[OpenSIPS-Users] Detect failed SIP server

[Bogdan-Andrei Iancu]

It may sound like a stupid question, but are you sure that the timeout
408 is generated by your OpenSIPS and not received from next hop ??

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 05/10/2013 05:59 AM, microx wrote:
> Hi Bogdan-Andrei,
>
> In my test environment, an outbound proxy forwards each received message
> from UA to an internal SIP proxy server.
> The SIP proxy server sends the message back to the outbound proxy after the
> proxy server processed the message. 
> As you said, the SIP proxy server returns 100 try to the outbound proxy when
> receiving an INVITE (the message flow is shown below). So fr_timer should be
> replaced with fr_inv_timer (but I leave the fr_inv_timer to default).
> Anyway, after I modified my configuration to 
> modparam("tm", "fr_timer", 10) 
> modparam("tm", "fr_inv_timer", 32) 
> modparam("tm", "fr_timer_avp", "$avp(timeout)") 
> modparam("tm", "fr_inv_timer_avp", "$avp(intimeout)")
> route { 
> $avp(timeout) = 32;
> $avp(intimeout)=32;
> !t_relay(); 
> } 
> nothing changes. A caller remains to receive 408 request timeout after 10
> seconds. I did lookup this forum but couldn't find directly related threads.
> Please help me address this issue. Thanks so much.
>
> Best regards,
> Chen-Che
>
>             INVITE
> 1. caller--------->outbound proxy-------proxy server
>              100 try
> 2. caller<--------outbound proxy-------proxy server
>                                                INVITE
> 3. caller----------outbound proxy--------->proxy server
>                                                 100 try
> 4. caller----------outbound proxy<---------proxy server
>                                                 INVITE
> 5. caller----------outbound proxy<---------proxy server
>                                                 INVITE
> 6. caller----------outbound proxy--------->proxy server
> .
> .
> .                
>                                                408 timeout
> n. caller----------outbound proxy--------->proxy server
>                                                408 timeout
> n+1. caller----------outbound proxy<-----------proxy server
>              408 timeout
> n+2. caller<--------outbound proxy-----------proxy server
>
>
>
> --
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>
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