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Chapter 10, TIA/EIA-136 Basics
Basic Functions of the DCCH in TIA/EIA-136
TIA/EIAa TIA/EIA-136 Basics
Mobile Assisted
Channel
Allocation(MACA)
The mobile can assist the base in selecting control channels by the MACA
procedure. This procedure measures and reports signal quality for either the
current channel or multiple channels. There are two types of measurements: long
term and short term.
Long term measures WER, BER, and paging frame received signal strength. It
measures only on the current control channel.
Short term measures short term received signal strength. It can measure up to 16
control channels.
Dual Tone Multi-
Frequency
Signaling (DTMF)
This is an option built into TIA/EIA-136. This enables testing of the numeric
keypad (digits 0-9, and * and #). Each key is identified by two signals. These
signals are transmitted together whenever the key is pressed. The keys and their
respective frequencies are identified below.
Table 9
Label of Key Assigned Frequencies (Hz)
1 697 1209
2 ABC 697 1336
3 DEF 697 1477
4 GHI 770 1209
5 JKL 770 1336
6 MNO 770 1477
7 PRS 852 1209
8 TUV 852 1336
9 WXY 852 1477
* 941 1209
0 OPER 941 1336
# 941 1477