Applications of voice over ATM

The perfect platform is offered by multimedia workstations, which combine voice communication and visual data, such as videoconferencing.
The second most common method is to provide a direct connection of telephone, fax machine or modem to an ATM network switch. The third method is to place voce over ATM through a direct connection of a PBX voice switch to an ATM network switch.

Voice compression
Since ATM networks benefit from the high bandwidth, voice compression is not essentials. Nevertheless, voice compression is necessary in hybrid ATM Frame Relay networks, because Frame Relay uses voice compression hence ATM must for that reason be capable of supporting voice compression that will work with VoFR equipment.