Digium's dual span digital interface cards support 48 (T1 / J1) or 60 (E1) connections to PSTN trunks over two spans (digital circuits). Built exclusively for use with Asterisk and Asterisk-based communications systems, the dual span cards provide the best value in digital connectivity.
Dual span digital cards are available in PCI and PCI-Express form factors. All dual span models can be combined with an Octasic DSP-based echo cancellation module from Digium to provide effective hardware echo cancellation across all channels.
Up to 48 (T1/J1) or 60 (E1) simultaneous calls
Supports T1, E1 and J1 physical interface connections
Optional 128ms hardware echo cancellation module
Protocol support includes: ISDN PRI, Robbed-Bit, CAS
Industry standard RJ-45 port
PCI Express form factors
2 ports / 2 spans
Asterisk and DAHDI supported (DAHDI 2.8 or later required for the TE235)
Switchvox supported (Switchvox 5.8.1 or later required for the TE235)
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