- 96 -
List of terms
Packet over SONET
When POS is supported, the generic queue manager (GQM) function processor (FP) cards of a Nortel Multiservice Switch 7400, Multiservice Switch 15000, or Multiservice Switch 20000 nodes transmit or receive packets over SONET (POS), or over SDH. POS handles whatever the packet- based data is because it is a layer 3 protocol over a layer 1 transmission with no layer 2.
packet voice gateway (PVG)
A gateway between an ATM network and service provider networks that allows voice and voice band data traffic to be delivered over an ATM broadband network instead of the narrowband nodes of the PSTN.
The term “PVG” is synonymous with the term “media gateway”. Refer to media gateway (MG) (page 80) for more information.
panic
An abnormal halt to operations caused by an internal error. When an internal error occurs and the router is unable to recover gracefully, the router generates a text string, saves logout areas, and halts operations. A panic can lead to a restart if the nucleus is configured to restart on error.
parent node
The logical group node that represents the containing peer group of a specific node at the next higher level of the hierarchy.
parent peer group
The parent peer group of a peer group contains the logical group node that represents that peer group.
partial packet discard (PPD)
A Nortel Multiservice Switch ATM traffic management strategy through which cells are discarded if they belong to a frame that has had one or more cells previously discarded. This strategy ensures that cells that will eventually be discarded at the endpoints are not transmitted across the network, thereby increasing network
party
Is sometimes used interchangeably with leaf. However, a party should more accurately be considered as a component of a PMP call with its primary attribute being the destination that it defines. For example, in a PMP SPVC context, a provisioned party on the SPVC will result in a leaf when that portion of the PMP connection terminates. Branches for the PMP call in transit nodes can be servicing single or multiple parties, each of which will terminate at a leaf.
Nortel Multiservice Switch 7400/15000/20000
Terminology
PCR7.2 and up March 2006
Copyright © 2006, Nortel | Nortel Confidential |
