Abstract: A method of controlling a USB hub by a microcontroller, comprising the steps of sending a suspend request to the microcontroller from the USB hub; sending a stop clock request from the microcontroller to the USB hub in response to the suspend request; and stopping the USB hub controller clock in response to the suspend request; entry into a powersave mode by the microcontroller in response to the suspend request.

Abstract: A Telephone Answering Device (TAD) has a message transfer system for notifying the owner that a message has been recorded on the TAD and permitting the owner to hear the message by having the TAD automatically dial a preprogrammed telephone number of a telephone at a second location. The TAD would play back a prerecorded audio message to the person picking up the telephone at the second location advising the person that a message has been recorded on the TAD. The TAD calls the preprogrammed telephone a number of times until the telephone at the second location is answered. If the telephone at the second location is not answered after the predetermined number of tries, the attempt to send the transfer message is discontinued.

Abstract: A telephone answering machine with a built in telephone that incorporates a mechanism for retrieving messages under a variety of operating conditions has the ability to access messages through the telephone handset to ensure privacy, while not interfering with normal telephone usage. The messages can also be played back through the speaker of the unit.

Abstract: A telephone answering device (TAD) detects termination signals (Calling Party Control or CPC signals) on a telephone line by determining which signal is most probably a CPC signal, then comparing suspect signals to the determined signal. A series of memory registers store the value of an initial series of suspected CPC signals when the TAD is initially powered up. The stored values are compared with each other to confirm and validate the CPC signal. Upon finding a sufficiently repeated value, that value is stored and from there on used as the value for the CPC signal. Future signals received that are the same as the determined CPC signal terminate TAD operation.

Abstract: A telephone answering machine with a built in telephone that incorporates a mechanism for retrieving messages under a variety of operating conditions has the ability to access messages through the telephone handset to ensure privacy, while not interfering with normal telephone usage. The messages can also be played back through the speaker of the unit.