GLOSSARY 4
PAP
Password Authentication Protocol. PAP is one of two PPP
authentication protocols; CHAP is the other. An
authentication protocol requests information to verify a valid
user. PAP requests the user’s name and password for
verification.
POTS
Plain old telephone service.
PPP
Point-to-Point Protocol. PPP provides a standard method of
transmitting data through the Internet. PPP is used for
communication between a computer and an Internet
service provider.
PRI
Primary Rate Interface. A PRI line is one of two access
methods to the ISDN. In North America, each PRI consists of
twenty-three 64 Kbps B channels and one 64 Kbps
D channel.
QuickSelect
A built-in feature that automatically detects and uses the
protocol required for each digital call: V.120 or
Async-Sync PPP.
SPID
Service Profile Identifier. If required, this number is supplied
to you by the telephone company. Typically, if your ISDN line
has only one telephone number, a SPID is not required.
V.120
A rate adaption scheme that converts transmission rates from
a range of 300 bps to 115.2 Kbps to the B channel
56 Kbps or 64 Kbps rate. V.120 is used for communication
between two computers.