We guarantee that our card, working directly with DAHDI (no patch required), delivers the same sound quality and performance as the DigiumTM and SangomaTM cards while costing considerably less.
PRI cards today became a commodity since all manufacturers use FPGAs and the same OctassicTM DSP for their Echo Cancellation. Not only our cards perform at par with the larger manufacturers but they also offer the Innovative and Unique PCI/PCIe Rotation System (see video).Available in 4 port, use this card with any of the major open source platforms.
Video Demo: PCI to PCIe Switch
Dynamic Buffer Adjustment
Manual Interop
Field Firmware Upgrade
PCI/PCIe on same board
Works directly with DAHDI
Certified by
Also works with
Warranty Info

5 Years warranty

Key Features

  • SS7 Signaling supported
  • PCI and PCIe interface on the same card. Fully PCI 2.2/PCIe (X1) compliant
  • Four T1/E1/J1 ports with PCI-Express interface for high performance voice applications
  • Optimized per channel DMA streams and hardware-level HDLC handling unload the host CPU
  • Optional Octasic® DSP Echo Cancellation Module 128ms tail/channel (on all channel densities)
  • PRI Switch Compatibility: EuroISDN, Network or CPE, AT&T 4ESS, CAS Voice Modes
  • Interoperable with AsteriskTM, FreeswitchTM, YATETM, ElastixTM, TrixboxTM, FreePBXTM ...