"This guide answers some of the most commonly asked questions about VoIP, including: What is the difference between Internet telephony and business voice over IP?; What are the current options for implementing business voice over IP?; How reliable is business voice over IP today? How is the voice quality?; What are the ramifications of VoIP in terms of bandwidth demands?; Will different VoIP systems interoperate?; What is the role of a Private Branch Exchange (PBX) and can it reside on a data network as a mission-critical application server?; What equipment investments or changes to the existing data network are required to implement business voice over IP?; Can VoIP co-exist with other mission-critical data applications already on the network?; What types of applications or advantages will VoIP provide today and in the future?" MCK white paper, in PDF. Requires free registration.
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