[asterisk-users] bridging isdn calls to free up channels

[Paul Hales]

Option 7a - use a VOIP provider, and tie up no lines.

PaulH


On Mon, 2006-12-18 at 11:35 +1100, James Harper wrote:
> I was incorrect in a previous email... The situation in question is
> this:
> 
> Asterisk <---BRI---> PBX <---BRI---> PSTN
> 
> There are Samsung extensions on the PBX and SIP extensions on Asterisk.
> I want to be able to use TAPI to initiate dialling, and the PBX has no
> such feature so Asterisk must initiate it.
> 
> For an Asterisk initiated call from a PBX extension to a PSTN number,
> this works as follows:
> 1. TAPI (eg Outlook) sends the instruction to Asterisk
> 2. Asterisk calls the extension.
> 3. The extension answers
> 4. Asterisk dials the PSTN number
> 5. Asterisk joins the ends together
> 
> This works great except it ties up two BRI channels between asterisk and
> the PBX for the duration of the call. Is there a trick I can do to tell
> the PBX to join the channels together internally? A transfer or
> something?
> 
> I'm using mISDN at the moment, but I guess I could use CAPI if the
> required features were missing from mISDN...
> 
> Thanks
> 
> James
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