Summary "XOP Networks Inc, manufacturer of advanced Emergency Communications products installed its IP based crash phone system at a major airport in Mexico. The product connects Air Traffic Control personnel with the first responders instantaneously for supporting rescue and relief operations over airport’s dedicated Local Area Network. We have deployed a pair of XOP RFCSs in a highly available configuration. These RFCSs are in turn connected over redundant fiber-based LANs to dual homed IP based field phones and IP based Strobe Lights and Sirens. The RFCSs also support redundant SIP trunks to the PSTN so that crash phone calls can be received over the public network."