Nortel Networks Succession 1000

Transcription

1 Richard A. Costello Product Report 26 September 2003 Nortel Networks Succession 1000 Summary Succession release 3.0 introduces Succession 1000M a scalable, fully redundant version of Succession 1000 for larger enterprises, allowing them to take advantage of the efficiencies associated with IP telephony today. Note Succession 1000 release 3.0 is scheduled for availability in 4Q03. Table of Contents Overview Analysis Succession 1000 Architecture Succession 1000 Applications Pricing Competitors Strengths Limitations Insight List Of Tables Table 1: Overview: Nortel Succession 1000 Gartner Reproduction of this publication in any form without prior written permission is forbidden. The information contained herein has been obtained from sources believed to be reliable. Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Gartner shall have no liability for errors, omissions or inadequacies in the information contained herein or for interpretations thereof. The reader assumes sole responsibility for the selection of these materials to achieve its intended results. The opinions expressed herein are subject to change without notice.

2 Corporate Headquarters Nortel Networks 8200 Dixie Road Brampton, ON L6T 5P6, Canada Tel: Fax: Internet: Overview Table 1: Overview: Nortel Succession 1000 General Specifications Succession 1000 Succession 1000M Maximum No. of Ports 1,750 (per Succession Call Server [SCS]) 16,000 (per Succession Call Server [SCS] Maximum No. of Analog Trunks 256 (per SCS) 8,000 Maximum No. of Digital Trunks 16 (T1/E1 per SCS) 5,376 Maximum No. of Virtual Telephone Numbers (TNs) 1,248 (per SCS) 65,536 Traffic Centi Call Seconds (CCS) at P.01 Grade of 54,000 CCS (per SCS) 228,000 total CCS Service (GoS) Maximum No. of Analog Sets 480 (per SCS) 16,000 Maximum No. of Digital Sets 480 (per SCS) 16,000 Maximum No. of IP Sets 1,000 (per SCS) 10,000 Type of Switch IP-based architecture IP-based architecture Main Processor(s) Motorola Motorola 68060, Motorola 68060E, Intel Pentium II Networking Up to 255 SCSs can be peer networked in an H.323 gatekeeper zone (21 maximum gatekeeper zones) Up to 255 SCSs can be peer networked in an H.323 gatekeeper zone (21 maximum gatekeeper zones) Redundancy Alternate Succession Call Server; Survivable Media Gateway; Survivable Branch Office; failover to public switched telephone network (PSTN); tertiary failover on IP signaling components Full core system element redundancy 26 September

3 Table 1: Overview: Nortel Succession 1000 General Specifications Succession 1000 Succession 1000M IP Telephones Supported IP Standards Supported Application Interfaces Supported Analysis Nortel i2001, i2002 and i2004 Internet Telephones, Nortel i2050 Software Phone and i2050 Mobile Voice Client, wireless Voice over IP (VoIP) handsets H.323v.3, Meridian Customer Defined Networking (MCDN), Lightweight Directory Access Protocol (LDAP), Q.Signaling (Qsig), in-band and Digital Private Network Signaling System (DPNSS) Interworking with thirdparty applications through Telephony Application Programming Interface (TAPI) and application programming interfaces (APIs) Nortel i2001, i2002 and i2004 Internet Telephones, Nortel i2050 Software Phone and i2050 Mobile Voice Client, wireless Voice over IP (VoIP) handsets H.323v.3, Meridian Customer Defined Networking (MCDN), Lightweight Directory Access Protocol (LDAP), Q.Signaling (Qsig), in-band and Digital Private Network Signaling System (DPNSS) Interworking with thirdparty applications through Telephony Application Programming Interface (TAPI) and application programming interfaces (APIs) Nortel Networks Succession 1000 is a fully distributed, Internet Protocol-Private Branch Exchange (IP- PBX) solution for enterprises that contains a telephony feature processing component based on the Meridian 1 feature set. The IP-based architecture of the system can distribute features and applications across corporate LAN and WAN environments, and support a mix of IP, analog and digital telephone sets. Starting with Succession software release 3.0, Nortel Networks provides a common software stream for Succession 1000 and Meridian 1 solutions. Release 3.0 also introduces a scalable, fully redundant version of Succession 1000 called Succession 1000M. This new version can support up to 10,000 IP users per Succession Call Server (depending on the processor used), and it has the ability to IP peer network up to 255 Succession Call Servers supporting up to tens of thousands of users. IP peer networking means that the system architecture provides direct, IP media path connections between users on different Succession Call Servers in the corporate WAN. The IP peer networking capabilities are enabled via software running on the Succession Signaling Server, a separate system component from the Succession Call Server. Depending on the system size for new sales, and on the Meridian 1 CPU card vintage when upgrading, a Succession 1000M call server can run on any of the following processors: Motorola processor used on Succession 1000, Succession 1000M Chassis and Succession 1000M Cabinet call servers 26 September

