[asterisk-users] Options for bridging channels in a smart bridge

Joshua Colp jcolp at digium.com
Wed Jul 5 11:51:50 CDT 2017

On Wed, Jul 5, 2017, at 01:45 PM, Jean Aunis wrote:
> Hello,
> I am struggling with a problem which I thought would be an easy one : 
> bridging several channels together in a *smart* bridge. I emphasize 
> *smart* : I want my bridge to be a native_rtp one when only two channels 
> are involved, and switch to softmix technology when a third channel 
> comes in.
> I thought I could use ConfBridge for that, but it creates a bridge that 
> is not smart (it is of type softmix even if two channels only are
> involved).
> I can do this with ARI of course, but handling transfers will become 
> quite difficult : I will receive replace_channels events, and channel 
> optimization will not be performed. I managed to have something working 
> this way, but I had to write a lot of code and some situations are very 
> tricky to debug.
> The easiest way I found was to write a piece if dialplan mixing 
> BridgeWait, Bridge and BridgeAdd. This works well, transfers are handled 
> by the Asterisk core, and the bridge is smart. Still, it requires to 
> maintain a list of bridged channels in order to call BridgeWait, Bridge 
> and BridgeAdd in the right order and with the right parameters.
> Can you think of any other way (hopefully easier) to achieve this ?

Not really, there's no cookie cutter application that behaves as you
need using the bridging API.

Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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