I've actually spoken with Travis, KJ4NDP, a few times via his linked interconnect; I was surprised how good it sounded, since there are differences in the AMBE vocoder used in D-STAR and DMR. Even using a DV-Dongle at his end, there didn't seem to be any audio artifacts that I could hear.

Matthew Pitts
N8OHU

On October 25, 2014 9:59:33 AM EST, Tim Sawyer <tim.sawyer@mac.com> wrote:
A search for "app_rpt dmr” turned up this interesting document (among others) http://www.qsl.net/kb9mwr/projects/voip/plan.html

--
Tim WD6AWP

On Oct 24, 2014, at 9:35 PM, Doug Crompton <doug@crompton.com> wrote:

I searched on this and see...


K1IF k1if at k1if.com 
Fri Jan 31 12:28:14 EST 2014
Travis KJ4NDP has successfully connected his DMR radio to asterisk by
utilizing the dstar channel driver in asterisk created by Scott Lawson
ki4lkf.

Two other messages followed asking for a url or more info with apparently no response??


73 Doug
WA3DSP
http://www.crompton.com/hamradio


From: mike@midnighteng.com
To: app_rpt-users@ohnosec.org
Date: Fri, 24 Oct 2014 21:10:10 -0700
Subject: Re: [App_rpt-users] app_rpt mototrbo/DMR


Do your search but the folks doing it normally refer to it as DMR (aka).

Someone has created a DMR driver for use in app_rpt using a dstar channel driver.

I think that info will lead you in the right direction.

...mike/kb8jnm

-------- Original Message --------
Subject: Re: [App_rpt-users] app_rpt
From: Tim Sawyer <tim.sawyer@mac.com>
Date: Fri, October 24, 2014 11:24 pm
To: Chris Davies <chris.davies@globalviewsystems.co.uk>
Cc: app_rpt-users@ohnosec.org

There has been some info on this list for SIP connections to app_rpt. Do a Google search like so "site:ohnosec.organd inurl:app_rpt-users sip” and see what turns up. Never seen anything on Mototrbo. 
--
Tim WD6AWP

On Oct 24, 2014, at 8:41 AM, Chris Davies <chris.davies@globalviewsystems.co.uk> wrote:

Has anyone had any joy connecting app_rpt and Mototrbo into another Sip based PBX?
 
 
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--
Tim WD6AWP
 


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Matthew Pitts
N8OHU