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Glossary 73
A dual band phone that combines the two standards can use both fre-
quencies. 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 available when you are 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. However, you should note that the functions
offered and the network coverage differ depending on your choice of
operator and/or subscription.
Enter
is used for keying in letters or numbers from the keypad.
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.
Full Duplex
in handsfree equipment, means that both parties on the phone can talk
at the same time.
GSM 900
The Global System for Mobile Communications (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.
The GSM systems family also includes GSM 1800 and GSM 1900.
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.
International Prefix (+)
mobile phone (+) prefix that automatically adds the correct inter-
national prefix when dialling out of a country. You then have to add
the country code, area code and phone number.
International Roaming
a mobile phone feature that allows you to switch between networks
offering coverage abroad. Your mobile phone automatically selects a