No. 6: VoIP
By handling internal voice calls over the data network, enterprises can reduce voice expenses by about 10 percent by just removing internal voice calls from the public switched telephone network, according to Jim Browning, vice president and research director at Gartner. "A multisite midsize business deployed a VoIP system connected to its MPLS. With free calls between sites, the least cost routing across the WAN, new rates for long distance and the elimination of more than 100 analog lines, the company has achieved a 40 percent reduction in telephone costs, which equates to about $250,000 in savings per year," he said.
Joel Wolfe, director of information services at J-W Energy Company said: "We saw a 75 percent reduction in physical phone lines utilizing SIP trunking over existing WAN. This equates to approximately 50,000 per month in telecommunication savings." Kenneth Munson, director of IT at Parr Lumber Company, noted similar successes.