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Threshold In Baltimore, Maryland |

Your Guide to the Threshold in Baltimore, Maryland

The Threshold is a Minimum security prison in Baltimore, Maryland. Inmates are incarcerated in this facility, which the Department of Corrections (DOC) oversees. The Threshold is a federal facility, and there is specific protocol you need to follow in order to visit or contact an inmate there. However, keep in mind that the procedures you need to follow at the Threshold may be different from those at other prisons in Maryland. If you plan on visiting family or friends at the Threshold, you need to be aware of this protocol before you arrive.

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One of the easiest ways to learn about the Threshold is to search online. You can find information about this prison in Baltimore by visiting its website at You can also call the Threshold at 410-727-0100. Sometimes, different DOC facilities also have email addresses you can use to contact DOC officials. You can email Threshold at .

Global Tel Link (GTL) – ConnectNetwork and Threshold

Global Tel Link (GTL) – ConnectNetwork is the official phone provider at Threshold. Inmates who want to make a call at this Baltimore facility need to have accounts to call through Global Tel Link (GTL) – ConnectNetwork. Phone calls are not free at Threshold, and inmates must have funds in their accounts in order to make calls.

It is important that you are familiar with the rules associated with Global Tel Link (GTL) – ConnectNetwork and Threshold. Different facilities and carriers have different rules. In fact, you need to know this information so you understand:

  • How much phone calls cost for inmates at a particular Maryland DOC facility.
  • Whether you have to apply to receive calls from inmates at the Threshold.
  • How to open a phone account with Global Tel Link (GTL) – ConnectNetwork.
  • How to add funds to an inmate’s phone account.