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S:\HP83206A\USRGUIDE\MANUAL\is136bas.fm
Chapter 10, TIA/EIA-136 Basics
What is TIA/EIA-136?
What is TIA/EIA-136?
TIA/EIA-136 is a mobile communications system standard which extends the
functions of the dual-mode system standard TIA/EIA-627. TIA/EIA-627 is also
known as NADC/TDMA (North American Dual Mode Cellular/Time Division
Multiple Access).
NADC/TDMA is a dual mode, full duplex cellular communications system in
which each voice channel can be defined by both a frequency and a time slot. In
earlier cellular communication systems the voice channel was defined only by a
frequency. By sharing one transmission frequency, more calls can be transmitted.
The dual mode system uses a digital traffic channel (DTC) or an analog voice
channel (AVC).The dual mode system uses only an Analog Control channel to
control transmissions on the voice and traffic channels. TIA/EIA-136 has the
DTC, AVC, ACC, and adds a Digital Control Channel (DCCH).
TIA/EIA-136 expands the capability of the TIA/EIA-627 system to include:
• Sleep mode for decreased battery usage during non-talking time
• Public, private, and semiprivate cells such as picocells in office buildings and personal
base stations
• Short Message Service (SMS) for both point-to-point and broadcast information
• Greatly improved security (using DCCH and authentication)
• Improved voice quality