Carrier Access Wide Bank 28 DS3 User Manual page 429

C-bit Errored
Seconds
C-bit Parity Framing
C-bit Severely
Errored Seconds
Channel
Circuit
Circuit Identifier
Circuit Switching
Coding Violation
Comite Consultatif
Internationale de
Telegraphique et
Telephonique
Community Name
Conference of Postal
and Telecommunica-
tions Administra-
tions
CRC-6
Wide Bank 28 DS3 - Release 2.4
CES. A second with one or more CCVs OR one or more Out of Frame defects OR a
detected incoming AIS. This count is only for the SYNTRAN and C-bit Parity DS3
applications. This gauge is not incremented when UASs are counted.
A DS3 frame format with overhead communications bits. Unlike M23 framing, C-bit parity
framing does not require a stuffing indicator (stuffing is always present), so the C-bits are
used to carry alarms, data, and status information. See Stuffing.
CSES. A second with 44 or more CCVs OR one or more Out of Frame defects OR a
detected incoming AIS. This count is only for the SYNTRAN and C-bit Parity DS3
applications. This gauge is not incremented when UAS are counted.
The smallest subdivision of a circuit that provides a type of communication service; usually
a path with only one direction.
A communications path or network; usually a pair of channels providing bi-directional
communication.
A character string assigned by the circuit vendor, which is useful when communicating
with the vendor during the troubleshooting process.
Basic switching process whereby a circuit between two users is opened on demand and
maintained for their exclusive use for the duration of the transmission.
CV. A transmission error detected by the difference between the transmitted and the locally
calculated bit-interleaved parity.
CCITT. The technical organs of the United Nations specialized agency for
telecommunications, now the International Telecommunications Union - Telecom. They
function through international committees of telephone administrations and private
operating agencies.
String that defines an administrative relationship between SNMP entities.
CEPT. The European CEPT format defines the 2.048 Mbps European E1 signal made up
of 30 voice-frequency channels.
A six-bit Cyclical Redundancy Check code embedded in the ESF frame and used to verify
data transmission. If the transmitted and received CRC-6 codes match, it is highly probable
that the ESF field arrived without error; however, if the CRC-6s do not match, one or more
errors have occurred during the transmission of that particular ESF field. CRC-6 error
events are logged into internal pairs of registers within the CSU and may be recalled
through the 4 Kbps Facility Data Link (FDL) by the customer and the carrier.
July 2004
Glossary
Glossary-7