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All A B C D E F G H I J K L M N O P Q R S T U V W X Z

P

Public Switched Telephone Network (PSTN)

Public network infrastructure used for voice communications.

Public Wi-Fi

Any Wi-Fi service established and owned by a contributing group that is provided for use by its customers on a wireless device.
Public Wi-Fi may be unsecured, password protected or have other secure authentication protocols established and managed by such contributing group.
See also unsecured networks.

Push-to-talk handsets

Handsets that have a button that needs to be pressed before audio can be communicated, thus providing off-hook audio protection.

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