Mobile Phone User's Guide

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92 Glossary
Dual Band GSM 900/1800
The Ericsson S 988 is a dual band phone, which means that you can use your
phone on two different kinds of networks – the GSM 900 and the GSM 1800
(also called PCN or DCS 1800) systems.
A dual band phone that combines the two standards can use both frequencies.
This increases capacity in densely populated urban areas, and consequently
improves the coverage offered by your network operator. It also offers you
enhanced international roaming, thanks to the additional networks now availa-
ble when you are out travelling.
The switching between the two systems is done automatically and seamlessly,
which means that you can use your phone without ever having to consider
which system is best at the time. This is taken care of by the networks. How-
ever, you should note that the functions offered and the network coverage dif-
fer depending on your choice of operator and/or subscription.
Enter
is used for keying in letters or numbers from the keypad.
Fixed Dialling Numbers
enables you to allow only numbers beginning with certain pre-defined figures
to be dialled from your mobile phone. The service is activated by PIN2. To
use this service, it must be supported by your network.
Full Duplex
in handsfree equipment, means that both parties on the phone can talk at the
same time.
Fax Class
Standards for fax transmission are set as classes. Class I and II allow data
transfer speeds of between 2400 up to 9600 bps.
GSM 900
GSM is the world's most widely used digital network, now operating in over
100 countries around the world, particularly in Europe and Asia-Pacific.
There are different phases of roll-out for the GSM system and GSM phones
are either phase 1 or phase 2 compliant.
GSM 1800
also known as DCS 1800 or PCN, is a digital network working on a frequency
of 1800 MHz. It is used in Europe and Asia-Pacific.