Superb potential! Re: UmTRXv2 Beta: Whats the maximum # of simultaneous callers

SoftwareRadioGuy softwaredefinesradio at
Tue Oct 30 09:35:57 UTC 2012


Superb potential of the device you and the Fairwaves team are bringing to

I also look forward to your future potential product, UmTRXv3 4G/LTE.

I know its just something your team and you have thought about publically,
alot of us would love to see such.

Thank you for your responses.


On Tue, Oct 30, 2012 at 5:07 AM, Alexander Chemeris <
alexander.chemeris at> wrote:

> Hi,
> On Tue, Oct 30, 2012 at 12:36 PM, SoftwareRadioGuy
> <softwaredefinesradio at> wrote:
> > I've read that the # of maximum callers is 15.
> >
> > Since there are "Beta" version coming out will these be able to handle 15
> > simultaneous callers too?
> A short answer is "yes, after a software update".
> A longer answer is that hardware supports dual-TRX operation, but
> software support is not there yet. We might be able to fix software
> before we ship beta units, but even if not - you will be able to get
> the software update later.
> Also keep in mind, that UmTRX should be able to run multi-ARFCN
> OpenBTS and in this case it'll be able to handle much more calls. We
> haven't tested this mode of operation extensively yet, but
> theoretically we might be able to support 14ARFCNs (2x7ARFCN) which
> equals to (14*8-1)=111 calls. At this scale you're most likely limited
> by computing power of your PC rather then UmTRX hardware. Whether we
> could get UmTRX in Multi-ARFCN mode through certification or not is
> still a question, but it should be fine for lab testing.
> --
> Regards,
> Alexander Chemeris.
> CEO, Fairwaves LLC / ООО УмРадио
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