Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 336)

A-4 Access Manager 2000 Manual
Channel Service Unit The portion of the NCC or TAC that performs CSU functions, such as
line framing and coding conversions, alarm transcoding, performance
data storage and processing, alarm reporting, and circuit loopback and
test signal application operations.
Circuit A circuit consists of any two network circuit elements and the
interconnecting T1 facility, that have Access Manager 2000 access in a
T1 network.
Circuit
Configuration A set of circuit element attributes describing the locations of nodes and
equipment in a circuit.
Circuit Element A circuit element is a single module of the parent node to which Access
Manager 2000 is connected. If the parent node is a multiline module,
such as an AS2000 type, a circuit element is one of the plug-ins in one
of shelves controlled by the node; it is identified by the parent node’s
Node Name and a [shelf, slot] index. The shelf index is identical to the
shelf address set during the hardware installation.
Circuit Name The name for a circuit supplied by a user of Access Manager 2000.
Clear (1) To reset the auto-acknowledged alarms counter to zero.
(2) A trouble condition that no longer exists.
Clock An oscillator-generated signal that provides a timing reference for a
transmission link.
Code Violation - Line For an AMI-coded signal, this is a bipolar violation BPV occurrence.
For a B8ZS-coded signal, this is the occurrence of a BPV, which is not
a zero-substitution code.
Code Violation - Path When SF (D4) framing is used, this is a framing error. For ESF
framing, this is a CRC-6 error
Connector A physical interface, such as DA-15 or DC-37, typically with male and
female components.
CRC-6 See Cyclic Redundancy Check.
CRC-6 Error Event Occurs when the CRC code in a received ESF signal fails to match the
CRC code calculated locally by the CSU. A CRC-6 error event
indicates that at least one bit of the frame has not been received
correctly.
Term Definition