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Point-to-point protocol (PPP)
A common networking software protocol which enables any computer with
a modem and a phone line to connect directly to the Internet.
Protocol
A formal set of rules that govern how data is transferred between two
devices.
Proxy
In some networks, the connection between the WWW and the site you want
to connect to is blocked by a firewall. The firewall protects the network from
unauthorised external access. A proxy is an intermediary program that
enables access through the firewall. A proxy can also serve as a network
cache to speed up the retrieving process.
PUK (PIN Unblocking Key) code
The PUK is an 8-digit code supplied with the SIM card. The code is required
when you want to change a disabled PIN code. If you enter an incorrect PUK
code ten times in succession, the SIM card is rejected and you cannot make
or receive any calls, except emergency calls. When the SIM is rejected, you
will need a new SIM card. You cannot change the PUK code. If you lose the
code, contact your network service provider.
PUK2 Code
The PUK2 code is supplied with some SIM cards. The code is required when
you want to change a disabled PIN2 code. If you enter an incorrect PUK2
code ten times in succession, you will not be able to access the functions