4 Motorola processor used on Succession 1000M Half Group, Single Group and Multi Group call servers Motorola 68060E processor used on Succession 1000M Half Group, Single Group and Multi Group call servers Intel Pentium II processor used on Succession 1000M Single Group and Multi Group call servers Note: New Succession 1000 systems sold to customers with fewer than 1,000 users are currently shipped with a Motorola processor. New systems sold to customers with more than 1,000 users will be shipped with an Intel Pentium II processor. Existing Meridian 1 users with one of the above processors can upgrade to Succession 3.0 software and realize the following enhancements: Investment protection when evolving to IP telephony Use of Nortel Succession Branch Office solutions Networkwide virtual office capability Web content displayable on the IP phone Access to multimedia applications, such as instant messaging, co-web browsing, file sharing, video conferencing and more. Call center, Integrated Services Digital Network (ISDN) and computer-telephony integration (CTI) feature enhancements Nortel digital phone-set feature enhancements Increased serviceability and system monitoring capability Support for the Nortel Personal Call Assistant application (personal productivity) Older Meridian 1 systems must be upgraded to support Succession 3.0 software. Note, however, that a Succession 1000M call server running a Motorola 68060E processor doesn t have the same real-time system capabilities as one running an Intel Pentium II, which means fewer IP users supported. System capacities are based on the processor used. When a Meridian 1 is transformed into a Succession 1000M, everything can be reused except old call processors (CP1 and CP2), Enhanced Peripheral Equipment (EPE) shelves and what these shelves contain. When you replace a Meridian 1 with a Succession 1000, all line cards can be reused, and almost all trunk cards can be reused except, for example, dual Primary Rate Interface (PRI) trunk cards, which are currently not supported on the Succession Media Gateway. A Meridian 1 platform can interwork with Succession 1000 via industry-standard ISDN PRI connectivity, or over IP using H.323 signaling protocol. Integration of the two platforms is enhanced with the use of Nortel s Meridian Customer Defined Networking (MCDN) software for feature transparency between the two systems. This allows existing M1s to be left intact, and Succession 1000s to be added at other points in the network. The interworking of Meridian 1 and Succession 1000 over IP is supported via an upgrade to Meridian 1 s IP trunk card firmware, or by transforming a Meridian 1 into a Succession 1000M. 26 September

