Verilink AS2000: The Basics (880-502981-001) Product Manual - Manual (Page 129)

Acronyms and Definitions
Verilink Access System 2000: Basics Glossary-9
CES C-bit Errored Second. In DS3
circuits, a second with one or more
CCV s OR one or more out-of-
frame (OOF) defects OR a
detected incoming AIS . The CES
count does not increase when
UAS s are counted.
channel In communications, a physical or
logical path allowing the
transmission of information to
flow from point-to-point. Also
known as timeslot or DS0.
timeslot.
channel associated signaling (CAS) An E1 signaling option which pre-
assigns each information channel’s
signaling bits to timeslot 16 in a
particular frame. There are sixteen
frames within a CAS multiframe.
channel bank A multiplexer which combines
multiple voice or data signals onto
one high-speed link and controls
the flow of those signals. Used in
converting analog signals into
digital signals for transmission
across network lines.
Channel Service Unit (CSU) Terminates a T1 circuit at a
customer’s location or in the
central office. It provides line
equalization and conditioning
functions and responds to
diagnostic requests sent from a
central office.
CIM See connector interface
modules (CIM) .
CIR See Committed Information
Rate (CIR) .
circuit The fixed path on which data
travels. This definition implies an
established origin and destination.
A circuit consists of any two
network circuit elements and the
interconnecting facility.
Terminology examples include
voice circuit and video circuit. The
AS2000 can also build circuits on a
DS0 basis between a port two
application module ports. The
port can be a network port or data
port.
circuit build Function by which the timeslot is
routed from one network,
equipment or DTE port to another
network or DTE port.
Circuit Manager Function the NCM 2000 uses to
build and maintain circuits within a
node.