Cisco BPX-BXM-155-8DX Installation And Configuration Manual page 605

C
A signalling mode in E1 transmission where the signalling bits for all 30 E1 channels are carried in
CAS (Channel
Associated timeslot 16. Timeslots 1 to 15 and 17 to 31 carry encoded voice bits only.
Signalling)
ATM Connection type for constant bit rate traffic such as voice or synchronized data requiring a low
CBR (Constant Bit
Rate) variation in delay. (See also, VBR and ABR.)
A parameter utilized in defining ATM Constant Bit Rate service. The amount of delay that is acceptable
CCDV (Compliant
Cell Delay between ATM cells for them to be accepted as compliant (usable).
Variation)
An international telecommunications advisory committee established under the United Nations to
CCITT (Consultive
recommend worldwide standards for data and voice communications.
Committee for
International
Telephone and
Telegraph)
A carrier signalling mode in E1 transmission where signalling bits are not used. CCS typically
CCS (Common
Channel Signalling) separates user data from signalling information. A signalling channel is used to provide signalling for
all other user data channels in the system.
Controls time scale over which the PCR is policed.
CDVT (Cell Delay
Variation
Tolerance)
A unit of data with a fixed number of bytes. For ATM the cell size is 53 bytes.
Cell
A form of digital communications using fixed length cells consisting of data and a small header. IPX
cell relay
FastPacket was an early implementation of cell relay. The 53 byte ATM cell consists of data and a small
header.
CEPT is the European Conference of Posts and Telecommunications Administrations. This association
CEPT
is comprised of European Telecommunications service providers that participate in relevant areas of
the work of CEN/CENELEC.
A major alarm condition for a T1 multiplexer or PABX that results in all channels being taken out of
CGA (Carrier Group
Alarm) service.
The logical end point for a connection.
channel
A T1 or E1 line that connects a user device, such as a PABX or channel bank to a switch. Carries
circuit line
customer DS0 voice and data circuits. (See also line.)
A Unix-based workstation and software used as a network management system (NMS) for Cisco WAN
Cisco StrataView
Plus switching networks. It is part of the StrataSphere group. Provides a graphical user interface for
configuration, maintenance, administration of the network. Collects and displays network statistics.
When all eight bits of a channel word in the T1 line signal are available for transmitting customer data
clear channel
capability with no restrictions on content. Also referred to as 64 Kbps clear channel.
A frame relay connection parameter that specifies the number of packets allowed in the initial burst of
Cmax
data after which the data bandwidth is reduced to the connection's minimum specified bandwidth.
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Cisco BPX 8600 Series Installation and Configuration
Glossary
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