Tel-us Mobility offers many great services to it's customers world wide. The main service Tel-us Mobility offers is specialized mobile radio wireless communication networks.

Mobitv Inc. is a media platform company. They offer live television for mobile phones and other mobile devises. Other services include satellite radio and digital music.

SMR can be an abbreviation for several things. The following are from medilexicon.com:

Senior Medical ResidentSensori Motor RhythmSevere Mental RetardationSexual Maturity RatingSkeletal Muscle RelaxantSomnolent Metabolic RateSpecialised Mobile RadioStandardised Mortality Ratio (UK)Stroke with Minimum ResiduumSubmucosal ResectionSubmucous Resection

47 CFR - Telecommunications

Chapter 1 - Federal Comunications Commission

Part 80 - Private Land Mobile Radio Services

The same as all cellular network frequencies:

From 824 to 849MHz, and 869 to 894MHz. The twenty frequencies bandwidths between the two blocks is reserved for Airphone, public safety, Nextel, and Specialized Mobile Radio (SMR).

the primary difference between 2G (2nd Generation) and 1G (1st Generation) cellular is that 2g applications were digitally encrypted, starting with cellular providers' switches (the system on which all cellular calls pass) and later to digital phones.