we are building the pilot network with CER and CUCM 7.0 and voice gateway. voice gateway is not connected to PSTN. when I dial 911 from any phone, onsite security phone ring as if someone dials directly to his phone. is it normal behavior? I expect call goes through the gateway not directly to the onsite security phone. then after 911 call is finish, then onside security phone rings. but it seems it is not case.