Manual Part 7
RBS 2000 Glossary
TD Transmit Data
TDMA Time Division Multiple Access
Mult
iplexing of several channels in a common frequency
band. Each channel is assigned a certain time division,
a time slot.
TDMA frame
GSM a
ir interface time frame comprising eight time
slots.
TEI
Terminal Endpoint Identifier
TEI is an identification code carried by a LAPD frame as
a terminal connection endpoint within a Service Access
Point (SAP).
TEMS
TEst Mobile Station
TF Timing Function
TG
Transceiver Group
Timing bus The timing bus carries air timing information from the
t
iming unit in the DXU to the TRUs.
TLS
Terrestrial Link Supervision
TM
Transport Module
The Transport module is non-RBS equipment belonging
to the transport network.
TMA Tower Mounted Amplifier
There are three types of TMAs: dTMA, rTMA and
ddTMA. ⇒ dTMA ⇒ rTMA ⇒ ddTMA
TMA-CM
Tower Mounted Amplifier – Control Module
TN
Time slot Number
TN O&M
Transport Network Operation and Maintenance (in
general)
Tora ASIC in the TRU
21 (24)
EN/LZT 720 0283 Uen R1B