A service provider uses a telemetry gateway to communicate with radio communication devices using various incompatible short message service (SMS) protocols. A communication, from the service provider to a radio communication device, passes through the telemetry gateway. The telemetry gateway determines...http://www.google.com.hk/patents/US20080004057?utm_source=gb-gplus-share專利 US20080004057 - Telemetry gateway
