Connect ConfBridge-s on two asterisk instances


I have two Asterisk servers running.
Both have a confbridge.
I would like to join two confbridges from the two systems into one confbridge.

I tried:

exten => 1001,1,Answer()
exten => 1001,2,ConfBridge(1101)
exten => 1001,3,Hangup()

exten => 1011,1,Answer()
exten => 1011,2,Originate(IAX2/6001,exten,users,1001,2)
exten => 1011,3,ConfBridge(1101)
exten => 1011,4,Hangup()

This works fine until that 6001-extension drops the connection; no auto-reconnect is performed.
Is this the way to go? If yes: how can I do the auto-reconnect?

Use ConfbridgeLeave AMI event to monitor if 6001 leave the conference and if so add it again using Originate command