Nortel's 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.

• Application Server 5200
  With the Nortel Application Server 5200, [formerly known as the Multimedia Communications Server 5200 (MCS 5200)] Service Providers can leverage the innovation of the Internet to deliver new multimedia communications services that will radically enhance people's communications experience.
• IP Phone 2002
  The IP Phone 2002 is an intermediate-level, multi-line IP Phone (supports four self-programmable line/feature keys) with mid-sized display and integrated 10/100 switch which is designed for knowledge workers and administrative staff with moderate call-activity needs.
• IP Phone 2004
  The IP Phone 2004 is a professional-level multi-line IP Phone with a large display and integrated 10/100 switch and is designed for knowledge workers, managers and senior administrative personnel with more demanding call requirements.
• Multimedia Communication Server 5100
  The Multimedia Communication Server (MCS) 5100 is a leading unified communications solution which seamlessly integrates IP Telephony, multimedia conferencing, instant messaging (IM), presence and other collaboration tools for employees — anywhere, anytime, increasing user mobility, enhancing productivity, improving the effectiveness of communications and reducing communication costs.