compare Motorola SmartZone and TETRA technology

[htungvn]

I read SmartZone and TETRA technology.But in fact,i cann't distinguish Smartzone from Tetra technology.So,pls help me compare them

[Comint]

Originally Posted by htungvn

I read SmartZone and TETRA technology.But in fact,i cann't distinguish Smartzone from Tetra technology.So,pls help me compare them

I recommend you read more carefully.

For starters, SmartZone is Analog FM. TETRA is Digital 4 slot TDMA.

--
Comint

[greenthumb]

They are both wide area communications systems supporting user mobility, but aside from that there are a lot of differences. There is a lot of literature available on the internet, and even from some online book stores, which can fill you in on TETRA.

[htungvn]

Thanks for answer my questions. I'm agree that the TETRA Technican is more advantage than SmartZone.Because Smartzone seem Analog and TETRA is Digital. But why has Smartzone still used in America and Motorola still have a plan to upgrade Smartzone to Type 2 ?

[wlmr]

You're reading old info if you are reading about Smartzone being upgraded to Type II. Happened quite a while ago. If you're wanting to compare digital trunking technologies I'd recommend reading up on P25, also known as Project 25 digital. Motorola's version is known as Astro 25.

[kayn1n32008]

edit. please delete my post

[jsharp2316]

TETRA is not due to be phased out in a few years if you don't upgrade for near the original cost of the system. Seriously, Smart Zone is a proprietary Motorola protocol using a analog control channel. I beleive the latter versions like EDACS provoice will allow digital voice calls. While TETRA is the WW standard for digital public safety radio with 4 voice paths in 25 KHz and includes standards on broadband and other public safety data requirements. TETRA is a Open standard outside the US because of Motorola IP issues. Go back and re-read the descriptions.

[kayn1n32008]

Originally Posted by jsharp2316

TETRA is not due to be phased out in a few years if you don't upgrade for near the original cost of the system. Seriously, Smart Zone is a proprietary Motorola protocol using a analog control channel. I beleive the latter versions like EDACS provoice will allow digital voice calls. While TETRA is the WW standard for digital public safety radio with 4 voice paths in 25 KHz and includes standards on broadband and other public safety data requirements. TETRA is a Open standard outside the US because of Motorola IP issues. Go back and re-read the descriptions.

They are really more different than they are alike. TETRA is a cellular like approach (lowpower handhelds lots of small 'cells' ) where SmartZone uses alot more power with less towers for coverage.

SmartZone will allow digital voice but the control channel is still analog where P25 is digital all around as is TETRA