Amps-Tacs, Namps-Ntacs Decoder; Decoder Mode Differences - HP 8920A User Manual

AMPS-TACS, NAMPS-NTACS Decoder

Decoder Mode Differences

Figure 69 AMPS-TACS Control/Voice and NAMPS/NTACS Control Channel Decoder
The AMPS-TACS, NAMPS-NTACS decoder acts like a base station receiver by
analyzing Reverse Control Channel (RECC) and Reverse Voice Channel (RVC)
message streams for various cellular telephone formats.
The decoder can also be used to analyze Forward Control Channel (FOCC) and
Forward Voice Channel (FVC) data from the base station.
The AMPS-TACS and NAMPS-NTACS Decoder modes are essentially the same
for analyzing Reverse Control Channel (RECC) information. However, the Voice
Channel (RVC) information for NAMPS-NTACS is displayed differently than
AMPS-TACS information. Fields and decoder measurements that are only used
for either mode are noted in their descriptions.
Chapter 8, Signaling Decoder Screen
AMPS-TACS, NAMPS-NTACS Decoder
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