Panasonic 1200N manual Cdvt, Cei, Cer, Ces, Cfad

Glossary C

CDVT

Cell Delay Variation Tolerance-ATM layer functions may alter the traffic characteristics of ATM connections by introducing Cell Delay Variation. When cells from two or more ATM connections are multiplexed, cells of a given ATM connection may be delayed while cells of another ATM connection are being inserted at the output of the multiplexer. Similarly, some cells may be delayed while physical layer overhead or OAM cells are inserted. Consequently, some randomness may affect the inter-arrival time between consecutive cells of a connection as monitored at the UNI. The upper bound on the "clumping" measure is the CDVT.

CE

Connection endpoint: A terminator at one end of a layer connection within a SAP.

CEI

Connection endpoint Identifier: Identifier of a CE that can be used to identify the connection at a SAP.

Cell

A unit of transmission in ATM. A fixed-size frame consisting of a 5-octet header and a 48-octet payload.

Cell Header

ATM Layer protocol control information.

CER

Cell Error Ratio: The ratio of errored cells in a transmission in relation to the total cells sent in a transmission. The measurement is taken over a time interval and is desirable to be measured on an in-service circuit.

CES

Circuit Emulation Service: The ATM Forum circuit emulation service interoperability specification specifies interoperability agreements for supporting Constant Bit Rate (CBR) traffic over ATM networks that comply with the other ATM Forum interoperability agreements. Specifically, this specification supports emulation of existing TDM circuits over ATM networks.

CFAD

Cell Frame Assembly/Disassembly

Centillion 1200N ATM Switch User Manual	B-15
NTP 297-8103-903