On Oct 29, 2015 6:47 AM, "Steve N4IRS" <szingman@msgstor.com> wrote:

When we did the DMR to AllStar testing, we used the NW Digital Radio DV3000. It was mounted on a RPi2 running asterisk.
The DV3000 uses AMBE-3000 vocoder chip from DVSI. We tested with Mototrbo and D-Star. Did not have a Fusion or P25 radios.

73, Steve N4IRS

On 10/29/2015 8:03 AM, David McGough wrote:

Guys,

I haven't looked carefully as to which variants of AMBE are in use by
D-STAR, Fusion, etc...Doesn't the original AMBE patent expire fairly soon?

The reason I'm asking is that I know there are some fledgling open-source
AMBE implementations out there.  A couple years ago I hacked CODEC2 into
Asterisk for experimentation, thinking about directly linking to HF via
the FreeDV project--and, not wanting to transcode from one low-bandwidth
CODEC to another, making truly awful audio!

After playing with it a few weeks, I didn't do much more...(I've still
got that code and it still works, if anyone wants to play with it?)

...Just wondering.

73, David KB4FXC


On Thu, 29 Oct 2015, Matthew Pitts wrote:

Mike,

You are correct in the statement that the DV4mini needs additional

hardware to handle the transcoding from a digital radio. Once I get my
nodes back up on my Raspberry Pi, I will work on an updated version of
the D-STAR channel driver that supports DMR and Fusion AMBE encoding and
decoding as well as radio control functionality for the DV4mini.

Matthew Pitts
N8OHU

On October 28, 2015 6:18:34 PM EDT, Mike Zingman <mike.zingman@gmail.com> wrote:

Actually the DV4Mini alone does not help tie Allstar into Wires-X.  In
order to do that one must:

1) Have an interface to the YSF network protocol
2) Decode and extract the AMBE frames from the streamed protocol
3) Transcode the frames to PCM at the proper sample rate using the DVSI
AMBE3000 chipset
4) Send those frames to something like the already created USRP channel
driver

In reverse, 4, 3, 2, 1 to send data back to the YSF network.  In
addition
to the simple outline above, you would want to
a) Add audio filtering/shaping to make the AMBE audio more acceptable
to
what we are used to on Allstar (one of the single greatest aspects of
Allstar is the audio quality)
b) Transfer of as much metadata between the networks as possible

The DV4Mini is a radio module + digital modulator (DStar/DMR/YSF).  It
has
no AMBE encode/decode hardware so there is no way to transcode the
audio
content.  For that a "ThumbDV" or a DV3000 would be the hardware of
choice.  The DV4Mini could be used as a user radio on an existing RF
network, but one would still need the AMBE3K to do the transcode.

Mike


On Wed, Oct 28, 2015 at 5:48 PM, Neil k8it <k8it@cac.net> wrote:

I have been waiting a bit before I start playing with DIAL on a RPI2.
I still have two questions
1. Does the RPI2 DIAL  version solve the tx echo buffer issue that

the

current version of Asterisk RPI2 code has. The fix to this issue

seems to

be taking a long time.
2. Some users have reorted that a lot of modules have been disabled,

such

as the Echolink channel driver and others.
3. With the new Mini-DV4  dongle $125  and the amount of capability,

has

anybody wrote a channel driver to tie the Yaesu Fusion Wires-X

network into

DIAL. It appears that most of the documentation is out there, we just

need

someone to write the channel driver


Thanks
73 Neil Sablatzky  K8IT
Allstar Node 41838 KITLINK
Allstar Node 42087 KITLINK HUB
IRLP Node exp0068
Echolink K8IT-L
WIRES-X K8IT 11479 Room 21479

*From:* Steve N4IRS <szingman@msgstor.com>
*Sent:* Tuesday, October 27, 2015 10:35 AM
*To:* N7MTC . <n7mtc@outlook.com> ; app_rpt-users@ohnosec.org
*Subject:* Re: [App_rpt-users] Procedure for loading DIAL on a R-Pi2

or a

PC

Mac,
The RPi2 install is pretty much download the image, burn it to SD

card,.

Once the Pi boots, you can login on the HDMI / USB console, or SSH

into

the board on port 222.
The board is setup for DHCP so check your DHCP (router) server for

address.

If you want, you can login via the built in serial port at 115,200
System will walk you through setup.

FAQ for DIAL is at:
<http://docs.allstarlink.org/drupal/node/170>
<http://docs.allstarlink.org/drupal/node/170%3E>

73, Steve N4IRS


On 10/27/2015 10:20 AM, N7MTC . wrote:

Is there a procedure for loading the "new" DIAL version of asterisk

for

Raspberry pi2?



I am looking to connect either a Pi2 or an intel NUC to a Yaesu Dr-1x
using the Arcom RC-210 and  the Arcom ADR.  I noticed DIAL has

replaced

ACID as the latest flavor of asterisk for both PC and PI2.  I have

not

found any install write-ups or YouTubes showing a DIAL install.



Regardless of which platform I will need to use an USB to Serial

adapter

to connect the ALLSTAR node to the repeater controller.  It will be

of

the FTDI chipset either a trendnet Tu-s9 or a GearMo USB RS-232.





/73

Mac, N7MTC





Benjamin Franklin - "Those who surrender freedom for security will

not

have, nor do they deserve, either one."



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