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 Cisco have all announced Norborne business internet access, Norborne, MO internet access business NorborneNorborne internet access, business Missouri, Norborne business internet access
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