MotoTRBO IP?

SKYNET156 · #1 (**permalink**) 10-21-2009, 12:35 AM

I was reading up on TRBO tonight and i have a few questions about IP Based solutions,

1. As with either a trunked or conventional system, you need numerous repeaters in a city to stay connected,
With TRBO IP, does this decrease the number or towers you need to install/rent?

2. With TRBO IP, can you stay connected over IP in conventional and trunked modes?

3. How many TRBO IP Repeaters are required for a trunking system that holds about 40-50 talkgroups?

Any answers would help.

N_Jay · #2 (**permalink**) 10-21-2009, 07:31 AM

1. Nope, coverage is coverage.
IP Site Connect is just a linking system.

2. I don't think IP Site Connect is compatible with Capacity Plus (MotoTRBO Trunking)

3. It would depend on their loading. Old rule of thumb is one talk-path per 70 to 100 units.

SKYNET156 · #3 (**permalink**) 10-21-2009, 01:38 PM

So, does this work in the form of ROIP?, From what i understand (and it's not much) is that you need limited sites to connect over a more broad network over IP,
I am speaking in terms of this for example,

If i had a business, and we had an office in albany, and an office in manhattan, and an office in new haven, ct, how would IP solutions go to work for me on the TRBO network?
Would i need a million and 1 repeater sites?

From what i understand is that you do not need as many tower sites or repeaters to connect over IP, thus making a computer/voice/data/ROIP coverage area that conventional Repeaters can not cover,

Maybe i am misunderstanding IP Solutions on TRBO,

Any advice is appreciated

littona · #4 (**permalink**) 10-21-2009, 05:34 PM

Think of Radio over IP as a connectivity solution. The Internet is providing a connecting between repeater sites, in this case. For your example, you'd connect your repeaters in Albany, Manhattan, and New Haven together via the Internet. As someone said elsewhere here, "coverage is coverage". Depending on the coverage you need in Albany, you'd need more than one repeater. Same with the other sites. All Radio over IP provides (in the basic sense) is a more cost-effective way to connect your sites together, as opposed to frame relay or microwave circuits.

Where the IP part gets juicy, is when you use it to connect your laptop or dispatch console to the radio network. Then you can talk through your computer in Manhattan to a portable radio in Albany.

KB9LIQ · #5 (**permalink**) 10-21-2009, 05:54 PM

I don't think they have the trunking TRBO out yet

N_Jay · #6 (**permalink**) 10-21-2009, 06:41 PM

Quote:

Originally Posted by KB9LIQ

I don't think they have the trunking TRBO out yet

Yes they do.

SKYNET156 · #7 (**permalink**) 10-21-2009, 06:55 PM

ok, i am starting to get it, but correct me if im wrong, would this TRBO application support Trunking over IP, or only Conventional TRBO over IP?

N_Jay · #8 (**permalink**) 10-21-2009, 11:22 PM

Quote:

Originally Posted by SKYNET156

So, does this work in the form of ROIP?, From what i understand (and it's not much) is that you need limited sites to connect over a more broad network over IP,
I am speaking in terms of this for example,

If i had a business, and we had an office in albany, and an office in manhattan, and an office in new haven, ct, how would IP solutions go to work for me on the TRBO network?
Would i need a million and 1 repeater sites?

From what i understand is that you do not need as many tower sites or repeaters to connect over IP, thus making a computer/voice/data/ROIP coverage area that conventional Repeaters can not cover,

Maybe i am misunderstanding IP Solutions on TRBO,

Any advice is appreciated

You need sites where you want coverage.

You don't need sites where you don't need coverage.

The IP just links the sites, as if they are patched together,

N_Jay · #9 (**permalink**) 10-21-2009, 11:35 PM

Quote:

Originally Posted by SKYNET156

ok, i am starting to get it, but correct me if im wrong, would this TRBO application support Trunking over IP, or only Conventional TRBO over IP?

Motorola has released Conventional Site Connect, and Capacity Plus Trunking, they have not released the combination of the two.

Wyandotte · #10 (**permalink**) 10-22-2009, 07:31 PM

Quote:

Originally Posted by SKYNET156

ok, i am starting to get it, but correct me if im wrong, would this TRBO application support Trunking over IP, or only Conventional TRBO over IP?

Any two (or more) radios will work. I've used IP modems made by Telex/Vega to link Motorola CDM1250's together. This is conventional, not trunking, Just two mobiles on power supplies on either end of an I/P link, one hearing everything the other hears. So a couple of MotoTrbo or APCO-25 or OpenSky mobiles or whatever should work exactly the same way. I'm honestly not sure how a trunking system would play thru these modems I'm using.

Before you consider MotoTrbo, take a listen to the different audio sample files on the below link. As far as I'm concerned, MotoTrbo sounds horrible, at least in these audio files.

W2SJW - Radio Sounds

N_Jay · #11 (**permalink**) 10-22-2009, 10:34 PM

MP3 recompressed audio from a high compression vocoder will always sound worse.

The vega stuff is interesting, but most people tie together base stations or control stations.

The MotoTRBO IP Connect links repeaters and carries the features across with no loss of quality.

WB0VHB · #12 (**permalink**) 10-30-2009, 05:33 PM

I have a Mototrbo repeater in SE Iowa on 444.350 that has an IP Connect set up with 5 other digital repeaters in California and one in Washington.

Audio is very good and it is nice to drive the entire coverage area of the repeater with outstanding audio quality and no noise or static. I'm currently working on interconnecting a digital radio to my analog 2 meter repeater to expose more people to what digital radio can do.

Randy