Robin,
Um is the name of the GSM interface between the Mobile handset and the GSM Network.
Sincerely,
MartinOn Wed, Aug 22, 2012 at 2:18 PM, Robin Coxe <coxe@close-haul.com> wrote:
I've been meaning to ask this question for a while and am just now getting around to it-- does the Um in UmTRX mean something significant in Russian?