Hi everybody,

I run Asterisk for at least one week and a problem appears;

I have put a AVM passive card into Asterisk Box and I install it without problem using CAPI (chan_capi of course)

Asterisk is configurated to wait 20 sec before answering the incoming ISDN line to allow others users to answer the line before with a DECT system. If somebody not reach to answer, Asterisk takes the call, plays the IVR and try to call VoIP Phones and if is there nobody, Voicemail IVR and Hangup.

Until here no problems.

Now if the ISDN line is busy (the same MSN) (if there is already a established communication) and another one try to call throught ISDN line, Asterisk wait the 20 sec. but, that's logical, no tone is played and the correspondant heard nothing until Asterisk answers de line.

Possible Solutions:
- Play a sound  like tone.

Impossible, Asterisk must answer the call and this way destroy the capability to answer the line with DECT Handsets.

- Check CAPI specs.

CLI allow to check the state of the line, so I think it's possible to create an AGI program to check if the line is busy and do something in function.

- Plug the DECT base into a X100P Digium Card.

Is there a way to call specific handset instead of all?


Thank you in advance for all solutions you can share with me



Kind regards,


Ignace



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