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Hardware supported by chan-capi

Basically all cards should work, which
  • provides a CAPI 2.0 compatible interface.

Most of the cards don't provide this interface, but their drivers do.
Here is a list of cards known to be working:

Dialogic / formerly known as Eicon Networks

DIVA Server from [ Dialogic] (V and non-V cards)
  • DIVA Server BRI (basic rate interface, 2 channels)
  • DIVA Server 2FX (basic rate interface, 2 channels)
  • DIVA Server 4BRI (four BRI)
  • DIVA Server PRI (primary rate interface, 30 channels)
  • DIVA Server E1/T1 (like PRI 30/23 channels)
  • DIVA Server 4PRI (four PRI)
  • DIVA Server Analog 4P (4 POTS lines)
  • DIVA Server Analog 8P (8 POTS lines)
the V(oice)- variants don't support faxing with onboard DSPs

special features supported by Dialogic DIVA Server cards with chan-capi

  • onboard DSP DMTF detection.
  • onboard DSP DTMF generation.
  • onboard DSP echo-cancel.
  • onboard DSP faxing.
  • Line-Interconnect: direct bridge of b-channels even across cards via bus master DMA.
  • RTP: onboard DSP processes RTP frames including anti-jitter-buffer and different codecs (chan-capi-0.7 and better)
  • NT-mode: card act as ISDN-switch (not BRI Rev1, 2FX). A BriCrossCable is needed for that.


ISDN cards by AVM
  • FritzPCI
  • Fritz USB 2.X
  • B1
  • C2
  • C4


  • all supported cards by mISDN, but the mISDN-CAPI interface may be incomplete


  • PrimuX ISDN cards from Gerdes AG (Since a proprietary libcapi20 is provided by vendor for these cards, you cannot mix with CAPI cards of another vendor. This also makes debugging difficult.)