GLOSSARY

Async-Sync PPP Conversion

Asynchronous to synchronous PPP conversion. The 3C882 ISDN modem converts asynchronous PPP into synchronous (HDLC-based) PPP that can be transported in ISDN

B channels to communications servers that have integrated ISDN BRI, PRI, or T1 access lines.

AT commands

ATtention Codes. AT commands are used to configure and operate the 3C882 ISDN modem. These commands can be sent either automatically or manually through your communications software.

Autobaud

Automatic baud rate detection. Autobaud automatically detects the baud rate of your computer’s serial port.

B channel

Bearer channel. In ISDN communications, a B channel transmits data and voice traffic at a rate of up to 64 Kbps.

BRI

Basic Rate Interface. A BRI line is one of two access methods to the ISDN. Each BRI consists of two 64 Kbps B channels and one 16 Kbps D channel for each ISDN line.

CHAP

Challenge Handshake Authentication Protocol. CHAP is one of two PPP authentication protocols; PAP is the other. An authentication protocol requests information to verify a valid user. CHAP is a stronger authentication method because it uses encryption and may repeatedly request verification of the identity of the user any time after link establishment.

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3Com 3C882 manual Glossary, Async-Sync PPP Conversion, Channel