Then you can hire a VOIP gateway service to connect to the outside world and make calls at low cost. Continue to learn more with: futurist. If the company has multiple sites can implement the solution so that all calls between sites are not recorded at all. The implementation of services such as caller ID, voice mail, voice mail, video conference between two or more participants, call forwarding and many more are available and each company is free to implement them. Some disadvantages of IP telephony VOIP technology offers a myriad of advantages, but also offers an occasional drawback that still have not been remedied and that slow down a little explansion the use of this technology. Power supply: IP telephony should not be very convenient if such a disaster were present when the power grid remain inoperative since this impossible turn on the computer or IP phone and router to make an emergency call. The circuit-switched networks do not have this disadvantage as it has no power or phones running following so that the voice over IP in its entirety to replace the analog phone should be built stable sources of energy. Exact geographical location of a call: If you achieve turn on the computer and call the emergency line, there would be no way to accurately trace the call to learn how to respond most effectively to the emergency.

It is perfectly possible to trace an ip address and place it in a broad geographical area but this can only inform us of the city where the call originated most of the neighborhood or street is not accurate. On the other hand the companies providing internet access to assign IP addresses to clients dynamically to make best use of limited amounts of IPv4 addresses which are currently available to the global implementation of the successor ipv4 ipv6. So the allocation of unique IP addresses for each dwelling would be needed, which would only be possible with the global introduction of next generation IP protocol IPv6 which allows each individual on the planet has an ip address the growing supply of services over copper wire: As did the ADSL and VOIP also exist a number of other services that make use of traditional phone networks such as relatives of service monitoring, home automation, television, radio, and other Services to may compete for the use of bandwidth and detract from a quality voice call over IP. So it requires a higher bandwidth and consensus among all vendors of services industries that employ the same channel to refine protocols or policies that ensure QOS (Quality Of Service) or quality of service based on services VOIP standards. Andres Sanchez I have served for more than six years as administrator of Linux systems and micro. I'm a fan apacionada free software and new technologies in general, extreme sports and languages. I practice a discipline known as the BMX flatland. Currently recido in Bogota Colombia from which development projects based on free software.