When preparing to use VoIP service, the hardware is not the only thing to take into consideration because you will also need VoIP software. You can think of VoIP software as the tool used to turn your computer into a telephone. You can benefit from features of your current phone service such as voice mail and call forwarding. Your software package will also meet your organizational needs for your service.
The part of your software that prepares voice samples for transmission is the Voice Processing Module. This module should support the following: (Some of the most important)
· A PMC Interface which will receive samples from the telephone interface and forward them to the VoIP software
· Idle Noise Detection: When there are no signals to send this will suppress voice packet transmission.
· Packet Voice Protocol which encapsulated compressed voice and fax data to be sent over the network
· Echo Cancellation which reduce or eliminate echoes