5 Nortel can support IP peer networking capability between Meridian 1 and Succession 1000 systems. The full IP peer networking capability requires software running on the Succession Signaling Server, which supports direct IP connections between IP stations on different Call Server platforms over an IP network, and utilizes MCDN capabilities on top of the standard H.323 protocol. Since the IP connections are direct connections, the established Internet Telephone Gateway (ITG) Line and Trunk Cards in the Meridian 1 are converted to Succession Media Gateway Cards via a software upgrade. Succession 1000 Architecture Call Server The Succession Call Server is the brains behind a Succession 1000 system. It runs the Succession 3.0 software on an embedded real-time VxWorks operating system and provides the call processing features for the phones and trunk interfaces when the system is operating in standard mode. The Call Server comes in two implementations depending on customer size and requirements: Succession 1000 Call Server is a good fit for midsize offices with stand-alone or networked sites, supporting expandability for 100 to 1,000 users. Its 19-inch, rack-mounted form factor integrates well with the data center. Succession 1000M Call Server addresses the needs of mid- to large-sized enterprises with port scalability of up to 10,000 users. The system comes standard with a redundant core processing architecture for greater system reliability. Succession 1000 supports a comprehensive set of high-value telephony features and advanced services, such as CallPilot unified messaging, corporate directory, music-on-hold, recorded announcements, attendant console, instant messaging, video, multimedia collaboration, Web content on IP phones, call center and interactive voice response (IVR) functionality. Signaling Server The Signaling Server is an industry-standard server running several signaling applications that communicate with other system elements across the IP network. The Signaling Server also runs on the VxWorks operating system, and can be installed in a load-sharing redundant configuration for higher scalability and reliability. Software applications running on the Signaling Server include the following: Internet Telephone Terminal Proxy Server (TPS) a signaling proxy software component for registering and communicating with Internet telephones. H.323 Gateway Signaling Software provides an industry-standard H.323 signaling interface to H.323 gateways and PBXs that act as H.323 gateways to allow standards-based virtual trunk connections across the IP WAN. H.323 Gatekeeper Software the Gatekeeper is the traffic cop of the H.323 IP telephony world. For calls to be connected across the IP WAN, the Gatekeeper must provide a valid IP address of the closest H.323 gateway to the called party based on the network numbering plan. The network numbering plan is administered via an on-board Web server within the Signaling Server. The Gatekeeper software must be equipped on at least one Signaling Server in a multinode network to support IP peer networking. As an option, a secondary Gatekeeper can be provisioned in hot standby mode for higher reliability. The secondary Gatekeeper automatically synchronizes configuration data with the primary Gatekeeper. Succession Media Gateway 26 September

6 Distributed or integrated in a standard IPE (Intelligent Peripheral Equipment) shelf, Succession Media Gateways provide the necessary media mapping and transcoding functions to allow IP networks and circuit-based networks to be connected. This includes compression, silence suppression and echo cancellation mechanisms as necessary. The distributed Succession Media Gateway is designed in the form of a 19-inch, rack-mountable chassis that supports a Gateway Controller card and four universal card slots for flexible configurations of trunk/line, application and Voice Gateway Media cards. One four-slot expansion chassis per Gateway is allowed, bringing the total number of configurable card slots to eight per Media Gateway/Media Gateway Expansion combination. Succession Media Gateways can be deployed wherever they are required, and can evolve independently of the underlying networking infrastructure. They avoid adding expensive and unreliable voice ports to existing routers which, as part of the networking software environment, frequently require fixes and upgrades. Frequent router hardware replacements also result in a total cost of ownership spike in the fourth year of ownership, unlike IP telephony media gateways that are designed for a longer life-cycle, indicative of typical voice products. Meridian 1 peripheral equipment shelves can also provide the Succession Media Gateway function by using the same Voice Gateway Media Cards. The cards are used anytime an IP and time-division multiplexing (TDM) device are connected together. They are equipped with Digital Signaling Processors (DSPs) that perform media transcoding between IP voice packets and TDM-based devices. The Media Cards also provide echo cancellation and compression/decompression of voice streams. Voice Gateway Media Card software can run on either a 32-port, Intel-based platform, or the 24-port, Pentium-based ITG platform introduced in Succession CSE 1000 release 1. Succession Branch Office Solutions Succession Branch Office The survivable Succession Branch Office allows groups of users to be distributed across an IP WAN to branch office sites that have seamless feature and application transparency with the main site. The Succession Branch Office gateway provides access to an array of PSTN trunk types, as well as line interfaces located at the branch office. IP phones at the branch office are managed from the main site and register with the main site s Signaling Server. Though the signaling from Branch Office phones will cross the IP WAN, IP voice paths are directly connected so no wasteful tromboning (a trunk call that is transferred back out on a trunk over the same physical path on which it arrived) will occur if calls can be connected locally. Succession Branch Office supports the same analog and digital line and trunk cards as that of the main site, Succession Media Gateways. One of the key differentiators of the Succession Branch Office is its survivability. This feature allows IP phones that are centrally managed at a central Call Server to failover to a survival mode operation, retaining all of the features and numbering plan that are available during normal mode operation. The Succession Branch Office survivability feature engages automatically if the IP WAN fails. The IP WAN is then regularly monitored until the WAN comes back up, and the system then automatically reverts to normal operation. Succession Branch Office is cost-optimized for branch locations supporting from 80 to 400 users. Succession Survivable Remote Gateway Any enterprise that needs to support very small, remote offices over IP and is looking for centralized management will benefit from the Survivable Remote Gateway. Succession Survivable Remote Gateway 26 September

