A voice over internet protocol unit comprising: a VoIP control module for VoIP operations among VoIP units that is configured to selectively establish peer-to-peer communication between the VoIP unit and another one of the VoIP units, and multicast paging among a plurality of the units; a WiFi antenna configured for operation in a hazardous area in compliance with the one or more hazardous area standards; a WiFi interface module connected to the VoIP control module and the WiFi antenna and configured to exchange bi-directional Ethernet data between the antenna and the VoIP control module; and an enclosure configured to comply with one or more hazardous area standards and enclose the VoIP control module and the WiFi interface module; wherein the antenna is mounted on the exterior of the enclosure through an opening therein and is configured to provide a flame path that retains the compliance of the enclosure with the one or more hazardous area standards when the antenna is deployed in the opening; wherein the antenna provides the flame path using at least one of a pressure fitting of the antenna within the opening via threads along the inner circumference of the opening that cooperate with threads on the exterior section of the antenna installed within the opening; and/or an electrical connector on an end of the antenna that extends through the opening and into the interior of the enclosure for connection to the WiFi interface module. a VoIP control module for VoIP operations among VoIP units that is configured to selectively establish peer-to-peer communication between the VoIP unit and another one of the VoIP units, and multicast paging among a plurality of the units; a WiFi antenna configured for operation in a hazardous area in compliance with the one or more hazardous area standards; a WiFi interface module connected to the VoIP control module and the WiFi antenna and configured to exchange bi-directional Ethernet data between the antenna and the VoIP control module; and an enclosure configured to comply with one or more hazardous area standards and enclose the VoIP control module and the WiFi interface module; wherein the antenna is mounted on the exterior of the enclosure through an opening therein and is configured to provide a flame path that retains the compliance of the enclosure with the one or more hazardous area standards when the antenna is deployed in the opening; wherein the antenna provides the flame path using at least one of a pressure fitting of the antenna within the opening via threads along the inner circumference of the opening that cooperate with threads on the exterior section of the antenna installed within the opening; and/or an electrical connector on an end of the antenna that extends through the opening and into the interior of the enclosure for connection to the WiFi interface module. a pressure fitting of the antenna within the opening via threads along the inner circumference of the opening that cooperate with threads on the exterior section of the antenna installed within the opening; and/or an electrical connector on an end of the antenna that extends through the opening and into the interior of the enclosure for connection to the WiFi interface module.