[arm-allstar] Raspberry pi 3 as HUB server

[Doug Crompton]

Jan,

 You have it right. Just one correction. A hub is a very loose definition. It can have a radio connected but in most cases it probably would be desirable not to.

A and B TX audio.  Well the FOB is two channel output but since Allstar is mono audio both channels are the same. Some people use the second channel to drive an amplifier for monitoring. Obviously you could tee off of just one channel to do that but this but using a separate channel you would not have to worry about loading and you would have a separate level control.
You do not waste my time. We are here to help.

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


From: jan at vdv.co.za
To: arm-allstar at hamvoip.org
CC: doug at crompton.com
Subject: RE: [arm-allstar] Raspberry pi 3 as HUB server
Date: Fri, 1 Jul 2016 22:18:49 +0200

Dear Doug Thank you for this good answer. I have a few more questions, but I do not want to waste your time. I have worked before with a few asterisk servers. I think I understand how allstar “bolts” on to it. So every PI will be a server.  On a server you can have node/s (extentions).   A hub is a server with a node on it, but no radio connected to the node.  To be used as n “reflector”. All register with register.allstar.org.  By not reporting your server/nodes to stats.allstar will not make it public. For the links/calls every server connect directly to each other for data. I cannot wait for my usb sound cards arrive to give them a mod.  I’m thinking to do  http://www.crompton.com/hamradio/usb_fob_modification/usbfob_interface.pdf Just one question, why is there a TX Audio A and B?  What is the use for this? Kind Regards Jan van der Vyverjan at vdv.co.zaZS1VDVskype:jvdvyver From: arm-allstar [mailto:arm-allstar-bounces at hamvoip.org] On Behalf Of Doug Crompton via arm-allstar
Sent: 01 July 2016 05:07 PM
To: ARM Allstar
Cc: Doug Crompton
Subject: Re: [arm-allstar] Raspberry pi 3 as HUB server Jan,

One of the hardest things for newcomers to understand with Allstar is the server/node concept. 

Every PC, Beaglebone Black, Raspberry Pi, etc. is a physical server. A server can have multiple nodes. Servers are setup on paper at allstarlink.org and then nodes are requested and assigned to that server. 

At your end you setup the physical server and nodes. You could have multiple servers (computers) each with multiple nodes although it is recommended not to have more than two on a small board.

So nodes require servers to reside on and the map of your servers and nodes is stored on paper at allstarlink.org. This defines your local physical nodes.

There is no real definition for a hub but I suppose you could call any one node with more than one remote node connected to it a hub. A hub often does not but could have a radio directly connected.

There are many using what we call private nodes to connect repeater links or just dedicated communications. If you don't advertise your node to the Allstar status server it essentially would be private but you could go a step further and not register with Allstar at all and setup routing to directly connect two or more nodes. 

I run a "hub" without a radio connection that often has 25 or more nodes connected on an Odroid C3 board. It is also running Echolink and sending all audio traffic to Broadcastify. There is no reason why this would not work on a Raspberry Pi especially a model 3. The number of connections on a hub is more a matter of your Internet bandwidth then the computer it is running on.   

All images at hamvoip.org support all aspects of  basic "Acid" Allstar with additional features. The V1.02 is the latest version which supports both the Pi 2 and 3. V1.02 is the first beta for V2.0. It has some additional features that will be included in our V2.0 release. We are making so many changes and updates that there will probably be additional V1.xx beta versions before the V2.0 release.

I hope that answers your questions but if not please ask again.

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

To: arm-allstar at hamvoip.org
Date: Fri, 1 Jul 2016 09:00:38 +0200
Subject: [arm-allstar] Raspberry pi 3 as HUB server
From: arm-allstar at hamvoip.org
CC: jan at vdv.co.zaHi I am new to Allstar. I want to setup a permanent link between two repeaters. From what I understand I need a Server and 2 Nodes. Question 1:Is a server = hub? Question 2:Can I run a server or hub on a raspberry pi 2, ifso how many connections is it good enough for? Question 3:Can I run a server and a node on the same raspberry PI Question 4:Does the images on http://hamvoip.org/RPi2/ support running a server or just nodes? Kind Regards Jan van der VyverZS1VDV
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