In the early days of VoIP, the central issue facing the industry was whether voice quality could be effectively maintained using IP as the transport. Technology vendors, service providers and corporate network managers put a huge amount of effort into addressing this issue.

As a result, VoIP is now an attractive alternative to conventional analog voice and the PSTN. As real-world VoIP rollouts continue, however, a new set of challenges emerging. In particular, businesses are encountering a variety of unanticipated problems as they deploy VoIP to remote locations.