Add up to 24 (T1) or 30 (E1) crystal clear digital calls to your Asterisk system with a Digium single span interface card. Available in PCI or PCI Express form factor, the single span cards use state of the art technology for unsurpassed call quality and system compatibility.
Building a large-scale communications system with Asterisk? A Digium quad span card lets you up to four T1 or E1 circuits. That's a total of 96 (T1) or 120 (E1) concurrent calls. All quad span cards come with Digium's Exceptional Satisfaction Program (ESP) risk-free guarantee, a five year warranty and support for the optional VPMOCT064 echo canceller.
Supersize your Asterisk application with the TE820. Digium’s highest density card, the TE820 adds up to eight T1 or E1 connections. That adds up to 192 (T1) or 240 (E1) calls on a single slot. The TE820 gives you the power to build large-scale Asterisk® applications that require high-performance, cost effective digital connectivity.