[SIPForum-discussion] SIP Help

[Deepanshu]

Re: [SIPForum-discussion] SIP HelpTo 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
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    >
    >
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