Initiating and bridging 2 outbound calls

Hi,

I want to use Asterisk to initiate from software 2 outbound calls and bridge them. I’ve successfully initiated call to an outbound phone which was bridged to and extension, but I’ve not been able to find out how to do this to two external phones, its sort of phone conference but where asterisk calls out. I would really appreciate help on this matter.

TIA

Arnar