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The Digium VPM064 echo cancellation module is compatible with A8-series analog cards and the TE235 T1 card. This card solves the voice echo problem commonly associated with connecting a PCI card to a PSTN. While software-based solutions are available, the Digium VPM064 is a more reliable hardware-based module. Attach this module to the PCI or PCI Express card to dramatically improve voice and audio quality.
Note: compatible with 8-port A8A and A8B cards, and the 2-port TE235 card.
