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List of terms

security policy database (SPD)

A database containing all of the policies that define the security protocols for all IP traffic flows in and out of a peer.

segmentation and reassembly (SAR) sublayer

A sublayer of an AAL that performs segmentation of the higher-layer PDUs into ATM cell payloads and receives ATM cell payloads to be reassembled into higher-layer PDUs.

serialization delay

Serialization delay is the time to clock a frame or cell into or out of a device (Nortel Multiservice Switch node).

service

A software application. Examples of a Nortel Multiservice Switch service: frame relay and ATM bearer service.

service access point (SAP)

The service access point of a protocol layer is the point at which an upper (client) layer requests service from the layer.

service bundle

A Nortel Multiservice Switch feature that packages software for downloading to the network processing units (NPUs) on a GQM-based FP.

service data unit (SDU)

The entire packet of data received from the immediate upper (client) layer to be serviced by a protocol layer. The PDU of the client layer is the SDU of the next lower layer.

service interworking function (SIWF)

1The FR-ATM SIWF enables frame relay customer-provided equipment (CPE) to communicate with ATM-capable CPE. The SIWF maintains standard interworking between frame relay and ATM equipment, and maps frame relay DLCIs to ATM VCCs on a one-to-one basis. The FR- ATM service interworking function is based on the FRF.8 standard.

2See also, FR-ATM interworking service (page 56).

service request (SR)

A request for Nortel Networks to fix a problem.

service-specific convergence sublayer (SSCS)

A sublayer of an AAL that adapts the specific requirements of the service utilizing the AAL to the lower common AAL sublayers.

Nortel Multiservice Switch 7400/15000/20000

Terminology

NN10600-005 7.2S1 Standard

PCR7.2 and up March 2006

Copyright © 2006, Nortel

Nortel Confidential

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Panasonic 15000 manual Security policy database SPD, Segmentation and reassembly SAR sublayer, Serialization delay, Service