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64 | Glossary
PSTN Gateway
A device that provides connectivity from a TETRA user to a PSTN subscriber and the other way around.
Additionally, for the duration of the call, the PSTN gateway allows TETRA signaling information to be passed from
TETRA Switching and Management Infrastructure to the external network user and from the external network user to
the TETRA SwMI in accordance with the TETRA Call Control (CC) procedures.
See also:
Public Switched Telephone Network
Switching and Management Infrastructure
PTPC
Point-to-Point Call
See also:
Private Call
on page 63
PTT Button
Push-to-Talk button
Public Switched Telephone Network (PSTN)
Traditional telephone network.
Push-to-Talk
Pressing this button on a radio allows the subscriber to transmit.
Radio
A two-way communication device used for voice and data.
Radio User Assignment/Radio User Identity (RUA/RUI)
This feature allows to assign alphanumeric user names to radio users, and to authenticate the radio users in a logon
process.
Radio User Assignment (RUA)
Part of RUA/RUI feature.
See also:
Radio User Assignment/Radio User Identity
Radio User Identity (RUI)
Part of RUA/RUI feature
See also:
Radio User Assignment/Radio User Identity
RCU
Remote Control Unit
Remote Control Unit (RCU)
A small device attached to a covert radio over a thin wire, used for operating the radio.
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