7 extends desktop feature and user interfaces to remote users and gives them full access to the same applications as the main site. CallPilot, Symposium Call Center and other applications can be seamlessly shared by remote users to deliver advanced features and functionality at even the smallest remote offices. The Survivable Remote Gateway allows distribution of trunking across the WAN so remote users can get a dial tone from their local central office (CO), or from any other IP telephony gateway hosted by Succession Local telephone numbers can be published, supporting a local presence within the community that the remote office supports. This capability can also reduce unnecessary toll charges and provides required local trunking for Emergency 911 calls. Additionally, the Survivable Remote Gateway provides a full suite of IP-based data and routing capabilities, including Network Address Translation (NAT), Dynamic Host Configuration Protocol (DHCP), Web caching and firewall. The Survivable Remote Gateway is cost-optimized for branch locations supporting from 5 to 50 users. User Access Terminals Standards-based, Nortel i2000 Series IP phones support robust features delivered by Nortel Networks call servers and connect directly to a LAN via a 10/100 Base-T RJ45 connector. The IP phones provide operational benefits by allowing a user to move their IP phone to a new location, retaining the identity of the phone, and reconnect it to the network anywhere or anytime without administrative involvement, freeing system administrators to focus on more mission-critical network responsibilities. i2001 Internet Telephone The new i2001 Internet Telephone is an entry-level, single-line IP phone with display and hands-free capability for light telephone users, or for locations such as a lobby, cafeteria or hallway. i2002 Internet Telephone The display-based i2002 Internet Telephone provides four self-programmable soft keys for line, feature or autodial access. Ideally suited for moderate call volume users, such as office professionals and technical specialists, the i2002 supports the same feature set that is available with the i2004 IP phone, and features an integrated Ethernet switch for shared LAN access of a colocated desktop PC. i2004 Internet Telephone Ideal for managers, executives and office administrators, the i2004 Internet Telephone is a multiline phone that features a large 5 24 liquid crystal display (LCD) screen complete with navigational keys to scroll the screen, and a high-fidelity, full-duplex speaker phone. The i2004 is equipped with six programmable, self-labeling line or feature keys (expandable to 12 in shift mode), and four interactive soft keys that provide access to a breadth of telephony features and applications, such as CallPilot Unified Messaging. The i2004 supports automatic IP address assignment and is available with an integrated Ethernet switch to support shared LAN access to the desktop. The integrated 10/100 Base-T Layer 2 switch prioritizes voice traffic to ensure high-quality speech, and it reduces costs by conserving wiring closet ports and eliminating the need for separate cable drops to the desktop. i2050 Software Phone The i2050 Software Phone transforms a PC into a full-featured telephony communications platform. Ideal for call center agents, road warriors and casual telecommuters, it is designed to meet diverse customer needs as a primary desktop telephone, a supplemental desktop telephone or a telecommuting device. A 26 September

