xiiList of terms
Cell
By theoretical design, it is the geographical representation of the cellular coverage area or service area defining both the associated size and shape.
CSM2
Cell Site Monitor 2. A unit that provides analog testing and monitoring capabilities at the cell site.
dBm
Decibels above a milliwatt. Unit of power measurement popular in wireless telephony, general telephony, audio, and microwave.
dBW
Decibels above a watt. Unit of measurement for radio power
DCC
Digital Color Code. An identifying code associated with the control channel of the cellular base transmitter which is used to enhance call processing in the cellular infrastructure.
DLR
Digital Locate Receiver. The TDMA equivalent of the Locating Channel Receiver. See LCR.
DMS-MTX
The acronym for Nortel's family of cellular switches: Digital Multiplex Switch - Mobile Transmission Exchange.
DPA
Dual Power Amplifier. A module which contains two discrete power amplifiers that provide amplification of the RF signal for the two corresponding Transmit Receive Units (TRU) on the same TRU/DPA shelf.
DRUM
DualMode Radio Unit Monitor. A test and monitor unit capable of radio communications with any Voice Channel of the local Transmit Receive Units (TRU) in the digital mode.
Duplexer
A device that consists of two pass or pass/reject filters configured to provide a common output port for both transmit and receive frequencies.
DVCC
Digital Verification Color Code. The TDMA equivalent of DCC.
ES
Expanded Spectrum. The additional frequency spectrum assigned to the cellular band. The Expanded Spectrum in the