ok I got it... It has to be a combination of NumC7s and NumC1s per ARFCN. OK good...



On Wed, Oct 24, 2012 at 2:41 PM, Kurtis Heimerl <kheimerl@cs.berkeley.edu> wrote:
If I remember, and all of this is off the top of my head, you get 8
channels per ARFCN. One is C0T0, so the remaining 7 can be configured
with the NumC7s/NumC1s variables.

On Tue, Oct 23, 2012 at 11:36 PM, Carlos Yabut
<carlos.yabut@octaltech.net> wrote:
>
> thanks... I was looking at the OpenBTS config and I saw the setting for this
> which is
> GSM.Channels.NumC7s ... but do I need to have more than one ARFCN channel
> for this?
>
>
> On Wed, Oct 24, 2012 at 1:46 PM, Kurtis Heimerl <kheimerl@cs.berkeley.edu>
> wrote:
>>
>> That will depend highly on the handsets. Each tower can be configured
>> to change the number of control channels, with a maximum of around 60,
>> if I remember correctly. That should be able to handle a large number
>> of camping attempts. Your tower is probably not configured that way.
>> See:
>>
>> https://en.wikipedia.org/wiki/Um_interface#Allowed_channel_combinations
>>
>> On Tue, Oct 23, 2012 at 10:26 PM, Carlos Yabut
>> <carlos.yabut@octaltech.net> wrote:
>> > I have a N210 with OpenBTS. I want to know how many concurrent camping
>> > it
>> > can handle. I was testing the openbts with a set of handset and it takes
>> > about 1 minute to camp 17 MS. Is that ideal?
>> >
>> > thanks for any thoughts about this
>> >
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