Method and integrated routing device for controlling remote systems via short messages

An integrated routing device for sending/receiving short messages between an SMSC and a mobile communication device for the mobile communication device to control a remote system via the integrated routing device, the integrated routing device comprising:

• a receiving unit for receiving a control request short message sent from the mobile communication device from the SMSC and recording a receiving time and for continuously receiving a plurality of control command short messages sent from the mobile communication device after verification;
• an analyzing unit for analyzing verification information, a sending time and a first control duration contained in the control request short message and, when the control command short message has a valid verification code, extracting the control operation in the control command short message;
• a verifying unit for verification according to the verification information and, when the verification information is valid, generating a unique verification code according to the verification information and recording the verification code, for computing a delay time according to the receiving time and the sending time, for subtracting the delay time from the first control duration to generate a second control duration, determining whether the second control duration is greater than zero, and for determining whether a received control command short message contains the verification code;
• and
• a managing unit for generating a request granted short message containing the verification code when the verifying unit confirms that the second control duration is greater than zero, sending the request granted short message to the mobile communication device via the SMSC, and starting time, and for continuously receiving a plurality of control command short messages sent from the mobile communication device when the time has not reached the second control duration and executing a corresponding control operation after the analyzing unit analyzes each of the control command short messages.