电信热门词汇集（4）

Multi-access portal
A service that provides Web access from a range of different devices such as mobile, fixed and cable television devices.

PDA
Personal Digital Assistant - devices such as personal organisers (e.g. Palm and iPAQ).

Portal
A gateway or entry point to the Internet incorporating significant functionality such as search engines, news alerts and personal preferences that enable users to access the data they want from the Web from a central point.

Prepay customer
A customer who does not have a written contract and buys his/her talk time in advance, by purchasing vouchers from retail outlets for example. See Contract Customer.

Roaming
The facility for a subscriber to use his/ her mobile for both outgoing and incoming calls on any other network, in the same or another country, that has entered into a commercial roaming agreement with the subscriber's home network

Short code access
Codes to enable users to access services such as answerphones without having to dial a full number.

SMS or text messaging
Short Message Service. A service which enables mobile telephone users to send and receive text messages on their handsets.

Spectrum
A specific frequency range.

TDMA
Time Division Multiple Access - a generic term for a type of digital mobile telephony technology including GSM.

UMTS
Universal Mobile Telecommunications System. Also known as 3G, the third generation digital standard for mobile telecommunications