When implementing telecommunications systems, companies and condominiums have very specific needs in accordance with the size of their structures and the needs of their users. In this scenario, there are several telephony interface options that can be used, the most common being IP and analog. When receiving the signal from the chosen carrier, the trunk line distributes it to the users extensions.
IP Extension is the digital telephony system that uses Internet protocol to transmit voice. In addition to its superior audio quality, voice over IP provided a reduction in telephone expenses, and allows for greater freedom with interurban and international calling Advantages like this provide companies greater integration with clients and suppliers, and for condominiums, it allows for ease in management.
Analog extension is the telephony system that transmits through analog signals, allowing for the use of conventional telephones with one line per number. The main advantage of using this interface is to be able to take advantage of existing infrastructure. Additionally, this can make it possible to reduce costs, since integration of voice and data is not required. The low cost of peripherals, management and maintenance are also differentials.