IP telephony applications, such as managing your phone from your desktop PC, multi-line call control and automatic call distribution. IP PBXs are usually NT servers with telephony software 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 Miami broadband , Miami, TX broadband MiamiMiami , broadband Texas, Miami broadband
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