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Important Information
This guide provides important information on the use and operation of
your phone.
Please read all the information carefully prior to using the phone for the
best performance and to prevent any damage to or misuse of the phone.
Any unapproved changes or modifications will void your warranty.
Technical Details
The AS740 is an all digital phone that operates on both Code Division
Multiple Access (CDMA) frequencies: Cellular services at 800 MHz and
Personal Communication Services (PCS) at 1.9 GHz.
CDMA technology uses a feature called DSSS (Direct Sequence Spread
Spectrum) that enables the phone to keep communication from being
crossed and to use one frequency channel by multiple users in the same
specific area. This results in a 10-fold capacity increase when compared
with analog mode. In addition, features such as soft / softer handoff, hard
handoff, and dynamic RF power control technologies combine to reduce
call interruptions.
The Cellular and PCS CDMA networks consist of MSO (Mobile
Switching Office), BSC (Base Station Controller), BTS (Base Station
Transmission System), and MS (Mobile Station).
* TSB-74: Protocol between an IS- 95A system and ANSI J-STD- 008
Its battery life is twice as long as IS-95. High-speed data transmission is
also possible.
The following table lists some major CDMA standards.
Technical Details