Man Machine Interface (MMI) Relates to the CPS Plus and radios user interface.
MCCH Main Control Channel
MLE Mobile Link Entity
See also: Announced Cell Reselection
MMI Man Machine Interface
Mobile Country Code The MCC and MNC together form a unique TETRA system identifier that is broadcast by a
Dimetra system over the air interface.
Mobile Network Code The Mobile Network Code should be allocated by the national authority that allocates
frequency assignments in a country and should be requested from that authority at the same time as frequency allocations
are requested. The MCC and MNC together form a unique TETRA system identifier that is broadcast by a Dimetra system
over the air interface.
Modified Group Cipher Key Used to encrypt group addressed downlink signaling.
NGCH Next Generation Control Head
OTAR Over-The-Air-Rekeying protocol
Over-The-Air-Rekeying protocol (OTAR) Used in connection with Air Interface Encryption.
See also: Air Interface Encryption
PABX Private Automatic Branch Exchange
PABX Gateway A device that provides connectivity from a TETRA user to a PABX subscriber and the other way
around.
See also: Private Automatic Branch Exchange
PDV2 Permanent Disable Version 2
PEI Peripheral Equipment Interface
Permanent Disable Version 2 (PDV2) You can restore a disabled radio using CPS Plus.
Personal Hands-Free kit (PHF) In other words an earpiece or a handset.
PHF Personal Hands-Free kit
Private Automatic Branch Exchange (PABX) Allows to call local (office) extension numbers.
Private Call An individual call between two radios or between a radio and a console operator. Apart from the two
interlocutors, no one else can participate or listen to the call.
Private Duplex Call A private call between two radios that resembles a telephone conversation. The two individuals
can talk and listen at the same time without pressing PTT.
See also: Private Call, Push-to-Talk
Private Number Also called Private ID.
108 | Glossary
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