[asterisk-users] Give "Busy" to the 3rd call on a BRI using chan_capi

Cosmin Prund cosmin at adicomsoft.ro
Thu Feb 1 09:11:25 MST 2007


Any ideas? It should be simple...

Cosmin Prund wrote:
> Hello everyone:
>
> using chan_capi 0.7 and asterisk 1.4
>
> Quick question:
> How can I detect the number of "voice" channels (B channels) in use at 
> a given time. I'd like to call "Busy" if two B channels are used on my 
> BRI to give the calling customer a Busy signal.
>
> Long question:
> On my single-line BRI (two channels) I'd like to give the 3rd 
> simultaneous incoming call an busy signal. I already tested and the 
> Busy function works very well (I've set up one of my MSN's to 
> immediately call Busy). I also tested and I'm 100% sure the 3rd call 
> makes it into the box while the other 2 channels are talking, so this 
> is not a Telco problem and it can be "fixed" locally. Doing this on my 
> side of the line (as opposed to having the Telco issue the Busy signal 
> on my behalf) has an number of benefits: (a) I don't need to talk to 
> the Telco (b) I *know* who called and I can call them back and (c) In 
> a distant future I might use the capi channel's ability to transfer 
> the call to a different POTS line since this doesn't use the B channel.
>
> Thanks,
> Cosmin Prund
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