Phase 2 Voice Capable |
(Trunking System, ASTRO 25) |
Enables the radio to transmit on a Trunking
System that supports Project 25-standard
Phase 2 TDMA (Time Division Multiple Access) voice communications. 
Phase 2 TDMA uses a
two-slot TDMA protocol on a 12.5 kHz channel, which allows double the
voice capacity compared to the Phase 1 FDMA (Frequency Division Multiple
Access) implementation (see also
X2 Voice Capable). This selection applies
for the current Trunking System.
When the System Type field is set to "ASTRO 25", and
when the radio is model / option capable.
