Alcatel Speed Touch 591s, Техническое руководство пользователя

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Glossary
GL-2 Speed Touch 591s Technical Practices
90-8785-01 February 2001
ATM asynchronous transfer mode
A multiplexing/switching technique in which information is organized into
fixed-length cells, with each cell consisting of an identification header field
and an information field. The transfer mode is asynchronous in the sense that
the use of the cells depends on the required or instantaneous bit rate.
BER bit error ratio
The BER is the ratio of incorrect bits to total number of bits transmitted.
binder group a group of cables sharing the same conduit
C control
C is a control signal for X.21.
CAS channel associated signaling
CAS is a type of E1 link where 4 bits of signaling per timeslot are
multiplexed into timeslot 16.
CDV cell delay variation
CDVT cell delay variation tolerance
CDVT is the upper limit of allowable cell delay variation. When cells from
two or more ATM connections are multiplexed, cells of an ATM connection
may be delayed while cells of another ATM connection are inserted at the
output of the multiplexer. Similarly, some cells may be delayed while
physical layer overhead or OAM cells are inserted.
CE circuit emulation
CIR committed information rate
The CIR is the guaranteed minimum throughput between two end-user
devices over the frame relay network, under normal operating
circumstances.
CLP cell loss priority
The CLP is a one-bit field in the ATM cell header that indicates the loss
priority of an individual cell.
CO central office
CPE customer premises equipment
CPSS control packet switching system
A CPSS is a proprietary network protocol for communication between
equipment. Similar to X.25, CPSS is a packet-switched system used to
transfer configuration and status information between nodes.
CRC cyclic redundancy check
A CRC is a process used to check the integrity of a block of data.