Samsung SGH-D410 User Manual download pdf (Page 192)

Glossary

192

to eight-digit number and can be changed, as

required.

Proxy Server

A proxy server resides between a Web client, such

as a web browser, and a real Web server and acts

as an intermediary between them. When some

people browse a web site, their browser is not

actually connecting to the web server. The request

from their browser goes to a proxy server, and the

proxy server makes the request to the web server.

A proxy server can improve performance for groups

of users because it cache the results of all requests

for a certain amount of a time. If a user requests a

web page that it already loaded for another user, it

reloads the page instead of forwarding the request

to the Web server, which can be a time-consuming

operation.

PUK (PIN Unblocking Key)

Security code used to unlock the phone when an

incorrect PIN has been entered three times in

succession. The eight-digit number is supplied by

the service provider with the SIM card.

Roaming

Use of your phone when you are outside your home

area (when travelling for example).

SDN (Service Dialling Numbers)

Telephone numbers supplied by your network

provider and giving access to special services, such

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Samsung SGH-D410 User Manual Page 192