Digium 1TE435BF

Type: Digital Card
T1/E1 Ports: 4
Bus Type/Connector: PCI-Express
Low-Profile: Yes
Half-Length: Yes
Compatible echo cancellation module: VPM128
Hardware echo Cancellation Included: Yes

Digium's quad span digital interface cards support 96 (T1 / J1) or 120 (E1) connections to PSTN trunks over four spans (digital circuits). Built exclusively for use with Asterisk and Asterisk-based communications systems, the quad span digital cards provide the best value in digital connectivity.
Quad span digital cards are available in PCI and PCI-Express form factors. All quad span models can be combined with an Octasic DSP-based echo cancellation module from Digium to provide effective hardware echo cancellation across all channels.