proprietary boxes; also expandable routers or software and expansion cards for Windows NT servers. One of the front-runners in VoIP, Cisco is taking a modular approach with a voice-over-IP card that fits its routers. Cisco says all of its products can easily be equipped for voice and that voice packets can be guaranteed via quality-of-service (QoS) policy implementation on a Cisco-switched network. Lucent, Nortel Networks and Siemens offer similar strategies for Central City 56k , Central City, KY 56k Central CityCentral City , 56k Kentucky, Central City 56k
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