Panasonic X66 - Manual (Page 121)

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PIN2 Personal Identification Number used for the control of Fixed Dial Store and Call Charge metering.
Supplied by your service provider. If the PIN2 is entered incorrectly 3 times, the PIN2 will be blocked.
PUK/PUK2 PIN/PIN2 Unblocking Key. Used to unblock the PIN/PIN2. Supplied by your service provider. If the PUK/
PUK2 is entered incorrectly 10 times, the PUK/PUK2 will be blocked.
Registration The act of locking on to a GSM network. This is usually performed automatically by your phone.
Roaming The ability to use your phone on networks other than your Home network.
Service Provider The organization responsible for providing access to the GSM network.
SIM Subscriber Identity Module. A small smart-card which stores unique subscriber and user-entered
information such as Contacts and Short Messages. Supplied by your service provider.
SMS Short Message Service. A basic mail system used for cellular phones. This service allows sending/
receiving short text messages.
URL Uniform Resource Locator. The URL is an alphanumeric address that points to home pages and other
Internet locations.
WAP Wireless Application Protocol. The communication standard which enables you to download resources
from the Internet to your phone.