[SIPForum-discussion] IP Media 3000 generating BYE message

[Halit Sakca]

Hey Ashoke,Media Servers do send BYE due to RTP traffic stop.Please check RTP (announcement) after INFO was sent.The media server supports receiving ICMP Destination Unreachable messages for any UDPport being used for RTP transmission. The media server can be configured to stop RTPtransmission to ports that are no longer available, reducing unnecessary network traffic andimproving resource usage on the media server. For media servers being controlled by MGCP,the media server sends a DLCX when an ICMP Destination Unreachable message is receivedfor a connection. For media servers being controlled by SIP, the media server sends a BYEwhen an ICMP Destination Unreachable message is received for a connection.

Selamlar,

Halit Sakca


From: ashoke.k.ghosh at gmail.com
To: skanumury at yahoo.com
Date: Wed, 11 Jun 2008 19:01:23 +0530
CC: discussion at sipforum.com
Subject: Re: [SIPForum-discussion] IP Media 3000 generating BYE message










Hi,
 
Thanks for your reply. I am attaching the ethereal 
traces again. Please use thereal network analyzer software to open these 
files.
 
The call flow mentioned by me in my earlier mail 
indicates that whenever the dialog is to be terminated, that would be initiated 
from AS and not from Media Server. Under no circumstance, media server would 
release the call.
 
Please help me understand why BYE is being 
generated by media server.
 
Best 
Regards..
 
*******************************************
Ashoke 
Kumar Ghosh
Mobile : 919324279664
Email: ashoke.k.ghosh at gmail.com
*******************************************


  ----- Original Message ----- 
  From: 
  kanumuri 
  Sreeram 
  To: Ashoke Kumar Ghosh 
  Sent: Tuesday, June 10, 2008 9:36 
PM
  Subject: Re: [SIPForum-discussion] IP 
  Media 3000 generating BYE message
  

  
  Hi 
  Asjoke,

  can u 
  resent the trace file.
  this 
  is the error I am getting when I am trying t open in wireshark
  he 
  capture file appears to be damaged or corrupt.
(pcap: File has 
  92621609-byte packet, bigger than maximum of 65535)
   
  Also, 
  you mentioned
  >But we 
  are not able to understand why BYE message is being sent my Media Server
  But in 
  the call flow u showed As is senting bye. pl clarify this also.
  
  ----------------BYE------------------>
  <-------------200 
  OK----------------
   
  -Sreeram.

  ----- 
  Original Message ----
From: Ashoke Kumar Ghosh 
  <ashoke.k.ghosh at gmail.com>
To: discussion at sipforum.com
Sent: 
  Tuesday, June 10, 2008 10:16:09 AM
Subject: [SIPForum-discussion] IP Media 
  3000 generating BYE message


  

  Hi Guys,
   
  I am handling a application server which provides 
  prepaid service. We are using IP Media 3000 for playing announcement and digit 
  collection. The call flow between application server and media server is like 
  this.
   
  AS        
                  
              MS
  ---------------INVITE----------------->
  <---------100 
TRYING--------------
  <-----------200 
  OK-------------------
  ----------------ACK------------------->
  ----------------INFO------------------>
  <----------200 
  OK--------------------
   
  <--------------INFO-------------------
  --------------200 
  OK---------------->
  ----------------INFO----------------->
  <------------200 
  OK-----------------
   
  <--------------INFO-------------------
  ---------------200 
  OK--------------->
  ----------------BYE------------------>
  <-------------200 
  OK----------------
   
   
  We were trying to divert some TDM network traffic 
  through application server. But got stuck with an issue of call failure. After 
  investigation, we found that on certain occassion, Media Server is sending BYE 
  message at some stages. But we are not able to understand why BYE message is 
  being sent my Media Server. As per the call flow, media server never would 
  generate a BYE message. Moreover, it is sending a 200 OK against the 
  previously sent INFO from AS.
   
  I am attaching sample trace of a call between the 
  application server and media server. Please note that I could capture only the 
  messages from media server to application server. Can anybody help me 
  understand why this BYE message is being originated. Also I have noticed Cause 
  318 Q850 being mentioned in all the BYE messages. But I could not find this 
  release cause in Q850. Any idea what is this release cause.
   
   
  Best 
  Regards..
 
*******************************************
Ashoke 
  Kumar Ghosh
Mobile : 919324279664
Email: ashoke.k.ghosh at gmail.com
*******************************************



_________________________________________________________________
Şimdi aileye katılmanın tam zamanı - Yeni nesil Ücretsiz Windows Live Hizmetlerini şimdi edinin!
http://get.live.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20080612/3c7bc3b1/attachment-0002.html>