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LOSSARY
B channel
Bearer channel. In ISDN communications, a B channel transmits data or 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; PRI is the
other. Each BRI consists of two 64 Kbps B channels and one 16 Kbps
D channel for each ISDN line.
BACP/BAP
Bandwidth Allocation Control Protocol (BACP) and Bandwidth Allocation Protocol
(BAP) are used in conjunction with the Multilink PPP feature. When Multilink PPP is
negotiated, the BACP negotiates with the peer equipment to determine whether
the peer supports BAP. If the peer supports BAP and agrees to use BAP, then the
BAP negotiates the addition and removal of the second B channel with the peer
equipment based on a user-defined threshold. A key advantage of BACP/BAP is
that it provides a higher probability of establishing a Multilink PPP call during high
traffic conditions by providing a specific telephone number for the second
B channel to call.
CHAP
Challenge Handshake Authentication Protocol. CHAP is one of two PPP
authentication protocols supported by the ISDN LAN Modem; 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.
compression
Compression is a method of reducing the size of data packets without losing any
information. The ISDN modem automatically compresses data for PPP calls to
improve data transfer times using a compression method called Hi/fn LZS.
D channel
The signaling channel on an ISDN line used to carry messages between the ISDN
LAN Modem and the public switch.
DBA
Dynamic Bandwidth Allocation. DBA is a method of reallocating bandwidth (such
as a B channel) automatically. DBA allows you to place or receive a voice call while
a Multilink PPP call is active.
DHCP
Dynamic Host Configuration Protocol. DHCP allows a server to automatically
assign an IP address to a newly-attached computer on an IP network.
default
Value set at the factory.
domain
A domain is a unique name which refers to a single entity on the Internet and is
used for organizational purposes.
DNS
Domain Name Server. DNS translates the common alphabetic name into the
numeric IP address. For example, floyds_PC is translated to 192.168.1.2.