[SIPForum-discussion] Real time scenario of Call Hold Vs Tech-Invite document (call hold)

[Sandeep Mohapatra]

Hello,

I completely agree with Oscar. Each UA keeps track of its own CSeq number. This will increase after the final response received.
I mean to say that 
A Sends a Invite with CSeq as 1
B replys 100,180,200 with same Cseq number.
A send some other command which will have Cseq as 2
If B sends any command in between it will have Cseq as 1

Regards,
Sandeep

Oscar Alonso Sánchez Hernández <oasanchezh at gmail.com> wrote: Hello
  
 Each User Agent maintains its own Cseq number.
  
 If "A" sends INVITE to "B" with Cseq=1, the second INVITE must have Cseq=2 only if "A" send this re-INVITE.
  
 But, If "B" sends the second INVITE to "A", it initiates its own Cseq number (i.e. Cseq = 1).
  
 Refer to http://tools.ietf.org/html/draft-ietf-sipping-service-examples-14#section-2.5
  
 Regards,
 Oscar Sanchez


 2008/5/27 Shakthi <shakthi_msc at yahoo.com>:
  When 'A' and 'B' are in a session, if 'A' puts 'B' on hold, what is the C-seq should be?
 If the C-seq is 2-INVITE, do any of you aware of Tech-Invite document? 
  
 In this Tech-Invite document, the call flow for the Call Hold scenario says that, when 'A' puts 'B' on hold, the C-seq value wil be as 1-INVITE.
  
 I am confused with this document. Can anyone tell me what will be the C-seq value in A-B session when 'A' holds 'B' ?
  
  
 Thanx in Advance
 -Shakthi
 

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