8 software-based solution offering superior audio quality with a Nortel Networks USB headset, the i2050 delivers the same services and capabilities as the i2004 IP phone including advanced applications such as unified messaging. In addition, the i2050 supports powerful directory capabilities, with instant access to data that can either be stored locally on the PC or accessed remotely. i2050 Mobile Voice Client The i2050 Mobile Voice Client enhances user mobility by supporting wireless IP telephony calls for handheld PCs. With i2050 Mobile Voice Client, users can experience full mobile desktop capability via standard off-the-shelf, handheld PC devices and standard interfaces. It delivers the full set of Succession 3.0 software call features via a visual representation of an i2004 IP phone. Features such as speed-dial buttons, multiline phone and personal feature settings are all available on the i2050 Mobile Voice Client. Digital Telephones Offering investment protection and a range of business telephony features, Nortel M3900 Digital Telephones provide a range of desktop solutions when implementing Succession 1000 systems. Standard analog phones are also supported on the system. Succession 1000 Applications The Nortel Networks Succession 1000 portfolio supports a range of key telephony applications including conference services, recorded announcements, follow-me services, and central and auto attendant services. It also supports third-party applications from Nortel Network business affiliates via TAPI and standard telephony APIs. The following is an overview of key applications that drive Succession 1000 value: CallPilot is Nortel s unified messaging solution that expands on the core functionality of Meridian Mail by delivering voice, fax and messages to a single multimedia in-box at the user desktop (that is, Microsoft Outlook) via TCP/IP connectivity to an enterprise LAN or WAN. Optionally, CallPilot can be implemented as a voice messaging system and then enhanced to support multimedia messages. It provides three options for message management touch-tone, speech recognition and PC access through the purchase of Nortel keycodes. CallPilot uses a multiple message store architecture (that is, it stores voice and fax messages separate from ), and supports a range of servers and clients including Microsoft Exchange/Outlook, Novell GroupWise, Lotus Notes, Qualcomm Eudora Pro, Microsoft Outlook Express and Netscape Messenger, among others. CallPilot also allows end-user interaction via Web browsers, such as Microsoft Internet Explorer, Netscape Communicator and Netscape Navigator. Nortel Networks Customer Contact and Voice Portal Solutions deliver service across all touch points of an enterprise business. The extensive portfolio includes the Symposium line of contact center management products, as well as Periphonics and Nortel Networks Interactive Voice Response (IVR) and advanced speech recognition solutions. Nortel Networks Integrated Applications Portfolio offers a suite of productivity enhancing solutions that can be extended to users transparently across a distributed IP telephony network: Integrated Personal Call Directory allows users to manage their incoming calls by setting up callforward hunting scenarios that direct callers to the user s choice of telephony devices. 26 September

9 Integrated Recorded Announcement is a multifeatured digital announcer that provides callers with 24- hour access to recorded information, such as a company s business hours, locations or advertisements. Integrated Conference Bridge is a high-quality audio conference bridge that delivers cost-effective, interactive, multipoint conferences accessible from any telephone, anytime, anywhere. Integrated Call Assistant offers cost-effective automated attendant capability with custom-recorded announcements to appropriately route callers; it offsets the need for operator assistance. Multimedia Communication Server (MCS) 5100 is Nortel Networks Enterprise Multimedia and Collaborative Applications platform, based on the carrier-grade Succession IMS product. MCS 5100 utilizes open, industry-standard hardware to evolve PBX and IP-PBX networks to multimedia and collaborative communication networks. MCS 5100 is an application server that enables enterprise users to take advantage of next-generation tools that improve productivity, reduce downtime and facilitate fast decision making. MCS 5100 brings together advanced communication and collaboration capabilities within a single product portfolio including: Collaboration Services (conferencing, whiteboard, file exchange, Web push and co-browsing) Mobility/Distributed Workforce Services (personalization, presence, instant messaging, call screening, call logs, call management and routing) Converged Desktop Services (third-party PBX/Centrex interworking) Programmability (API toolkit extensibility). Net6 Transformation Gateway enables Succession 1000 to support the delivery of business data applications to IP phones. Nortel Networks strategic partnership with Net6 produced the Net6 Transformation Gateway a tool that allows Web content and XML-based applications to be tailored and displayed on the screens of Nortel Networks IP phones and wireless clients. With Net6, the Nortel IP phones become information appliances capable of supporting applications such as access, customer order status, inventory reporting, price checks, market share tracking, conference room bookings, airline schedules, restaurant listings and university class schedules or security alerts, in addition to voice communications. Succession 1000 Element Manager, a web-based system management tool focused on single-site Succession 1000 and associated components, is a member of the Nortel Networks Management products portfolio. Each Succession 1000 system comes equipped with Succession 1000 Element Manager, which provides an onboard Web-management interface that is also accessible from Optivity Telephony Manager (OTM). Succession 1000 Element Manager is used specifically for system configuration, maintenance and reporting. It enables administrators to define trunks and routes, set IP telephony capabilities such as quality of service (QoS) levels, monitor Succession Signaling Server data and define gatekeeper functionality at an individual system level. Maintenance can also be performed via the Element Manager, including backup and restore tasks, and managing software updates. Nortel Optivity Telephony Manager (OTM) is a suite of management tools for configuring, controlling and managing Succession 1000 and Meridian 1 systems in a network. Access to multiple sites and systems from a single interface is supported, as are both a Windows interface and a Web interface. The software suite runs on a dedicated OTM server running MS Windows NT Server or Windows 2000 Server. 26 September

