[App_rpt-users] More than 4 nodes on a PC

[Keith Goobie]

We have an asterisk node that runs three USB URI devices and it works well.
Getting there was an education.  We found that we needed to spread out our
USB devices amongst as many Bus¹ as you can.  Loading down a single bus will
create breaks in the sound.  If you want things to work better add USB 2.0
sound cards to increase the USB bus count.  Use the lsusb command to see how
things are placed.  Below is our layout.

As you found out, ACID is based on Centos 5.x which does not work with USB
3.0.  

We still use a blend of RLC-DSP404¹s and Allstar.  If you are making the
move to a PC-Linux solution, I suggest investment in SSD, UPS for AC, and a
remotely controlled AC/DC power switch to control the computer.

Thinking along the lines of your BBB solution, you could probably do things
with two PC-Linux servers.

Cheers
Keith VA3YC



[root at allstar ~]# lsusb
Bus 002 Device 001: ID 0000:0000
Bus 002 Device 003: ID 0d8c:013a C-Media Electronics, Inc.
Bus 002 Device 002: ID 0d8c:013a C-Media Electronics, Inc.
Bus 001 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 003 Device 002: ID 0d8c:013a C-Media Electronics, Inc.
Bus 003 Device 003: ID 04b3:4001 IBM Corp.

On 1/20/15 1:30 PM, "Cole Cunningham" <colecaz at gmail.com> wrote:

> We¹re looking at app_rpt for sites with up to eight radios, all currently
> controlled by a RLC-3.  Our initial approach is to use a PC and try to run all
> eight radios off of it.  For testing we¹re using modified fobs running on USB
> 2.0 ports and when we try to use more than four, things break up, sound bad,
> etc.  I¹ve found that CentOS 5 that comes on the ACID disk doesn¹t support USB
> 3.0, which we were thinking might offer more bandwidth and handle the added
> fobs.
>  
> Has anyone used this PC based approach for 4+ nodes using USB fobs?  Or could
> I get some suggestions as to how to approach the implementation of eight nodes
> without using fobs or the discontinued 4 port PC card?
>  
> Or is it a viable solution to use a BBB for every radio and connect them all
> with Ethernet switches and treat each BBB like a separate server.
>  
> Any ideas are appreciated
>  
> Cole
> AA7RD
> 
> 
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-- 
keith at goobie.org
Keith Goobie
Richmond Hill, ON, CANADA

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