... action sound. 17, the user using the telephone or cell phone into the host, through the remote control keyboard remote ... 19, the password operation to ensure system security. 20, with tri-band GSM 900MHz, 1800MHz, 1900MHz wireless networks, wired telephone network from the ... for remote deployment, disarm and so on. 23, support GSM / CDMA mobile phones to send text messages to the host, remote-site ...