BudTurpa
Member
Here on RR I notice that some P25 systems have talkgroups coded as "TDMA Capable Talkgroup". I get the gist that Phase II implementations are FDMA with the ability to do TDMA. Is that loosely correct?
- When talkgroups are a "TDMA Capable Talkgroup" when is TDMA used? Is it dynamic, FDMA at one moment and TDMA another moment, based on the ability of affiliated radios? Is it statically set by the admin, 100% FDMA today but could be switched to 100% TDMA in the future when all equipment is able?
- In a Phase II capable TG is "dispatch" always in FDMA to be compatible with any radio at any time?
- Do larger scale Phase II networks that are TDMA only (no possible FDMA functionality) exist?
I realize using a trunking scanner to monitor a system in vicinity could give insight to some of these questions, I am curious in a more general sense on how P25 is implemented.
Thanks!
- When talkgroups are a "TDMA Capable Talkgroup" when is TDMA used? Is it dynamic, FDMA at one moment and TDMA another moment, based on the ability of affiliated radios? Is it statically set by the admin, 100% FDMA today but could be switched to 100% TDMA in the future when all equipment is able?
- In a Phase II capable TG is "dispatch" always in FDMA to be compatible with any radio at any time?
- Do larger scale Phase II networks that are TDMA only (no possible FDMA functionality) exist?
I realize using a trunking scanner to monitor a system in vicinity could give insight to some of these questions, I am curious in a more general sense on how P25 is implemented.
Thanks!