10 Three packaged configurations are available: General, Enhanced and Premium. A Telecom Billing System (including call tracking) is available as an option for all packages. Depending on the package, OTM features include LDAP-based directory integration, station administration, call accounting, call tracking, traffic analysis, maintenance, alarm management, centralized management, multiuser capability, customizable reporting, import/export utility, scheduled tasks and disaster recovery tools. Succession 1000 IP Power Solutions include the haystack T-PWR Power over Ethernet Switch, a new member of the BayStack switching family. The BayStack 460 is a resilient, secure, stackable wiring closet switch that provides Power over Ethernet (POE) capabilities to IEEE P802.3af-compliant devices, such as IP telephones, wireless access points and net cameras. It eliminates the need to plug IP devices into separate power outlets. With BayStack 460, any standards-compliant device can be powered, including Nortel i2000 Series Internet Telephones. For enterprise customers wanting to power Nortel i2000 phones from the LAN and leverage an existing Ethernet switch in their wiring closet (such as the haystack 450), Nortel Networks Power over LAN Hub adds power to standard Category 5 LAN wiring drops for data terminal equipment, including IP telephones. Power is supplied on an as-needed basis with a software-based automatic load and faultsensing algorithm. The unit fits into a standard 19-inch wiring closet rack and provides a cost-effective way to centralize power to Nortel Internet Telephones. The Power over LAN Hub can be powered from ordinary commercial alternating current (AC) power; its power supply can automatically switch to use any type of AC power from 90 to 240 volts alternating current (VAC) 50/60 Hz, and it can be operated with any commercially available universal power supply (UPS). The i2000 Series Internet Telephones can also be powered by a 16VAC, 500mA, local AC power transformer. Local power transformers can be ordered separately to accommodate country-specific line voltage requirements. Or in North America, the transformer can be ordered with the i200x Internet Telephone boxed package. Contivity Secure IP Services Gateways are a next-generation family of products designed to deliver security and IP services in a single integrated platform. Contivity provides dynamic routing services over encrypted virtual private network (VPN) tunnels, stateful firewall, encryption, authentication, policy and bandwidth management services all within the same device. The comprehensive set of Contivity softwareenabled IP services allows enterprises to deploy needed services without the cost of hardware upgrades. Contivity s IPsec-based IP-VPN services deliver critical capabilities for secure IP telephone transmission, including encryption, authentication and data integrity services. Nortel s Secure Routing Technology (SRT) addresses the dynamic routing and scaling requirements of deploying large-scale, secure VPNs. SRT on Contivity can be utilized to support the security requirements of Succession system deployments, while preserving the same level of performance, scalability and availability expected of telephony-grade dynamically routed IP networks. Mission-Critical Performance Nortel Networks Ethernet Switching portfolio of products deliver end-to-end support for quality of service (QOS), power over Ethernet ports and simple comprehensive configuration tools for implementing mission-critical IP telephony applications. The Nortel Passport 8600 and 1424T combined with the Business Policy Switch, BayStack 460 and 470 supply the infrastructure designed to handle bandwidth-stringent applications. The Nortel Passport WAN portfolio provides carrier-grade, multiservice switches that deliver a variety of data, voice and video 26 September

