[Users] ACK ACK ACK

[Klaus Darilion]

Hi Mark!

I guess you are forwarding the INVITE to the gateway using t_relay. 
Thus, you forward statefully by creating a transaction inside openser's 
tm module. Thus, for the transaction to complete, the tm module also has 
to see the ACK. Thus, you have to t_relay the ACK too.

regards
klaus

Mark Kent wrote:
> Hello,
> 
> It's been a little while since I last posted, but this
> will look familiar to those who remember:
> 
> The scenario is this:
> 
>  Phone sends openser an invite, which tries to set things up with the
>  PSTN gateway, which is unresponsive(*), and so it sends back to the
>  Phone:
> 
>  SIP/2.0 503 Service not available
> 
>  and the Phone sends back an ACK.
> 
> What should I do with that ACK?
> 
> One possibility is to do nothing, another possibility is
> to t_relay() it.
> 
> What suprised me was that when I do nothing then another 
> "SIP/2.0 503 Service not available" 
> message is automagically sent to the Phone.  
> So, that can't be the right thing to do.
> 
> Meanwhile, when I t_relay() it then things usually work.  
> But this doesn't seem like the right thing to do, since the 
> ACK is meant for the very box on which I'm doing the t_relay().
> 
> So, what's the story?   
> 
> Thanks,
> -mark
> 
> (*)don't worry about why the PSTN gateway is unresponsive.
> 
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-- 
Klaus Darilion
nic.at