Introduction to Networking for NonStop S-Series Servers

Glossary
Introduction to Networking for HP NonStop S-Series Servers—520670-005
Glossary-3
broadband
broadband. A signaling technique in which the signal is modulated by a modem.
Broadband is characterized by the use of multiple frequency channels for transmission.
Contrast with baseband and carrierband.
BSC. See Binary Synchronous Communication (BSC).
bus. A system or subsystem data path that provides serial or parallel interconnection for
multiple modules or components. Examples of buses are serial maintenance buses
(SMBs) and SCSI buses.
byte-synchronous data transmission. A method of data transmission in which embedded
control characters govern data transmission on a link. For example, control characters
delimit blocks and headers and label transparent data.
carrierband. A signaling technique similar to broadband and associated with token bus
local area networks (LANs). Carrierband differs from broadband in that only one
frequency channel is used for transmission. Contrast also with baseband.
Carrier Sense Multiple Access with Collision Detection (CSMA/CD). A local area
network (LAN) access method defined by Ethernet and IEEE 802.3.
CCITT. See International Telecommunications Union–Telecommunications (ITU–T).
character mode. A type of operation in which an asynchronous device transmits and
receives characters one at a time, with each character preceded by a start bit and
followed by one or more stop bits.
client. A software process, hardware device, or combination of the two that requests
services from a server. Often, the client is a process residing on a programmable
workstation and is the part of the application that provides the user interface. The
workstation client might also perform other portions of the application logic.
CLIP. See communications line interface processor (CLIP).
CLNP. See connectionless network protocol (CLNP)
.
cluster. A group of related devices or systems under common control.
cluster controller. A device that controls access to a group of terminals or printers.
cluster switch. See Cluster Switch
on page A-1.
CNM. See communications network management (CNM) interface.
coaxial cable. A transmission cable consisting of two conductors concentrically arranged
and separated by an insulating layer, and characterized by high data rates, low error
rates, and low electrical interference.
collector. A process, defined by the Event Management Service (EMS), to which
subsystems report events.