US 12,126,760 B2
Telecommunications technology
Sam Bengston, River Falls, WI (US)
Assigned to T. W. Vending, Inc., River Falls, WI (US)
Filed by Sam Bengston, River Falls, WI (US)
Filed on Sep. 20, 2018, as Appl. No. 16/136,319.
Claims priority of provisional application 62/562,644, filed on Sep. 25, 2017.
Prior Publication US 2023/0421691 A1, Dec. 28, 2023
Int. Cl. H04M 3/22 (2006.01)
CPC H04M 3/2281 (2013.01) 10 Claims
OG exemplary drawing
 
1. A secure facility telecommunications system for monitoring telephone audio calls between an internal caller detained in the secure facility and an external caller located outside of the secure facility, comprising,
a monitored phone disposed inside the secure facility for use by the internal caller detained in the secure facility,
an outside telecommunication line connectible to the monitored phone and to an external phone used by the external caller located outside the secure facility,
an audio monitoring station communicatively connectible to the monitored phone and to the external phone connected to the outside telecommunication line, the audio monitoring station receiving an internal audio channel from the monitored phone and an external audio channel from the external phone, and
means to mute the external audio channel which the audio monitoring station receives from the external phone connected to the outside telecommunication line, whereby distorting sounds being transmitted to the audio monitoring station over the external audio channel may be muted so that a user of the audio monitoring station will hear words or sounds being spoken by the detained internal caller and being transmitted over the internal audio channel.