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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
frame link monitoring (FLM)
Provides the ability to distinguish between physical line failure and customer
premises equipment failure in the case of a system failure at the access to a
Nortel Multiservice Switch frame relay node.
framed protocol
A set of formal rules describing how to transmit frames. HDLC framing uses a
standard protocol for the sequential transmission of individual frames.
Interrupting framing uses a modified-HDLC format that allows voice cells to
interrupt the transmission of data frames, transmit the voice cell, and continue
transmitting the data frame.
Framer
The Framer component controls link layer framing for application components
sending and receiving data on a link interface. For frame relay applications, it
is also through Framer that an application component is associated with a
specific hardware link interface.
frame mode information (FMI)
The system responsible for maintaining the Nortel Multiservice Switch node-
to-node connections. For example, FMI supports the following connections:
Multiservice Switch node-to-Multiservice Switch node, Multiservice Switch
node-to-DPN-100 access module, Multiservice Switch node-to-DPN-100
resource module.
frame relay IP server
A logical representation that allows multiple IP-enabled FrUnis on the same
function processor to share a single protocol port on the virtual router.
frame relay multiplexor/demultiplexor
A Nortel Multiservice Switch component that can distinguish traffic from
multiple frame relay peers for distribution to multiple applications in a
Multiservice Switch node.
frame relay managed cut-through switching (MCS)
A feature that provides bidirectional, point-to-point virtual connections
between Nortel Multiservice Switch nodes at a specific quality of service
(QOS). The MCS connection is a switched path that provides many-to-one
multiplexing of connections for a data service.
frame relay service (FRS)
A streamlined ISO data link layer protocol. A frame relay network supports
only core communications functions (such as transparency, multiplexing, and
orderly delivery). This simplified processing (as opposed to traditional packet
data protocols) permits higher speeds and lower delays for a given processing
capability. Simplification is made possible by the assumed use of improved