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The Digium TE131F telephony card easily plugs into a PCI Express slot. A single T1 port connects your phones and other devices to your PBX. This card supports up to 24 simultaneous calls over T1.
An echo cancellation module cannot be installed onto the Digium TE131F. This card does not support it. As is, this PCI Express card offers a highly reliable, high-performance tool for telephony.