[Freeswitch-users] Tone Detection During Bridge

Ben Langfeld ben at langfeld.co.uk
Wed Mar 10 13:05:32 PST 2010

Dear List,

I have a requirement (due to poor quality Sipura products) to have
freeswitch listen for a tone during a bridge (standard local extension
dialplan segment). I have the required line:

<action appication="tone_detect" data="hangup 400 r 0 hangup
'normal_clearing' 1"/>

But I need to have this run _during_ the bridge (to listen for the tone
coming from the broken SPA3k and to break the bridge). Does anyone have any
idea how this may be achieved? There is no such documentation on the wiki.
This works perfectly if the bridge was not successful, and so will detect
tones during voicemail messaging.

Ben Langfeld

Wave > Email
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