3Com 3C882 manual Plain old telephone service, 120

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.