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Chapter 10, Signaling Encoder (AF Generator 2)
AMPS-TACS NAMPS-NTACS Encoder
AMPS-TACS NAMPS-NTACS Encoder
• AMPS = Advanced Mobile Phone Service.
• NAMPS = Narrowband Advanced Mobile Phone Service.
• TACS = Total Access Communications Systems.
• JTACS = Total Access Communications System for Japan.
• NTACS = Narrowband Total Access Communications Systems (NTACS is an exten-
sion of JTACS).
The AMPS/TACS and NAMPS/NTACS Encoder modes use the same Forward
Control Channel (FOCC) settings and output format. However, the Forward
Voice Channel (FVC) information is different.
Control and Voice Channel Identifiers
The Control and Voice channel fields are available in separate menus. The
Channel field is used to select the Cntl (FOCC) or Voice (FVC) menu.
Fields available only in the Forward Control Channel menu have (FOCC) printed
in the field title.
Fields available only in the Forward Voice Channel menu have (FVC) printed in
the field title.
Figure 85 AMPS-TACS/NAMPS-NTACS Mode Forward Control Channel (FOCC)
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