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Nortel has fully embraced the Session Initiation Protocol (SIP) for delivering next-generation multimedia communication services.
Nortel is an industry leader and innovator removing barriers to efficiency, productivity and growth. Leveraging our broad technology expertise, sophisticated network know-how, and large installed base of service provider and enterprise customers, we're transforming networks to enrich global communications. Nortel Networks is creating innovative, packet based networks that are more robust, intelligent and secure, and provide growth opportunities for our customers by enabling new services and applications.
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Today, we're delivering networking and communication services and infrastructure to service providers and enterprises in more than 150 countries. Customers in the United States, Europe, Asia-Pacific, Caribbean and Latin America, the Middle East, Africa, and Canada benefit from our commitment to technology leadership and our culture of innovation.


Multimedia Communications Portfolio
Nortel Multimedia Communications portfolio includes carrier-hosted and enterprise multimedia services solutions that unleash communications simplicity and productivity for enterprise and residential subscribers. This portfolio leverages the emerging industry standard Session Initiation Protocol (SIP) to deliver multimedia services including voice, call management, desktop video calling, collaboration tools, and personalization services. More >>>
Nortel Multimedia Office Client for MCS5100/5200
Nortel's new Multimedia Office Client is a stand-alone solution that leverages the 'Office Anywhere' capabilities of Nortel's Session Initiation Protocol (SIP)-based Multimedia Communication Server 5100 and 5200 to provide business users anywhere, anytime access to a full range of multimedia business communications. By integrating real-time multimedia communications within Outlook, and enabling these services to be used with existing business voice systems, the Nortel Multimedia Office Client can greatly simplify and enrich the business communications experience.
The Multimedia Office Client will reside within Outlook 2003 as a toolbar that enables users to manage and personalize voice, video and text communications, and to initiate calls from a desktop phone or headset simply by clicking on a contact name - all from within Outlook 2003. This plug-in, which can be deployed as an enterprise owned or service provider hosted service, goes beyond voice or text to provide a rich multimedia communications experience. The integrated video and collaboration services can use existing Centrex or enterprise voice systems for audio, complementing business voice services currently in use. More >>>
Multimedia Communication Server 5100
The Nortel Multimedia Communication Server (MCS) 5100 is a multimedia communications and collaboration applications delivery solution for Enterprises that seamlessly delivers converged multimedia services to employees regardless of their work location. The MCS 5100 drives VoIP networks, delivering multimedia and collaborative applications to the enterprise on an "open" platform that supports industry-standard protocols, including SIP and H.323. More >>>
Multimedia Communication Server 5200
The Nortel Multimedia Communication Server 5200—which seamlessly integrates voice with video, collaboration, and presence services—enables service providers to deliver hosted multimedia communications services to create new revenue-generating opportunities. These Session Initiation Protocol-based (SIP), next generation, multimedia services enhance the ability for both enterprise and consumer end-users to communicate and collaborate more effectively and efficiently. More >>>
Click here for a flash overview of the MCS 5200 >>>
Communication Server 1000
The Nortel Communication Server 1000 is a full-featured IP telephony solution for the medium to large enterprise environment (40-10,000+ users) that provides robust, survivable, scalable IP-based telephony services capable of being distributed across IP Wide Area Networks (WANs) delivering a full range of proven applications. More >>>
Communication Server 2100
The Nortel Communication Server 2100 is a full-featured IP telephony solution for the large to campus enterprise environment (2,000-200,000 users) that provides robust, survivable, scalable IP-based telephony services capable of being distributed across IP Wide Area Networks (WANs) delivering a full range of proven applications.
Communication Server 2000 - Compact
The Nortel Communication Server 2000 - Compact is a scalable, reduced-footprint, Superclass softswitch built on the commercially-available Compact PCI platform. Delivering a comprehensive set of Class 4 & 5 features, this carrier-grade softswitch is applicable for new network builds and packet evolution. Based on open hardware and software and supporting industry-standard protocols, it is ideal for Service Providers and Cable Multiple Systems Operators. More >>>
Alteon Application Switches
Nortel Alteon Application Switches enable application optimization, delivery, and high availability through the use of sophisticated application/device load balancing, intelligent traffic management, application redirection, application-layer security, security acceleration, and bandwidth management. For example, in a VoIP (SIP) call server optimization scenario, Alteon Application Switches can dynamically distribute load among multiple SIP Proxy servers using SIP Call ID information. This solution enables resilient VoIP services by ensuring call processing resources are 'always up', capacity additions can be made without downtime, and call traffic is distributed across all call servers to optimize performance and utilization. More >>>