Inside Inmate Telephone Systems

Inmate Telephone Service
*** Learn how to save money on making and receiving inmate phone calls ***




It is important to allow inmates access to a comprehensive telephone system in order to maintain contact with their community and family. Maintaining these relationships helps inmates during rehabilitation by facilitating their integration with society once they are released.

Inmate telephone systems permit inmates to contact their family and friends while allowing calls to be monitored or recorded for security purposes. The systems can even alert authorities in the event of any suspicious activity.

There are ways to get around some of these restrictions, you can learn more in our inmate phone call guide.

Inmate Telephone Systems include:

  • A standard telephone switch
  • Standard telephones for staff use
  • Pay phones with special security features for inmate use
  • Specially designed software for call monitoring and recording
  • An archive system for recording and storing call data

Features of Inmate Telephone Systems include:

  • Call restrictions based on inmate category
  • Customized call restrictions based on inmate ID or a six-digit Inmate Personal Identification Number (IPIN)
  • Call restrictions regarding:
    • Inmate category/identity
    • Time of day
    • Length of call
    • Special emergency numbers or toll-free numbers
    • Three-way call detection/disconnection
    • Call forwarding
    • Call forwarding using a local proxy phone number
    • Calls placed through long-distance carriers
    • Calls made to pre-approved call list numbers
    • Call recording for later use, including call data such as date, time, number, account, cost and duration
  • Live monitoring/disconnection of calls, allowing staff to listen in on suspicious calls and disconnect calls if they indicate any threatening or criminal behavior.
  • Alerts sent when a particular inmate is making a call in order to allow live monitoring
  • Alerts sent when a particular number is dialed so that it can be monitored or even disconnected if threatening or criminal in nature
  • Number blocking, allowing prison staff to block the numbers of previous victims or government employees in order to prevent threatening calls
  • Phone blocking, allowing prison staff to disable certain phones during localized security breaches or other incidents
  • System shutdown, allowing prison staff to disable the entire telephone system in the event of an emergency or prison riot
  • Free calls to lawyers, counselors or other special numbers
  • Different billing options such as prepaid or debit cards and collect calls
  • International calling and collect calling for immigration detainees 

There are ways to get around some of these restrictions, you can learn more in our inmate phone call guide.

Learn about Three Way Calling and Call Detection and Avoiding False Three Way Call Detection.

Don't miss our guide on how to save money on Inmate Phone Calls.



Learn more about Inmate Telephone Providers, Inmate Telephone Service or Contact Us.

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Inside Inmate Telephone Systems


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