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chan_capi for Asterisk
chan_capi is a Common ISDN API 2.0 driver for Asterisk.

Because Asterisk only comes with isdn4linux support (which degrades your ISDN card to a voice modem) we have developed chan_capi. The current version supports more functions than chan_modem_i4l and has better audio quality with less latency.

Take a look at the list of implemented features.

chan_capi is released under the terms of the GNU general public license (GPL).

We greatly appreciate feed back to kpj@junghanns.net
You can find me at irc.freenode.net in #asterisk as kapejod.


Supported Platforms
  • Linux (capi4linux)
  • FreeBSD (CAPI 4 BSD)

    Download
  • chan_capi version 0.4.0 (Asterisk STABLE, CVS-HEAD)

  • Features
    + ISDN connection handling
    (CID,DNID, DID, DDI)
    + multiple Controller support
    + digital audio support
    + DTMF (soft/hardware)
    + CLIP/CLIR
    + early B3 connects
    (inband callprogress)
    + CD, HOLD, RETRIEVE, ECT
    + overlap sending
    + call progress (INFO_IND)
    + RX/TX gains
    + call deflection on circuit busy

    ToDo
    + supplementary services
    CF,CCBS,CCNR,3PTY
    + charge info (AOC-D,E)
    + native capi channel bridging
    + fax support (hard/software)

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