[SIPForum-discussion] Is voice path before 200 OK is valid ?

Shakthi shakthi_msc at yahoo.com
Mon Jun 9 07:01:56 UTC 2008


 
Is voice path before 200 OK is valid ?
 
Pls look at the call flow:
 
    A                                B
 
              INVITE
     --------------------------------->
            180 Ringing
    <---------------------------------
           RTP (g.723)
    <-------------------------------->
            200 OK
     <-------------------------------
            RTP (g.723)
     <------------------------------>
            ACK
      ------------------------------->
            BYE
      <-----------------------------
            200 OK
       ------------------------------->
 
Is this a valid call flow?
Can RTP come in to the scene before 200 OK?
 
- Thanx
 


      
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