>=20
> On Apr 9, 2013, at 6:21 AM, RussellMc wrote:
>=20
> I'm interested in knowing what it would take at a minimum to enable
> GSM cellphone to cellphone comms among a limited number of phones in
> the absence of a traditional cell-site structure. ie add your own
> cell-site if necessary.
> ..........................
> ..................
>=20
>              Russell

Does send and receive have to be symmetrically robust ?  Or are you more co=
ncerned with detecting a cell phone that is transmitting ?
Gus
--=20
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