Motorola 2200 Administrator's Handbook page 332

Administrator's Handbook
asynchronous communication. Network system that allows data to be sent at irregular intervals by pre-
ceding each octet with a start bit and following it with a stop bit. Compare synchronous communication.
Auth Protocol. Authentication Protocol for IP packet header. The three parameter values are None, Encap-
sulating Security Payload (ESP) and Authentication Header (AH).
-----B-----
backbone. The segment of the network used as the primary path for transporting traffic between network
segments.
baud rate. Unit of signaling speed equal to the number of number of times per second a signal in a com-
munications channel varies between states. Baud is synonymous with bits per second (bps) if each signal
represents one bit.
binary. Numbering system that uses only zeros and ones.
bps. Bits per second. A measure of data transmission speed.
BRI. Basic Rate Interface. ISDN standard for provision of low-speed ISDN services (two B channels (64
kbps each) and one D channel (16 kbps)) over a single wire pair.
bridge. Device that passes packets between two network segments according to the packets' destination
address.
broadcast. Message sent to all nodes on a network.
broadcast address. Special IP address reserved for simultaneous broadcast to all network nodes.
buffer. Storage area used to hold data until it can be forwarded.
-----C-----
carrier. Signal suitable for transmission of information.
CCITT. Comité Consultatif International Télégraphique et Téléphonique or Consultative Committee for Inter-
national Telegraph and Telephone. An international organization responsible for developing telecommunica-
tion standards.
CD. Carrier Detect.
CHAP. Challenge-Handshake Authentication Protocol. Security protocol in PPP that prevents unauthorized
access to network services. See RFC 1334 for PAP specifications Compare PAP.
client. Network node that requests services from a server.
CPE. Customer Premises Equipment. Terminating equipment such as terminals, telephones and modems
that connects a customer site to the telephone company network.
CO. Central Office. Typically a local telephone company facility responsible for connecting all lines in an
area.
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