Nortel Networks NN43021-110 manual Network Routing Service

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Hardware architecture 53

Network Routing Service

NRS for CS 1000 Release 5.5 software is offered in two versions: a SIP Redirect Server NRS and a SIP Proxy NRS.

The SIP Redirect Server NRS is hosted either co-resident with Signaling Server applications, or in a stand-alone mode on a dedicated Common Processor Pentium Mobile (CP PM) server running the VxWorks™ real-time operating system. There are no changes to the SIP Redirect Server NRS in CS 1000 Release 5.5.

The SIP Proxy NRS is hosted in a stand-alone mode on a dedicated commercial off the shelf server running the Linux™ real-time operating system. The SIP Proxy NRS is referred to as the Linux-based NRS.

The NRS application provides network-based routing, combining the following into a single application:

•H.323 Gatekeeper — The H.323 Gatekeeper provides central dialing plan management and routing for H.323-based endpoints and gateways.

•SIP Redirect Server — The SIP Redirect Server provides central dialing plan management and routing for SIP-based endpoints and gateways.

•NRS Database — The NRS database stores the central dialing plan in XML format for both the SIP Redirect Server and the H.323 Gatekeeper. The SIP Redirect Server and H.323 Gatekeeper both access this common endpoint and gateway database.

•Network Connect Server (NCS) — The NCS is used only for Virtual Office, Branch Office, and Geographic Redundancy solutions.

•NRS Manager web interface — The NRS provides its own web interface to configure the SIP Redirect Server, the H.323 Gatekeeper, and the NCS.

The NRS application provides routing services to both H.323 and SIP-compliant devices. The H.323 Gatekeeper can be configured to support H.323 routing services, while the SIP Redirect Server can be configured to support SIP routing services.

Nortel Communication Server 1000

Communication Server 1000M and Meridian 1 Large System Overview

NN43021-110 02.05 Standard

30 September 2008

Copyright © 2003-2008 Nortel Networks

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Contents Communication Server 1000M Meridian 1 Large System Overview Legal Notice Contents Copyright 2003-2008 Nortel Networks Revision History OtherNew in this Release Getting help from the Nortel Web site How to get helpGetting help through a Nortel distributor or reseller Applicable systems SubjectConventions Intended audienceSystem migration TerminologyNTPs Related informationIntroduction Introduction ContentsProduct description CS 1000M HGand Meridian 1 Option 51C System optionsMeridian 1 Option 51C CS 1000M HG Memory options Meridian 1 PBX 61C CP PIVor Meridian 1 Option 61C CS 1000M SGand Meridian 1 PBX 61C CP PIVCS 1000M SG PDU Meridian 1 PBX 81C CP PIVor Option 81C CS 1000M MGand Meridian 1 PBX 81C CP PIVCS 1000M MG Msdl NT4N41 Core/Network module System modulesNetwork side Core sideNT5D21 Core/Network module NT8D35 Network module NT8D35 Network module Fiber Network Fabric NT8D37 Intelligent Peripheral Equipment module Carrier Remote IPE Fiber Remote IPE moduleProduct description System architecture Hardware architecture Common control complex System architecture Hardware architecture CS 1000M SGand Meridian 1 PBX 61C CP PIVcore complex Network interface Network organization Superloop network configurations System architecture Intelligent Peripheral Equipment Intelligent Peripheral Equipment cards Number Terminations Intelligent Peripheral Equipment remote location Attendant consoles Terminal equipmentDigital telephones AC power Power equipmentDC power Signaling Server Candeo DC power systemNortel Common Processor Pentium Mobile server Hewlett Packard DL320-G4 server International Business Machines X306m serverTerminal Proxy Server SIP/H.323 Signaling GatewaysNetwork Routing Service SIP Proxy NRS Manager Software architectureElement Manager Software FirmwareOfﬁce data Resident programsNonresident programs Service change and print routinesMaintenance diagnostics Traffic Conﬁguration optionsEquipment data dump Software auditFiber Remote Multi-IPE Interface Fundamentals N43021-556 Meridian 1 Large Systemto Carrier Remote IPE links Geographic Redundancy Branch OfﬁceBattery backup Analog signalAnalog ArchitectureCentral Office CO ConfigurationCentral processing unit CPU Circuit cardsDigital signal Diagnostic programsCPCI Transition card Electromagnetic interference EMIPower distribution unit PDU Module power suppliesRandom-access memory RAM LineRedundancy Read-only memory ROMSoftware generic System monitorUniversal equipment module UEM Top capTrunk Page Nortel Communication Server