Abstract: A superconducting oxide thin film device is composed of a LaAlO.sub.3 substrate and a YBCO thin film with a BaCeO.sub.3 buffer layer disposed between the two. The adhesion between the film and the substrate is increased by the presence of the buffer layer. The buffer layer also inhibits peeling of the film from the substrate and diffusion of Ba from the film into the substrate.

Abstract: A mobile paging telephone call back device determines and adds the appropriate prefix to a received call back number. The call back device includes a pager, a control unit, an automatic dialer, and a cellular telephone. The pager receives a page message from a paging system central controller. The control unit extracts a dialable telephone number from the page message, determines the appropriate prefix to be added to the telephone number, and adds the prefix to the telephone number. Using the telephone number with the added prefix, the automatic dialer completes a call back for the cellular telephone.

Abstract: To ensure that a user of radio paging services receives page messages while traveling, page messages are broadcast over both the user's local paging channel and a nationwide paging channel during periods of scheduled travel. At all other times, page messages are broadcast over the user's local channel and accompanied by tone-only messages of abbreviated length broadcast over the nationwide channel. Receipt of a tone-only message provides user notification that he or she was paged over the local channel. Receiving logic in the pager carried by the user automatically switches the pager between local and nationwide channel frequencies under the control of channel marker codes transmitted over the local channel and a switching code included in tone-only messages received over the nationwide channel. To facilitate system management, all page messages are routed through a nationwide paging terminal.

Abstract: A ground-to-air telephone calling system is provided including a computer for receiving an airborne telephone number and a call-back number from a calling party and forming the telephone numbers into a data signal comporting with existing protocol filed in the FCC, an uplink unit for uplinking the data signal to a satellite and a plurality of downlink stations for receiving the data signal from the satellite; a plurality of ground stations corresponding to each of the downlink units for receiving the data signals and passing a call signal identifying the airborne telephone and particular ground station to a corresponding transmit/receive unit for subsequent transmission to the aircraft; a call being initiated from the ground station to the calling party over the public switched telephone network if the aircraft responds to the call signal.

Abstract: A system for establishing a communication link between a caller and a mobile communication device that includes a mobile telephone and a paging device capable of receiving information transmitted from a paging network. In addition to the mobile communication device, the system includes a telephone network, a first mobile switching center, a conference bridge, a paging network, and a second mobile switching center. The first mobile switching center receives a telephone call transmitted over the telephone network using an identification number of the mobile telephone. If the mobile communication device is not located in the area covered by the mobile switching center, the mobile switching center forwards the received telephone call to a conference bridge using a bridge number assigned to the mobile communication device. The conference bridge receives the forwarded telephone call and transmits an identification number of the paging device in the mobile communication device to the paging network.

Abstract: A ground-to-air telephone calling system is provided including a computer for receiving an airborne telephone number and a call-back number from a calling party and forming the telephone numbers into a data signal comporting with existing protocol filed in the FCC, an uplink unit for uplinking the data signal to a satellite and a plurality of downlink stations for receiving the data signal from the satellite; a plurality of ground stations corresponding to each of the downlink units for receiving the data signals and passing a call signal identifying the airborne telephone and particular ground station to a corresponding transmit/receive unit for subsequent transmission to the aircraft; a call being initiated from the ground station to the calling party over the public switched telephone network if the aircraft responds to the call signal.

Abstract: A system and method for encoding and decoding page messages includes an encoder for encoding and classifying each word of the page message. Words found in one of one or more word dictionaries are encoded into corresponding compressed codes. A header code identifying either the dictionary or the classification of the word is associated with each word. The encoded message is transmitted to a page receiver where each word is decoded based upon the header code associated therewith. If the header code indicates that the word is a compressed code stored in a word dictionary, the compressed code is used to retrieve the word from the dictionary. If the header code indicates that the word is not stored in a word dictionary, the words are decoded differently, depending upon their classification.

Abstract: A ground-to-air telephone calling system is provided including a computer for receiving an airborne telephone number and a call-back number from a calling party and forming the telephone numbers into a data signal comporting with existing protocol filed in the FCC, an uplink unit for uplinking the data signal to a satellite and a plurality of downlink stations for receiving the data signal from the satellite; a plurality of ground stations corresponding to each of the downlink units for receiving the data signals and passing a call signal identifying the airborne telephone and particular ground station to a corresponding transmit/receive unit for subsequent transmission to the aircraft; a call being initiated from the ground station to the calling party over the public switched telephone network if the aircraft responds to the call signal.

Abstract: A paging system includes a digital switch, an interface processor, and a central computer. The interface processor voice prompts a caller to input a desired function code and in response, performs the desired function or instructs the digital switch to route the call to a different portion of the paging system which may include a voice mailbox unit for recording voice messages. The digital switch, in response to an instruction from the interface processor, can establish a telephone connection to an outside number for a caller already connected to the paging system.

Abstract: A mobile paging call back system is provided includes a control unit interconnecting a radio pager, a memory, an indicator, a control switch, and an automatic dialer, with the control unit including a logic circuit programmed: (i) to provide verification that valid data representing a telephone number has been received from a radio pager, (ii) to store that data in the memory after verification, (iii) to activate the indicator, after the verification, to provide a system user observable signal indicating that valid data has been received, and (iv) to either transfer the stored data from the memory to the automatic dialer means for use therein to dial a mobile radio telephone or to erase that data from the memory in response to system operator activation of the control switch. Preferably, the system of the subject invention is mounted on the dashboard of a mobile vehicle. A related method is also disclosed.