Update on Excel and VocalTec: data.com Excel, Lucent, and Nortel, meanwhile, sell suites that combine circuit-switched gear with data-oriented add-ons. Excel's Integrated Voice Gateway, for example, is a repackaged version of its EXS programmable switch, which has a good record in the telco world as a platform for creating enhanced circuit-switched services. To turn it into a mediation device, Excel spins out call control functions to VOIP, SS7, and other gateway devices it supplies, all of which can be configured according to carrier needs (Excel OEMs a VOIP gateway from Vocaltec Communications Ltd. [Herziliya, Israel]). The suite also comes with an Excel service creation and management platform designed to bridge SS7 and IP signaling.
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