer to rfc 3261 for more details.

        Hope this is clear.

        Regards,
        Murgesh




------------------------------------------------------------------------
        From: discussion-bounces at sipforum.org on behalf of Zhang, Alex GDNT (External:ASRB:G615)
        Sent: Tue 5/29/2007 10:17 AM
        To: gujjenaveen at gmail.com; ken_ryon at hotmail.com
        Cc: discussion at sipforum.org
        Subject: Re: [SIPForum-discussion] SIP Help


        Can anybody explain the difference between the usages of the To Header
        and the Request-URI in the start line? They both specify the destination
        of the invite message, but which is used to the real routing purpose?
        And how the rest is used?

        Thanks,
        ALEX 
        ESN: 8782
        -----Original Message-----
        From: discussion-bounces at sipforum.org
        [mailto:discussion-bounces at sipforum.org] On Behalf Of Naveen Gujje
        Sent: Tuesday, May 29, 2007 12:20 PM
        To: Ken Ryon
        Cc: discussion at sipforum.org
        Subject: Re: [SIPForum-discussion] SIP Help

        RFC 3665 would be sufficient.


        On 5/28/07, Ken Ryon <ken_ryon at hotmail.com> wrote:
        >
        >  http://www.networksorcery.com/enp/protocol/sip.htm
        >
        >  Cheers,
        >  -Ken
        >
        >
        > ________________________________
        > Date: Mon, 28 May 2007 14:50:49 +0200
        > From: gurudattbalaji at gmail.com
        > To: discussion at sipforum.org
        > Subject: [SIPForum-discussion] SIP Help
        >
        >
        > Hi all,
        >
        > Does any one has quick referrence quide for SIP? which talks about all
        > messages and headers of SIP.
        >
        > Pls share.
        >
        > Reg
        > Balaji
        >
        > ________________________________
        > Change is good. See what's different about Windows Live Hotmail. Check
        it
        > out!
        > _______________________________________________
        > This is the SIP Forum discussion mailing list
        > TO UNSUBSCRIBE, or edit your delivery options, please visit
        > http://sipforum.org/mailman/listinfo/discussion
        > Post to the list at discussion at sipforum.org
        >
        >
        _______________________________________________
        This is the SIP Forum discussion mailing list
        TO UNSUBSCRIBE, or edit your delivery options, please visit
        http://sipforum.org/mailman/listinfo/discussion
        Post to the list at discussion at sipforum.org

        _______________________________________________
        This is the SIP Forum discussion mailing list
        TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
        Post to the list at discussion at sipforum.org




------------------------------------------------------------------------


        _______________________________________________
        This is the SIP Forum discussion mailing list
        TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
        Post to the list at discussion at sipforum.org



--------------------------------------------------------------------------


      _______________________________________________
      This is the SIP Forum discussion mailing list
      TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
      Post to the list at discussion at sipforum.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20070529/550699ca/attachment-0002.html>