Nortel Passport 4400, Using Manual, Page: 123 / 144

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Using Passport 4400 Install Tool Version 4.2
relaying media access control (MAC) frames between LANs in a manner that
is invisible to the originating host.
broadcast
To send one or more messages to all addresses on one or more networks.
call establishment
Establishing a call between two access services across a network.
CBR
Constant Bit Rate. This service provides a point-to-point connection between
two third-party devices transmitting non-HDLC framed data, regardless of the
protocol, transparently routing the data.
CCS
Common Channel Signaling. A means of passing signaling information for
multiple bearer channels over a single data link, using one of the DS0 time
slots. In E1, time slot 16 carries the signaling information. In T1, time slot 24
is usually dedicated to signaling; but any one of the time slots may be
configured for that purpose. Signaling information for individual channels is
passed by HDLC protocol. Examples are: Q.SIG, Q921/31, DPNSS and SS7.
See also Transparent CCS.
CIR
Committed Information Rate. For frame relay, a bandwidth or information
rate that represents the average level for a user. This bandwidth must be
purchased from the frame relay service provider.
CLI
Command Line Interface. The Passport 4400 CLI is a low-level command
language for setting and viewing configuration options. Each configuration
option maps directly to a MIB object in the Passport 4400 SNMP
management interface.
committed burst (Bc)
The maximum amount of data (in bits) that a network agrees to transfer under
normal conditions over a measurement interval. The data may be in the form
of one frame or many frames.