SDS 100/200 P25-P2 system NAC - How can I program it?

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RRR

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When I am scanning a programmed P25 system, the NAC flashes across the scanner, like it found it while scanning/searching. I have the system NAC, but I can't find out how to program it in (P25-Phase2 system)

Any ideas?
 

eaf1956

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The site menu.
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RRR

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Nope. It's not there, when you program a system as a "P25 TDMA trunked" system. All of those options are there as you've shown, except for "Set P25 NAC option" ....For a single freq. P25, it is right there.
 

RRR

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Did that also, it is not found in the menu. (SDS100) I can edit Site NAC on conventional P25, but not on P25 TDMA (phase 2)

???
 

maus92

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Nope. It's not there, when you program a system as a "P25 TDMA trunked" system. All of those options are there as you've shown, except for "Set P25 NAC option" ....For a single freq. P25, it is right there.
It is on my SDS100 when I edit our statewide multi-site P25 P2 TDMA system:

Go to Menu Page
Manage Favorites
Select Favorites
Review/Edit System
Select System
Edit Site
Select Site
Set P25 NAC Option
Set P25 NAC
Input P25 NAC
 
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GTR8000

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Nope. It's not there, when you program a system as a "P25 TDMA trunked" system. All of those options are there as you've shown, except for "Set P25 NAC option" ....For a single freq. P25, it is right there.
Sounds like you're programming the system as P25 X2-TDMA instead of P25 Trunk. They are not the same, and you should not be using P25 X2-TDMA. Phase II systems should be programmed as P25 Trunk.
 
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RRR

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I didn't realize that. ....It sure works well on "P25 X2 TDMA" (Harris Phase 2 system)

I will change that, thank you.

So what is "P25 X2 TDMA" for?
 

maus92

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I didn't realize that. ....It sure works well on "P25 X2 TDMA" (Harris Phase 2 system)

I will change that, thank you.

So what is "P25 X2 TDMA" for?
That was a Motorola implementation of P25 TDMA before the Phase 2 standard was finalized. The county to the west of mine was one of the first 700 TDMA systems to come online, and used the X2 TDMA protocol.
 

GTR8000

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X2-TDMA was Motorola's proprietary implementation of P25 TDMA, which was developed prior to the official APCO P25 Phase II standard (adopted late 2010). There were only a handful of Motorola X2-TDMA systems, Motorola stopped shipping them in 2011, and all but maybe one or two oddballs have been converted to Phase II by now.

The reason it might work fine is because X2-TDMA was backwards compatible with Phase I FDMA, and so those FDMA voice calls would've gotten through the scanner just fine.
 
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RRR

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Interesting.....

I have some reprogramming to do.....
 

GTR8000

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Interesting.....

I have some reprogramming to do.....
Make sure that none of your P25 trunked systems are programmed as X2-TDMA; they should all be programmed as P25 Trunk. That is the correct system type for both Phase I and Phase II systems.
 
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eaf1956

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Make sure that none of your P25 trunked systems are programmed as X2-TDMA; they should all be programmed as P25 Trunk. That is the correct system type for both Phase I and Phase II systems.
I had forgotten all about p2 tdma and I didn't even notice he was using that outdated mode.

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RadioSc

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X2-TDMA is butter scotch to the interoperability system. My state uses the interoperability system from another state. So citizens in my state wouldn't be able to pick up with and out of the box scanner.

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eaf1956

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X2-TDMA is butter scotch to the interoperability system. My state uses the interoperability system from another state. So citizens in my state wouldn't be able to pick up with and out of the box scanner.

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X2 TDMA can be monitored with out of the box scanners. Interesting that they would use an obsolete mode for so called interoperability. Sound more like they wanted their own Barney Fife system.

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RRR

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Ok, thanks for y'alls help. I just manually reprogrammed the sys. (and all the TG's, ID's, etc.) and am waiting for traffic....
 

RadioSc

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Ok, thanks for y'alls help. I just manually reprogrammed the sys. (and all the TG's, ID's, etc.) and am waiting for traffic....
It didn't take you long right? Since it has the zip code and load function. Taking home patrol scanner to the next level

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