We use a LUA script for Eavesdrop and never had this issue.
Looking at the FS documentation, you can use w1@ext to speak with the callee or w2@ext to speak with the caller.
Here are the DTMF signals during eavesdrop
Is it possible you pressed any DTMF key during the call? If not, you could perhaps you could try w0@ext ?
I need to enable client to eavesdrop on certain calls. The fs is in a penitentiary institute and certain types of criminals (i..e mafia related) must be listened.
I am trying to implement eavesdropping like so:
api originate {sip_secure_media=true}user/$ext &eavesdrop($uid)
(where, I hope, $ext and $uid are self-explicatory)
Is there ANY way to mute the microphone of the eavesdropper? It’s a bit of a give-away if the criminal can hear the background noise
Thanks
Francesco