[chan-capi-users] Sending Service Feature Fax/Speech to remote faxmachines

[Armin Schindler]

On Thu, 24 Apr 2008, Guido Hecken wrote:
> Hi list,
>
> first at all thanks to the developers of chan_capi for their great channel
> driver, making
> Asterisk speak ISDN.
>
> We are using chan_capi with bri cards from Gerdes (aka Primux ISDN).
> Our involved Asterisk versions differ from 1.2 to 1.4 and baisc features
> work as expected.
> Chan_capi is used in Versions 1.0 and above.
>
> Since we needed to integrate some analog faxmachines, we configured some
> Grandstream HT386/HT286 with the Fax Passthrough Option in the GS
> Configuration interface.
> While there is no problem in recieving facsimiles, sending them is only
> working with remote faxmachines
> having "Faxempfang auch bei Dienstmerkmal Sprache" (something like service
> feature speech ?) activated.
>
> Is there any option, we can use in the available capicommands to send this
> required service feature to the remote
> faxmachine, or is it Grandstream's job to do so?

This is not a special capicommand. You just need to set the 
transfercapability in Asterisk before Dial() to set the CIP value you want
to have.
   Set(CHANNEL(transfercapability)=3K1AUDIO)
should do it (I did not test it).

It seems that 'SPEECH' is the default in you setup, which is not correct for 
fax.

Armin