I have a customer wanting to interface their overhead paging with their new CUCM 6.1 IPT system. They have the overhead paging split into four zones and I have a 4 port FXO card setup with one analog line to service each zone. The customer wants to be able to call each zone individually via a different number which is easy enough but they also want another number which if called would trigger the paging over all 4 zones at the same time. I believe this is called "Call Blast" but I don't think its supported on CUCM? Any ideas on the best alternative option to set this up?