fax passthrough with BRI Cards [under construction]

8.3. fax passthrough with BRI Cards [under construction]

The utility program capifax, which is part of the capi4linux package, contains a bug: it uses the ISDN service designation "SPEECH" for transmitting fax data. In fact, "SPEECH" shall only be used for audio transmissions (eg. ordinary phone calls). The correct ISDN service designators for fax transmission are "FAX23" and "AUDIO31KHZ".

in hylafax, there is an option to accept speech anyway. in capi.conf change the option AcceptSpeech to 1.

Warning, if you are using chan_misdn, then preemptive kernel has to be disabled. (otherwise when you start asterisk, asterisk will hang up after loading chan_misdn). Possible also SMP support has to be disabled.

references:

hylafax with misdn
capifax error

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Dirk Gommolla (Dirk dot Gommolla at gmx dot de)
03 February 2006 18:43:38
Hi, you are wron reg. the ISDN-Service-designation:

SPEECH is for faxing the right designator. AUDIO3.1kHz should never work with a well configured destination-PBX.

Speech means services from POTS-Networks, which can contain Voice or Fax. So FAXG3 and Audio is able to connect to a SPEECH-Service.

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