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Glossary
byte
Eight bits. See also: octet.
byte-oriented protocol
Any type of data-link communication protocol
that, in order to mark the boundaries of frames, uses a specific character
from the user character set. These protocols have generally been superseded
by bit-oriented protocols. Compare with: bit-oriented protocol.
cable range
In an extended AppleTalk network, the range of numbers
allotted for use by existing nodes on the network. The value of the cable
range can be anywhere from a single to a sequence of several touching net-
work numbers. Node addresses are determined by their cable range value.
CAC
Connection Admission Control: The sequence of actions executed by
every ATM switch while connection setup is performed in order to deter-
mine if a request for connection is violating the guarantees of QoS for estab-
lished connections. Also, CAC is used to route a connection request through
an ATM network.
call admission control
A device for managing of traffic in ATM net-
works, determining the possibility of a path containing adequate bandwidth
for a requested VCC.
call establishment
Used to reference an ISDN call setup scheme when the
call is working.
call priority
In circuit-switched systems, the defining priority given to each
originating port; it specifies in which order calls will be reconnected. Addi-
tionally, call priority identifies which calls are allowed during a bandwidth
reservation.
call setup
Handshaking scheme that defines how a source and destination
device will transmit data to each other.
call setup time
The length of time necessary to effect a switched call
between DTE devices.
CBR
constant bit rate: An ATM Forum QoS class created for use in ATM
networks. CBR is used for connections that rely on precision clocking to
guarantee trustworthy delivery. Compare with: ABR and VBR.
CD
carrier detect: A signal indicating that an interface is active or that a
connection generated by a modem has been established.
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