Title page Nortel Communication Server 1000 Nortel Communication Server 1000 Release 4.5 Communication Server 1000S Overview Document Number: 553-3031-010 Document Release: Standard 3.00 Date: August 2005 Year Publish FCC TM Copyright © Nortel Networks Limited 2005 All Rights Reserved Produced in Canada Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.
4 Page 3 of 44 Revision history August 2005 Standard 3.00. This document is up-issued to support Communication Server 1000 Release 4.5. September 2004 Standard 2.00. This document is up-issued for Communication Server 1000 Release 4.0. October 2003 Standard 1.00. This document is a new NTP for Succession 3.0. It was created to support a restructuring of the Documentation Library.
Page 4 of 44 Revision history 553-3031-010 Standard 3.
6 Page 5 of 44 Contents About this document . . . . . . . . . . . . . . . . . . . . . . . 7 Subject .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Applicable systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Conventions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 6 of 44 553-3031-010 Contents Media Gateway 1000S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ethernet switch (customer-supplied) . . . . . . . . . . . . . . . . . . . . . . . . Power over LAN (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrastructure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 30 30 30 Software architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Page 7 of 44 About this document This document is a global document. Contact your system supplier or your Nortel representative to verify that the hardware and software described are supported in your area. Subject WARNING Before a CS 1000S system can be installed, a network assessment must be performed and the network must be VoIP-ready. If the minimum VoIP network requirements are not met, the system will not operate properly.
Page 8 of 44 About this document Technical Documentation link under Support & Training on the Nortel home page: www.nortel.com Applicable systems This document applies to the Communication Server 1000S (CS 1000S) system. Intended audience This document is intended for individuals responsible for the sale, acquisition, planning, or installation of a CS 1000S system. Conventions In this document, the CS 1000S system is referred to generically as “system.
About this document Page 9 of 44 • Integrated Call Director: Service Implementation Guide (553-3001-361) • Integrated Call Assistant: Service Implementation Guide (553-3001-362) • IP Line: Description, Installation, and Operation (553-3001-365) • Telephones and Consoles: Description, Installation, and Operation (553-3001-367) • IP Phones: Description, Installation, and Operation (553-3001-368) • DECT: Description, Planning, Installation, and Operation (553-3001-370) Online To access Nortel doc
Page 10 of 44 553-3031-010 About this document Standard 3.
22 Page 11 of 44 Description and features Contents This section contains information on the following topics: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Migrating to an IP telephony network . . . . . . . . . . . . . . . . . . . . . . . 12 12 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 12 of 44 Description and features Introduction WARNING Before a CS 1000S system can be installed, a network assessment must be performed and the network must be VoIP-ready. If the minimum VoIP network requirements are not met, the system will not operate properly. For information on the minimum VoIP network requirements and converging a data network with VoIP, refer to Data Networking for Voice over IP (553-3001-160).
Description and features Page 13 of 44 Figure 1 Software architecture for telephony Telephony Feature Proccessing Meridian 1 CS 1000 Circuit Switching Manager Digital Analog Telephones Telephones PSTN/ ISDN Virtual Connection Manager Other TDM Circuit Switching Equipment Media BW control IP Phone control H.323 XML SIP ...
Page 14 of 44 Description and features The Circuit Switching Manager evolved from Meridian 1 software. This migration strategy enables Telephony Feature Processing for future releases of CS 1000S to control existing Meridian 1 hardware components. In this way, the investment in existing equipment is preserved while new capabilities are added at a managed pace.
Description and features Page 15 of 44 The CS 1000S provides a number of capabilities to ensure that telephony is available in the event of equipment failure at a site. CS 1000S provides the following component redundancy: • Call Server with automatic database distribution • Signaling Server software, including H.323 Gateway and IP Phone software • H.323 Gatekeeper • H.
Page 16 of 44 Description and features • directories • call logs CallPilot 2.0 CallPilot 2.0 includes the 501t and the 1002rp messaging platforms as replacements for the existing standalone platforms. CallPilot 1.5 Mini CallPilot 1.5 Mini is a less expensive, embedded messaging stand-alone platform that provides Unified Messaging and base Voice Messaging capabilities in both Meridian 1 and CS 1000S switching environments.
