Using Confbridge instead of Page (asterisk 1.6.2.0)

Hello…

Is it possible to modify this extensions.conf entry:

exten => 0/12,1,Page(Local/21@page&Local/31@page&Local/41@page&Local/51@page|d)

to use ConfBridge instead of Page? I can’t see how it can be implemented the asterisk CLI command help being the only resource I have…

Thanks