[SIPForum-discussion] about the rfc3265

[Deepanshu]

Hi francy,

According to me the un-related SUBSCRIBE means with a new Call-ID (not same with the initial SUBSCRIBE, while refereshing the SUBSCRIBE request MUST have the same Call-ID), new ID parameter in the Event header and a new From-tag (as a new request should always have a new From-tag according to 3261).

HTH.
Deepanshu Gautam

  ----- Original Message ----- 
  From: francy at accel.net.cn 
  To: discussion at sipforum.org 
  Sent: Thursday, January 18, 2007 2:27 PM
  Subject: [SIPForum-discussion] about the rfc3265


  Hi everyone:

  in the specification of rfc3265, there is a paragraph:

     if a SUBSCRIBE request to refresh a subscription receives a "481"

     response, this indicates that the subscription has been terminated

  and that the subscriber did not receive notification of this fact.

     In this case, the subscriber should consider the subscription

     invalid.  If the subscriber wishes to re-subscribe to the state, he

     does so by composing an unrelated initial SUBSCRIBE request with a

     freshly-generated Call-ID and a new, unique "From" tag.

  could anyone tell me how to composing an unrelated initial SUBSCRIBE request.

  I hope to get everyone help and suggestion.

  Thanks in advance.



  Francy He



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