Conference Calls And Detection Of Calls

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Detecting Of Calls and Three-Way Calling In Jail Phone Service Systems

About Three-Way Systems

A three-way system is also known as voice conferencing. When a call is made between two people, it can be extended to another third party and this is known as three-way calling. The telephone exchange facilities make this possible or external facilities can also be used. Many home telephone systems use this type of three-way calling equipment.

Jail Phone Service systems – No three-way system allowed

Inmates are not allowed to use three-way systems for calling. This is because the calls can be extended to any number, even those that they are not authorized to call. If permitted, they could conspire with outsiders and make threatening calls to judges or other officials with the help of such three way equipment. Hence, inmates are prohibited from such calls.

Many calls made by inmates are attempts to make three-way calls. In about one tenth of these cases they are invariably connected with some kind of criminal activity. In the past, many inmates were prosecuted for such crimes because their calls were recorded. But aside from this, most three-way calls have led to problems, such as inmates making dangerous or threatening calls to people who are involved in the crime, including witnesses.

Three-way calls can be started very easily at home. It is done by pressing the cradle switch of the telephone for a split second. The telephone exchange immediately realizes that the subscriber wants to make a three-way call. The person being called is the automatically put on hold. The subscriber then receives a dial tone and he can call the third person. When the second call is put through, the subscriber only has to press the cradle switch of telephone again and the conference call is connected.

How to block three-way calls

All jail phone service systems are required to have the features of three-way call detection as well as a means of disconnecting it. However, it was seen that in only 30 to 40% of the cases, detection of the calls was successful, whereas the suppliers claimed the success rate to be about 80 to 90%. Inmates are also very smart in devising ways to block the detection of such conference calls. They do this by singing loudly, making tapping noises on the mouthpiece and so on.

Don't miss our guide to making Jail Phone Calls.



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Conference Calls And Detection Of Calls


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