[asterisk-users] Handling a non-responsive peer after it answers

[Joshua C. Colp]

On Mon, Dec 30, 2019 at 5:49 PM David P <davidswalkabout at gmail.com> wrote:

> Response below...
>
> On Fri, Dec 27, 2019 at 12:02 PM David P <davidswalkabout at gmail.com>
>> wrote:
>>
>> >
>> > I'm looking for a way of detecting in my dialplan when a peer becomes
>> > non-responsive after answering. [deleted] Is there a way to configure
>> > a handler for this state?
>> >
>> > We use v14.7.6 and we dial the peer this way:
>> >
>> >  same =>
>> >
>> n,Set(CHANNEL(hangup_handler_push)=${CONTEXT},handleHangupByCaller,1(args))
>> >  same =>
>> >
>> n,Dial(${AddressToReachPeer},2,b(${CONTEXT}^afterDialingPeerLogIpOfCb^1(${UUID}^${StartEpoch})))
>> >  same => n,Goto(handle${DIALSTATUS},1)
>> >
>>
>
> "Joshua C. Colp" <jcolp at sangoma.com> replied:
>
>> [deleted] As for hanging up a call when the remote
>> goes away that depends on the channel driver. For SIP both chan_sip and
>> chan_pjsip provide session timers which use SIP messages to determine if
>> the call is no longer valid, or RTP timeout which hangs up the call if
>> media is not flowing for a period of time. These are configured in the
>> respective channel driver configuration file.
>>
>
> Thanks, Joshua.
>
> We want to check if a peer is responsive every few seconds, because it's a
> person-to-bot call and we want to respond gracefully if the bot fails.
>
> I tried adding
> rtptimeout=4
> to the config of the peer in sip.conf, but this causes hangup during the
> person's turn.
>
> Then I looked into session timers, and found that
> https://issues.asterisk.org/jira/secure/attachment/28201/AsteriskSipSessionTimers.pdf
> says the shortest period supported for such checks is 90 seconds, which is
> much too long for us.
>
> Is there another option? Would it allow calling a script or playing a
> prompt on the way to hanging up?
>

Those are the available options. There is no capability to call a script or
play a prompt or anything like that that I can think of.

-- 
Joshua C. Colp
Asterisk Technical Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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