[Freeswitch-users] Detecting multiple tones with freeswitch

[Michael Collins]

I'm with Jerris on the reliability issue, but if you can't switch carriers
and they won't budge on sending the audio inline then you're pretty much
stuck with what you've got. I do know that the tone_detect app works well.
It's been years since I've done anything with it so I'm a bit rusty. In
your case what I would do is use the execute_on_tone_detect to issue an
info app. I think you might have a value in there somewhere that will help
you differentiate between whether busy or ring was detected.

I wish you well. This is not a fun endeavor...

-MC


On Mon, Jan 5, 2015 at 12:32 PM, Bunea Lucian <lucibunea at gmail.com> wrote:

>  I have a dedicated short number and multiple DIDs. I also have a
> database with customer phone numbers and their corresponding DIDs.
> Each field agent has a mobile phone (from the same provider).
> When a call comes in freeswitch automatically routes the call to the
> designated field agent via the corresponding DID.
> I want to monitor what happens with the call after that, to be able to
> decide what to do with the call next.
> So basically, the call never leaves the provider's network.
>
> Btw, I did asked the provider to switch back the settings but the feedback
> was:
> "The behavior is normal because for calls made inside Vodafone network, we
> generate tones. Thus, for Busy, we play specific tone and then disconnect
> the call, signaling with SIP 480 (corresponding to the end of
> announcement). If a call comes from another network, User Busy is signaled
> on ISUP and SIP returned as such. The settings can not be changed per
> customer. "
> Unofficially, they acknowledged that their PBX behaved differently before
> because it was not correctly configured.
>
> PS: My provider sends the description of the tones using a reason header
> inside the SIP/183 message. But I was unable to find a way to extract it:
>
>
> http://lists.freeswitch.org/pipermail/freeswitch-users/2014-March/103645.html
>
>
>
> -------- Original Message --------
> *Subject: *Re: [Freeswitch-users] Detecting multiple tones with freeswitch
> *From: *Michael Jerris <mike at jerris.com> <mike at jerris.com>
> *To: *FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
> <freeswitch-users at lists.freeswitch.org>
> *Date: *05.01.2015 20:02
>
> You can never reliably depend on the tones, particularly with international traffic.  This is never going to work reliably unless you get useful sip signaling.  I would be demanding the carrier change settings back.
>
>
>
>  On Jan 3, 2015, at 7:46 AM, Bunea Lucian <lucibunea at gmail.com> <lucibunea at gmail.com> wrote:
>
> Hello,
>
> My SIP provider (Vodafone) decided to make me a Christmas present: they
> change the configuration of their SIP server.
>
> Using the old configuration they were sending SIP codes for decline,
> busy and unavailable.
> Now they are sending early media with tones (for decline and busy) and a
> one minute message for unavailable.
> Each status is followed by a SIP/480.
>
> Since I need to be able to distinguish between different statuses, I
> have determined the following:
> - if I don't receive a ring tone within 7 second, the called number is
> unavailable;
> - if I receive a busy tone within 4 seconds the called number is busy;
> - if I receive a busy tone after 4 second the call number has declined
> the call;
>
> This is how I tried to implement it:
> - after receiving early media (SIP/180 or SIP/183) a timer is started
> for call hangup (sched_hangup)
> - if I receive a ring tone within 7 seconds the timer is canceled
> (sched_cancel);
> - if I receive a busy tone a lua script is called;
>
>
> <action application="set" data="sip_ignore_remote_cause=true"/>
> <action application="set" data="execute_on_media=sched_hangup +7
> SUBSCRIBER_ABSENT"/>
>
> <action application="tone_detect" data="busy 425 w +60000 lua
> 'busy_detected.lua ${uuid} ${created_time}' 2"/>
> <action application="tone_detect" data="ring 450 w +7000 sched_cancel"/>
>
> <action application="bridge"
> data="sofia/external/${destination_number}@XXX.XXX.XXX.XXX" <sofia/external/$%7Bdestination_number%7D at XXX.XXX.XXX.XXX>/>
>
> But, for some reason, the tones are detected, but the applications are
> never called.
>
>
> If I add one of the following lines to the dialplan the corresponding
> application is called:
>
>  <action application="set" data="execute_on_tone_detect=sched_cancel"/>
>
> or
>
>  <action application="set" data="execute_on_tone_detect=lua
> busy_detected.lua ${uuid} ${created_time}"/>
>
> but I can't tell which tone was detected...
>
> What am I missing?
>
> PS: Tested with FreeSWITCH Version 1.4.14-1~64bit.
>
>  Regards,
> Lucian
>
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