Polycom EF2201 Telephone Interface

The Polycom EF2201 Telephone Interface: 

The Polycom Vortex EF2201 is the next generation of DSP-based conference telephone interfaces.  It features a complete digital interface to other Vortex products using a single cable – analog input and output connections are not required.  In addition to providing crystal-clear telephone audio to all participants in a meeting, the EF2201 significantly reduces background noise coming in on the telephone line to keep unwanted sounds from interfering with your conference. The full cross point matrix allows users to determine how the input and output signals will be used throughout a system.  Settings are configured using the Conference Composer software (provided) and can be stored as user presets.