[Users] Zombie/hanging calls - TCPKeepalive timeout possible ?

Bogdan-Andrei Iancu bogdan at voice-system.ro
Thu Apr 27 09:25:14 CEST 2006


Hi Gerry,

no, there is no such mechanism available since it's not reliable - for 
example, during a call, more TCP connections may be used - one for the 
INVITE, close the connection during the call and open a new one for BYE 
- it's perfect possible, so you cannot rely on the transport status.

there are other ways to do it - at signalling level, via Session Timer; 
at media level - see when no more RTP traffic comes form one point.

regards,
bogdan

Gerry wrote:

>Hi,
>
>Is there any functionality implemented in SER/Openser which allows to detect
>dead endpoints ?
>
>Gnugk implements this with tcpkeepalive timeouts. Is there any equivalent or
>something similar in SER which would prevent non-active calls to hang - and
>incurr possibly large costs ?
>
>TIA for your help in the matter
>
>Gerry
>
>
>
>		
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