P25 TDMA

[robertsdoug]

I am familiar with DMR having two timeslots in TDMA. But what about P25 P2? Is it the same two timeslots, so by enabling it on a network effectively double the capacity?

 

[GTR8000]

P25 Phase II is 2-slot TDMA, similar to DMR. In fact, they both use the same vocoder, DVSI's AMBE+2

 

[YL3IM]

P25 TDMA (Phase 2) is trunking only.

 

[robertsdoug]

P25 TDMA (Phase 2) is trunking only.

True

 

[N4DES]

Technically yes it does double the system capacity when it's calculated against the same system deployed with the same number of physical channels and programmed as FDMA.

 

[Project25_MASTR]

Doesn't double the capacity per say...since Phase 2 is a trunked environment only and every additional talk path you add effectively doubles your call handling capacity, it's an exponential increase you your capacity. Now there are some other caveats such as you can have a FDMA system built to the manufacturers talk path handling capacity in which scenario enabling TDMA doesn't actually provide any true benefit unless you split your existing site into a dual layered configuration which means you are also doubling down on site controllers and networking hardware so there's a much larger expense to that compared to simply keeping a FDMA site operational.