Phone Technology

Marty

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Not for hiking.  GPS enabled for 911 emergency location.

http://www.mot.com/LMPS/iDEN/
(product info)
iDEN is a new type of wireless communications called Enhanced Specialized Mobile Radio (ESMR). iDEN stands for integrated Digital Enhanced Network. Multiple user groups share a common infrastructure covering a large area, but only hear their own communications, offering a virtual private network.

The Private Call feature allows two users to have a private conversation without other members of the Talkgroup listening-using only one radio channel.

Telephone Interconnect – a quality telephone interconnected wireless service that is full duplex with automatic dialing. Typical mobile telephone features are supported.

The digital technology is TDMA (Time Division Multiple Access) using six time slots in only 25 kHz. of bandwidth.

Radio Spectrum: iDEN operates on 800 MHz. Specialized mobile Radio (SMR) frequencies.
 


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