Description and features Page 17 of 44 The VoIP features automatically switch from the IP network to the PSTN, when voice Quality of Service (QOS) falls below a pre-determined threshold. IP Telephony resumes when QOS levels return to an acceptable level. Remote Gateway 9150 supports a maximum of 32 digital telephones. For further information, see Remote Gateway 9150: Installation and Administration Guide (555-8421-215).
Page 18 of 44 Description and features Enhanced system management CS 1000S supports a suite of value-added management capabilities for multiple systems that reduces a customer’s total cost of ownership. These include Optivity Telephony Manager (OTM) and Element Manager. Optivity Telephony Manager Optivity Telephony Manager (OTM) provides management simplicity and flexible control.
Description and features Page 19 of 44 • configuration and maintenance of traditional routes and trunks • configuration and maintenance of numbering plans • configuration of Call Server data blocks (such as configuration data, customer data, Common Equipment data, D-channels) • maintenance commands, system status inquiries, backup and restore functions • software download, patch download, patch activation Element Manager has many features to help administrators manage systems with greater effici
Page 20 of 44 Description and features • IP Phone adapter • analog telephones and devices • attendant consoles For further information on analog and digital telephones, see Telephones and Consoles: Description, Installation, and Operation (553-3001-367). See IP Phones: Description, Installation, and Operation (553-3001-368) for information on IP Phones. IP Phones IP Phones provide the desktop clients for CS 1000S IP Telephony.
Description and features Page 21 of 44 802.11 Wireless IP Gateway The e-mobility Meridian Gateway supports communication between the circuit-switched telephony network and the H.323 Wireless IP terminals on a customer’s corporate IP network. For further information, see WLAN IP Telephony: Installation and Configuration (553-3001-304).
Page 22 of 44 Description and features Attendant consoles The CS 1000S system supports an Attendant PC software console and the M2250 attendant console. The Attendant PC software enables users to perform attendant console and call processing functions on a Windows® PC using a mouse or keyboard. The Attendant PC combines the call-processing power of the M2250 attendant console with the information-processing and storage power of a PC, enhancing attendant services.
32 Page 23 of 44 System architecture Contents This section contains information on the following topics: Hardware architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Small System Controller card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signaling Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Media Gateway 1000S .
Page 24 of 44 System architecture Hardware architecture A typical CS 1000S system consists of the following major hardware components: • NTDU30 Call Server • NTDU27 Signaling Server • NTDU14 Media Gateway 1000S (MG 1000S) • NTDU15 Media Gateway 1000S Expander (MG 1000S Expander) • IP Phones • customer-supplied Ethernet Layer 2 switch • Power over LAN unit (optional) Figure 2 on page 25 shows the major hardware components installed in a customer-supplied 19-inch rack.
System architecture Page 25 of 44 Figure 2 CS 1000S components in a rack NTDU30 Call Server NTDU27 Signaling Server NTDU14 Media Gateway 1000S NTDU15 Media Gateway 1000S Expander Customer Supplied Ethernet Switch Power over LAN unit (optional) 553-AAA2256 Communication Server 1000S Overview
Page 26 of 44 System architecture Call Server The Call Server provides telephony services, such as call processing, and supports trunking features. It also acts as a database server for synchronization of configuration information with all MG 1000S systems. A CS 1000S system can control a maximum of four MG 1000S systems and Expanders. A CS 1000S system with one Call Server supports up to 1000 IP Phones. You can network a CS 1000S system with other CS 1000S systems to support larger numbers of IP Phones.
System architecture Page 27 of 44 Signaling Server CS 1000S systems use a Signaling Server. The Signaling Server is an industry-standard, PC-based server that provides a central processor to drive H.323 and Session Initiation Protocol (SIP) signaling for IP Phones and IP Peer Networking. It provides signaling interfaces to the IP network using software components that operate on the VxWorks™ real-time operating system. The Signaling Server has both an ELAN and TLAN network interface.
Page 28 of 44 System architecture Terminal Proxy Server The Terminal Proxy Server (TPS) acts as a signaling gateway between the IP Phones and the Call Server using the UNIStim protocol. It performs the following functions: • converts the IP Phone UNIStim messages into messages the Call Server can interpret • allows IP Phones to access telephony features provided by the Call Server The TPS also controls the IP Phone registration. SIP/H.323 Signaling Gateways SIP/H.
System architecture Page 29 of 44 • 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 Media Gateway 1000B (MG 1000B) and Virtual Office solutions. • NRS Manager web interface — The NRS provides its own web interface to configure the SIP Redirect Server, the H.
