Digium 4 PORT Digital PRI Cards
Quad Span
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 factor. Digium cards are compatible with all versions of Asterisk using the DAHDi driver framework.