and voice cards. Some disadvantages are the ability to scale the system and a dial tone that's dependent on NT, which doesn't offer the same uptime as a switched phone network. Until recently IP PBXs have been targeted at offices with 100 users or less, but Alcatel recently announced a system that incorporates gateway and call processing in a single device and can accommodate up to 50,000 users. 3Com, Lucent and Spotsylvania dial up, Spotsylvania, VA up dial SpotsylvaniaSpotsylvania up, dial Virginia, Spotsylvania dial up
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