Page 30 of 44 System architecture The MG 1000S supports a Small System Controller (SSC) card and four slots for flexible configurations of line, trunk, and application cards. Note: You can configure the SSC in the MG 1000S for survivability to assume local call processing if the Call Server cannot be accessed. If the MG 1000S is not configured as survivable, then the MG 1000S is out-of-service until the Call Server is again accessible. Voice Gateway Media Cards are installed in the MG 1000S.
System architecture Page 31 of 44 Software architecture Centralized Automatic Software Upgrade Centralized Automatic Software Upgrade allows a new version of software to be automatically loaded on the MG 1000S after the Call Server software is upgraded. To reduce service impact, a sequential upgrade mode upgrades only one MG 1000S at a time. Centralized upgrade Centralized upgrade enables the IP telephony components (Voice Gateway Media Cards) to be upgraded from the Element Manager interface.
Page 32 of 44 553-3031-010 System architecture Standard 3.
44 Page 33 of 44 Configuration options Contents This section contains information on the following topics: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Single campus deployment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Multiple buildings in a campus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Multiple sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 34 of 44 Configuration options in a LAN or WAN environment. Although different combinations are possible, most installations fall into one of the following categories: • Single Site — single building — multiple buildings in a campus • Multiple Sites — central Call Server with branch office users — distributed Call Servers For more information on system deployment options for the CS 1000S, refer to Data Networking for Voice over IP (553-3001-160). 553-3031-010 Standard 3.
Configuration options Page 35 of 44 Single campus deployment Figure 3 shows an example of a single campus deployment and its components. Figure 3 Single campus deployments example Call Server Signaling Server (Optionally Redundant) Rest of World PSTN Media Gateway 1000S Media Gateway 1000S Expander IP Phones Campus IP Network Survivable! Survivable! Network Management 802.
Page 36 of 44 Configuration options Note: You can configure the network for redundancy.
Configuration options Page 37 of 44 Multiple buildings in a campus Figure 4 shows a CS 1000S system distributed across multiple buildings in a campus setting. You can distribute MG 1000S systems and users across a campus IP Network.
Page 38 of 44 Configuration options Multiple sites Figure 5 shows a multi-site deployment with a central Call Server and a branch office.
Configuration options Page 39 of 44 — Requires its own Signaling Server. — MG 1000B in remote branch offices enables local PSTN and 911 access. — IP Phones are configured and managed centrally from the main office. — The MG 1000B is survivable in the event of a WAN failure. — You can configure up to 400 users for survivability. — You can use the Signaling Server virtual trunking to the central site for system management purposes.
Page 40 of 44 Configuration options Distributed Call Servers Distributed Call Servers are defined as multiple CS 1000S systems. Figure 6 shows an example of multi-site deployment with distributed Call Servers.
Configuration options Page 41 of 44 • full-featured networking between sites using IP Peer Networking and/or TIE trunks • transparent to user at all sites Reliability strategies Communication reliability is critical to the operation of any business.
Page 42 of 44 Configuration options • If the master (Leader) Signaling Server is unavailable, a Follower Signaling Server becomes the IP Telephony node master. • Signaling Servers share telephone registrations (load-sharing). • If a virtual trunk is unavailable, virtual trunk redundancy occurs (that is, the call-processing software selects an alternate route).
Configuration options Page 43 of 44 Figure 7 Network failure with survivable MG 1000S systems Call Server Signaling Server (optionally redundant) -Terminal Proxy Service (TPS) -H.323 Gateway Signaling S/W 1. Call Server Database periodically synchronized at Media Gateways 2. IP Campus Network Fails 3. Distributed Media Gateway enters Survival mode 4. Voice Gateway Media Card registers at Survival Media Gateway Controller Card 5. Operation resumes at Survivable site using local cards only 6.
Page 44 of 44 Configuration options The survivable MG 1000S (Alternate Call Server) IP address must be on the same ELAN subnet as the Call Server. If the MG 1000S is on a physically different subnet, such as in a different building, then you can use VLANs to keep IP addresses on the same logical subnet. For further implementation details, refer to Data Networking for Voice over IP (553-3001-160).
Family Product Manual Contacts Copyright FCC notice Trademarks Document number Product release Document release Date Publish Nortel Communication Server 1000 Communication Server 1000S Overview Copyright © Nortel Networks Limited 2005 All Rights Reserved Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.
