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UMTS
Universal Mobile Telephony System. UMTS
refers to asynchronous 3G wireless technology
of WCDMA that is developed based on GSM,
the 2G wireless technology.
USB
Universal Serial Bus. A bus type interface that
provides fast and flexible connection between
devices and a computer.
USIM
Universal Subscriber Identity Module. An IC card
used for UMTS the shape of which is the same
as that of the SIM card of GSM. USIM is
provided by network operator, and carries the
authentication and service grade data for the
network operator as well as user-specific data.
Video call
A communications service that enables users to
talk watching each other over a 64Kbps data
channel. Real-time video call service is a new
type of service provided by WCDMA wireless
communication system that is developed based
on GSM+GPRS technology.
Voice mail
Computerised answering service that
automatically answers your calls when you are
not available, plays a greeting and records a
message.
Glossary
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