When Cantor Fitzgerald needed to rebuild its infrastructure following the Sept. 11 tragedy, the firm had to make a decision about its telephones. It had been piloting Voiceover-Internet-Protocol technology with some success, so when the need came to rebuild, it swallowed VoIP: hook, line and sinker. "We love it," says Matt Claus, chief technology officer at New York City-based Cantor and its sister company eSpeed Inc., which develops electronic marketplaces and trading technology. "We're using VoIP for essentially all of our internal voice communications with both firms."
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