Verilink AS2000: The Basics (880-502981-001) Product Manual Manual do Utilizador descarregar pdf (Página 132)

Acronyms and Definitions

Glossary-12 Verilink Access System 2000: Basics

CV-P See

code violation—path (CV-P)

cyclic redundancy check (CRC) An error-checking algorithm

performed on data transmissions.

On a frame-by-frame basis, a

numerical value is derived from the

data in the bit stream and inserted

at the sending end of a

transmission. When each frame

reaches the receive end, the cyclic

redundancy check is calculated

again and compared with the value

received. Discrepancies usually

indicate one or more transmission

errors.

cyclic redundancy check multiframe An E1 error checking algorithm

using a group of 16 frames

numbered 0 (zero) to 15 indicating

the order of occurrence within the

CRC-4 multiframe. Bit pattern 1 of

timeslot 0 (zero) is used to carry

CRC-4 information and controls its

synchronization pattern (E1 only).

1 2 ... 127 128 129 130 131 132 133 134 135 136 137 ... 178 179

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Verilink AS2000: The Basics (880-502981-001) Product Manual Manual do Utilizador Página 132