Thirty-two (32) Channel Hardware Echo Cancellation Module for use on A4x and A8x series cards. VPM032: Up to 32 channels. The Digium VPM032 echo cancellation module is compatible with A4x and A8x series cards. When Asterisk is connected to a PSTN, voice echo is possible. While software-based solutions are available, they aren't always effective. This echo cancellation unit attaches to the FXO / FXS card and provides an effective means of improving voice quality.
Features and Functions
- Channels: up to 32
- Basis: DSP
- Digium Card Compatibility: A4x and A8x series.