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

[Bryan Fields]

On 1/20/15, 1:30 PM, Cole Cunningham wrote:
> We’re 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 we’re using modified fobs running on USB
> 2.0 ports and when we try to use more than four, things break up, sound bad,
> etc.  I’ve found that CentOS 5 that comes on the ACID disk doesn’t support USB
> 3.0, which we were thinking might offer more bandwidth and handle the added fobs.

The usb2 devices on the usb3 bus will slow the bus to usb2 speeds (assuming
it's the first connected device, no way to control this upon cold boot).  So
you'll not gain much.

If you have squelch/COR control in the radios, two of the quad pci cards would
work well.  You can still find motherboards with pci slots, or use a converter
to pcie. The cards are under $75/port, it's hard to go wrong with this.

The other option if you don't have squelch is RTCM's all feeding over IP to
the server.  That way the server would not need anything special (other than a
multi-core cpu)

The USB FOB's are nice, but they don't scale nicely (IMO).

As to getting the Allstar version of asterisk working on a newer distro, I
believe all you need to do for this is use dahdi and the dahdi patches and
then compile from source.  I have it running under debian squeeze with out
dahdi, but I plan to build another box running wheezy and try the dahdi
patches.  Can anyone correct me if I'm wrong (or a +1 if I'm right) about this?


-- 
Bryan Fields

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