New Zealand Telecom has announced it will switch every phone in the country to the Internet-based VoIP system, starting in 2007. The company estimates it will take approximately five years to get every phone changed.
Voice over IP is moving rapidly, and the biggest benefit is reduced cost. A typical incumbent package of local and long distance calling in the U.S., using the old, 19th century phone system we currently have, cost between $40 and $50 on average. An equivalent VoIP package averages between $20 and $25. Savings are substantial for businesses with multiple phones. Another benefit is an increased set of services, like call forwarding and simultaneous ring, which are often included as part of the base package with VoIP offerings, but cost extra or are not available at all with the old 19th century phones.
Simultaneous ring is especially valuable for businesspeople who travel and/or have to be out of the office frequently. To set up the service, you enter two or more phone numbers (e.g. cellphone, home phone, etc.). Once the service is activated, when the primary phone number receives a call--typically your business phone number--all the phones you have listed will ring at the same time. The call is transferred to the first phone you pick up. It's a much more efficient version of call forwarding.