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List of terms
cell switching
A
cell transfer delay (CTD)
The time it takes a cell to travel from one end of a virtual connection to the other. CTD is also defined as the measurable elapsed time between an exit event at a measuring point (the source UNI) and an entry event at a measuring point (the destination UNI). This measurement is the sum of the total inter- node transmission delay and the total node processing delay between the two measuring points.
central processing unit (CPU)
The main processing unit of a device that performs program sequencing and arithmetic logic.
CES
See circuit emulation service (CES) (page 28).
channel
The smallest subdivision of a circuit that provides a single type of communication service.
channel-associated signaling (CAS)
Signaling used in voice or modem connections in which specific bits in the DS1 or E1 frame structure carry the ABCD signaling information for each channel.
channel service unit (CSU)
A type of interface used to connect a terminal or computer to a digital medium. A CSU also performs diagnostic and protective functions, such as providing a
child node
In an ATM PNNI network, a node at the next lower level of the hierarchy where that node is contained in the peer group represented by the logical group node currently referenced. The child node can be a logical group node or a physical node.
child peer group
A child peer group of a peer group is any one group that contains a child node of a logical group node in that peer group.
CID
See customer identifier (CID) (page 38).
Nortel Multiservice Switch 7400/15000/20000
Terminology
PCR7.2 and up March 2006
Copyright © 2006, Nortel | Nortel Confidential |
