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REFERENCES
www.telecommunications.com www.internettelephony.com www.net2phone.com www.netspeak.com www.rockwell.com www.vocaltec.com www.voxspeak.com www.neoseeker.com www.microsoft.com www.idt.com www.deltathree.com www.phonejack.com www.itxc.com www.transnexus.com www.micom.com www.viennasystems.com
