[Serusers] mediaproxy timeout problem

[Paul van Schagen]

Hi 
 
I am testing mediaproxy with ser. I have a config with a Grandstream
handytone 486 as a UA  and a CISCO 5350 as a gateway.
My sip server is SER 0.9.0 . I find that when setting up a phone call
and disconnecting the Grandstream ( power off or 
disconnecting LAN cable ) the mediaproxy doesn't timeout and disconnect
the call. This is what I have done ...
 
Grandstream 486 -------- SER 0.9.0 with mediaproxy ------------CISCO
5350
 
I setup a call from a Grandstream Handytone 486 to the PSTN. and see
this on the proxy server.
 
root#  ./sessions.py
 
Caller                Via                     Called             Status
Duration  Codec  Type   Traffic  
           
------------------------------------------------------------------------
---------------------------------
------------
212.4.174.186:18400 - 217.194.194.181:35008 - 83.157.4.99:56364  active
0'34"  G723   Audio  
35.81k/53.59k/18.71k
 
Total traffic:  4.09kbps/352bps/4.44kbps (in1/in2/out)
Session count:  1
 
 
Now I disconnect the grandstream from the LAN cable in the middle of the
conversation to test the timeout function of the mediaproxy.
now I get this.
 
root # ./sessions.py
 
Caller                Via                     Called             Status
Duration  Codec  Type   Traffic             
------------------------------------------------------------------------
---------------------------------------------
212.4.174.186:16652 - 217.194.194.181:35010 - 83.157.4.99:56364  active
0'36"  G723   Audio  62.92k/74.53k/12.77k
 
Total traffic:  16.53kbps/0bps/15.47kbps (in1/in2/out)
Session count:  1
 
 
The disconnect is reflected in in2 (0bps ), the connection stays active
because I keep on receiving UDP packets ( background noise maybe or
somebody talking ) from the PSTN gateway. 
Is it correct to assume there is no end to end communication anymore as
soon as one of both RTP streams is in 0bps ? or could it be that in that
case there is silence from one end ? If it is correct to assume the
connection to the UA has been lost as soon as there is no UDP data
coming from it , how can I modify mediaproxy in a way it will disconnect
on either one of the inputs being in 0bps?
 
any help highly appreciated .
 
Paul van Schagen
 
 
 
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