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List of terms
egress accounting
A method of collecting information based on customer use of network resources. The information is used by the service provider to develop billing policies and quality of service parameters. As the name implies, this information is collected at the exit (egress) points of the network for each frame relay data link connection (DLC).
egress node
The last Nortel Multiservice Switch node that processes the packet as it traverses the Multiservice Switch network; that is, the node from which the packet exits the Multiservice Switch network.
See also ingress node (page 64) and tandem node (page 132).
egress protocol
The egress protocol synchronizes the accounting meters at the opposite ends of the connection and facilitates the exchange of data collected by the accounting meters.
egress traffic
Egress traffic refers to the traffic exiting from a Nortel Multiservice Switch network through an access point.
EIR
See excess information rate (EIR) (page 50).
elastic connection
An ATM connection type that is able to respond to changes in bandwidth over an ATM link through a decrease or an increase in its contracted data rate.
EM
See enterprise module (EM) (page 48).
emission priority (EP)
Traffic management mechanism used to handle delay requirements of different types of traffic. Emission priority grading is implemented in three emission queues, interrupting, high, and normal, which are serviced in that order. The interrupting queue is typically used for CBR traffic, such as voice and BTDS. The high and normal priority queues are used for VBR traffic, such as frame relay. This queue arrangement allows
Nortel Multiservice Switch 7400/15000/20000
Terminology
PCR7.2 and up March 2006
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