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Goodbye MGEG; HELLO 100% VoIP!

This forum is for discussions regarding System Infrastructure and Related Equipment. This includes but is not limited to repeaters, base stations, consoles, voters, Voice over IP, system design and implementation, and other related topics.

Moderator: Queue Moderator

Posts: 1794
Joined: Tue Nov 05, 2002 12:32 am

Goodbye MGEG; HELLO 100% VoIP!

Postby ASTROMODAT » Sun Nov 30, 2003 3:21 pm

Motorola’s current architecture utilizes IP addressing that ends at so-called “gateways,” with channel banks carrying audio to the Quantar. The console equipment is interfaced to the packet network(s) through the Motorola Gold Elite Gateway (MGEG). The MGEG fills the role currently performed by digital interface units (DIU3000), which provides A/D and D/A audio conversion, plus encryption and decryption (on a per-channel basis). Motorola plans to integrate vocoding and encryption functionality into its PC-based “Platinum Series” IP consoles to provide true, end-to-end transcoding (e.g., vocoding from analog to digital at the source end, and then back to analog at the reproduction end, with 100% digital in-between the Start and Stop points). The Platinum Series IP consoles will also provide encryption/decryption functionality. This approach will completely eliminate the need for many costly elements, such as the Ambassador Electronics Bank (AEB), the central electronics bank (CEB), the MGEG, and channel banks. Implementation of IP-based consoles would move transcoding and encryption functionality into the console, eliminating the need for DIU3000’s.

Assuming this is how things actually unfold, I have 2 questions for any Batlaber(s) that may know:

1) Does anyone have a sense of the timing on this new Motorola architecture?

2) In the interim, has anyone heard if there might be a (Motorola or Third Party) “black box” that could connect to the Communications Port on the back of the DIU3000 so that TX and RX audio could stay in digital form (and only go analog at the source and ultimate termination), plus you have digital PTT data.

The problem we are finding in interfacing 2 distant Quantars over the Internet with the DVSI Net2000 product is twofold: It introduces an additional pair of A/D and D/A conversions at each Quantar, and it is very clumsy to try to implement PTT when you have two Quantars tied together.

Just curious if anyone might have any insight(s) on this.


Posts: 31
Joined: Wed Mar 19, 2003 4:45 am

Voip P25

Postby radiomidwest » Thu Dec 04, 2003 4:47 am

When are we going to see the ability to easily connect:
X,Y,Z brand P25 consoles talk to each other
X,Y,Z brand P25 controllers talk to each other
X,Y,Z brand P25 base/repeaters talk to each other
Simple Voip
Open protocol

I don't think that is too much to ask, do you? Doesn't the TETRA system do all this?

Posts: 195
Joined: Wed Feb 26, 2003 9:11 pm
Location: Australia

Postby Sundown » Thu Dec 04, 2003 7:28 am

I've kind of got the startings of this, given there didn't seem to be much out there yet. Don't profess for it to become the standard by any means, but I want something that can connect all those bits together with IP.

In very early stages though..

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