
May 1998
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Summa Four
www.summafour.com
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Summa Four is a leading provider of open, programmable
switches that enable telecommunications service providers worldwide to build intelligent,
flexible networks. The Summa Four site offers links to corporate information, partner and
product information, support and training, employment opportunities, as well as a link to
their Project Sigma white paper on standards-based open switching.
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Electronic Messaging
Association (VPIM)
www.ema.org
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The EMAs site features a series of links devoted to
the organizations calendar, publications, purpose/vision, and work groups, including
the Voice Profile for Internet Mail (VPIM) work group. Following the VPIM link brings you
to the work groups page, which includes the goals of the group, press information,
and technical specifications of VPIM. Also included is a link for users to join the VPIM
group.
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