Panasonic 1200N manual Cpcs-Sdu, Cpe, Cpn, Cpu, Crc, Crf, Crm

Glossary C

CPCS-SDU

Common Part Convergence Sublayer-Service Data Unit: Protocol data unit to be delivered to the receiving AAL layer by the destination CP convergence sublayer.

CPE

Customer Premises Equipment: End user equipment that resides on the customer's premise which may not be owned by the local exchange carrier.

CPN

Calling Party Number: A parameter of the initial address message that identifies the calling number and is sent to the destination carrier.

CPU

Central Processing Center: The "brian" of the computer.It manipulates data and processes instructions coming from software or a human operator.

Crankback

A mechanism for partially releasing a connection setup in progress which has encountered a failure. This mechanism allows PNNI to perform alternate routing.

CRC

Cyclic Redundancy Check: A mathematical algorithm that computes a numerical value based on the bits in a block of data. This number is transmitted with the data and the receiver uses this information and the same algorithm to insure the accurate delivery of data by comparing the results of algorithm and the number received. If a mismatch occurs, an error in transmission is presumed.

CRF

Cell Relay Function: This is the basic function that an ATM network performs in order to provide a cell relay service to ATM end-stations.

CRF

Connection Related Function: A term used by Traffic Management to reference a point in a network or a network element where per connection functions are occurring. This is the point where policing at the VCC or VPC level may occur.

CRM

Missing RM-cell count: CRM limits the number of forward RM-cells which may be sent in the absence of received backward RM-cells.

Centillion 1200N ATM Switch User Manual	B-19
NTP 297-8103-903