11 services. Nortel Networks LAN portfolio provides the elements necessary to implement wire speed traffic classification, policy enforcement and filtering within a network. Pricing Nortel Succession 1000 pricing starts at about $700 per line. GSA Pricing Yes. Competitors Alcatel (OmniPCX Enterprise) Avaya Definity Servers, ECLIPS MultiVantage Servers Cisco Systems (CallManager) NEC (NEAX 2000 IPS, NEAX 2400 IPX) Siemens (HiPath 4000, HiPath 5000) Mitel Networks (3300 ICP) Strengths A major advantage of Succession 1000 is that it evolved from the Meridian 1 software base. With release 3.0, the system software for both solutions becomes one software stream. Nortel targets the Succession 1000 as the IP-PBX of choice for established Meridian 1 customers looking to expand their networks with an IP telephony solution, but still retain the familiar functionality of Meridian 1. Succession 1000 release 2.0 or later delivers IP-based features and functions equivalent to the features and functions in Meridian 1 X11 release Succession 1000 can IP network with Nortel Meridian 1 and Nortel Business Communication Manager (BCM) systems, along with Nortel Succession Branch Office solutions. Succession 1000 supports Digital Private Network Signaling System (DPNSS) for multivendor system networking applications. With release 3.0, Succession 1000 will interwork with Nortel s Succession Multimedia exchange (MX) solution, now called the Nortel 5100 MCS, which will enable larger enterprises to integrate complex multisite, multivendor IP and time-division multiplexing (TDM) PBX networks. The porting of established Meridian 1 applications, such as CallPilot and Symposium Call Centers, to Succession 1000 has been achieved. Limitations There are some concerns about existing Meridian 1 users needing a hardware upgrade before migrating to Succession 1000, which could make it an expensive proposition. Prior to release 3.0, a Succession Call Server supports only 1,000 stations per server. 26 September

12 Digital trunks are supported on the Succession Media Gateway, but not on the Media Gateway Expansion. However, a few trunk cards, for example, dual PRI trunk cards, are also not supported on the Succession Media Gateway. No Succession 1000 support for Meridian Mail; CallPilot is the system messaging application. Note: Customers with Meridian 1 systems in their network can use Meridian Mail on Meridian 1 to provide messaging services to users on Succession 1000 via a feature called Network Message Service. The enterprise data network must meet some minimum requirements for bandwidth, packet loss, and roundtrip delay and jitter in order to support the distribution of Succession Media Gateways. Nortel Optivity Telephony Manager (OTM) software requires a dedicated server running MS Windows NT Server or Windows 2000 Server. Insight Release 3.0 and the Succession 1000M system scale up into the enterprise space capacitywise, supporting several thousand analog, digital or IP users, depending on enterprise requirements. Prior to this release, the scalability of the Succession 1000 (1,000 users) limited its use for larger enterprise customers. The system offers solid networking and survivability capabilities, and provides a way for Meridian 1 customers to migrate to IP telephony (albeit with some upgrade cost concerns). Enterprise customers typically look to deploy the IP-based Succession 1000 in a greenfield (new site with no existing equipment) approach, as well as a solution for expanding their established networks. In both cases, the Succession 1000 s IP-based architecture is implemented by enterprises looking to take advantage of the efficiencies associated with IP telephony today one-network infrastructure, enhanced distributability and mobility (remote sites, teleworkers, mobile workers), centralized system administration, toll savings on enterprise site-to-site calls, and enhanced communications applications (unified messaging [UM], unified communications [UC], conferencing, collaboration). 26 September