Abstract: Connected to a telephone switching system through subscriber lines, a subscriber call simulator acts as a plurality of pseudo-subscriber's telephone sets. An input/output section inputs control procedure information for the pseudo-subscriber's telephone sets. Connected to the input/output section, a memorizing arrangement memorizes the control procedure information as stored information. By using the stored information, a control circuit controls the pseudo-subscriber's telephone sets. The control procedure information comprises a control procedure program and correspondence information stored in a procedure program memory and a correspondence information memory, respectively, both of which act as the memorizing arrangement.

Abstract: A method and system for producing a toll ticketing record for a call with a mobile subscriber moving within the cells of at least two exchanges and generating a toll ticketing record of the call which includes sections which are related to the intersystem legs of the call.

Abstract: The present invention interrupts the service after the entire preparation process, and executes testing process after interconnecting the line to the test equipment, and recovers the line as service possible as soon as the test is ended. As a result, the minimum amount of service time is killed by the test. On the test by line maintenance personnel, the present invention reports the personnel about the status of the line by an instant test just after doing hook-on following the ring sent from the exchanger in a specified time. So, the line maintenance personnel can verify the status of the line at instantaneously.

Abstract: The present invention relates to a method for distinguishing between an open conductor and a proper termination of a telephone subscriber loop which is terminated with a telephone which does not conform to the ringer-equivalence standard of the FCC Rules. In this invention a telephone subscriber loop can be tested for an open or for a termination by a customer provided equipment telephone by obtaining a first ratio of the tip-to-ground impedance relative to the tip-to-ring impedance; and a second ratio of the ring-to-ground impedance relative to the tip-to-ring impedance, and comparing each of these ratios relative to a fixed ratio value. If the measured ratios are substantially equal to or greater than the fixed ratio value, the subscriber loop is terminated with a customer provided equipment telephone. The fixed value may be dependent upon the length of the loop and whether or not a maintenance termination unit is present in the loop.

Abstract: A digitizer stylus with Z-axis side pressure control, comprising a nib front end resiliently mounted on the stylus housing and cooperating with a Hall-effect transducer such that side pressure on the nib, used like a calligraphic pen or brush, modifies the Hall-effect output, which can be used to modify an additional parameter, such as line width, of a drawing.

Abstract: A telephone line monitoring apparatus which is used to continuously monitor the telephone line and provide both a visual signal and an auditory signal if the line becomes inoperative. The circuit is designed to be plugged into a conventional telephone jack and monitor the line voltage so that if the line voltage falls below about 6 volts DC or if the line is short circuited or becomes disconnected, the telephone line monitoring apparatus will cause a light emitting diode to flash on and off and further will cause an auditory sounder to emit an audible signal. The light emitting diode is a self-flashing type which serves to modulate the auditory signal.

Abstract: A timer for automatically controlling the cumulative service time of a telephone consisting of a box mounted over and plugged into a standard wall telephone outlet. The box contains an exterior receptacle for connection with the telephone cord. The interior of the box is secured by a locked cover that prevents access to the controls as well as to the mounting screws that fasten the unit to the outlet box. The desired total amount of time of phone use permitted during each 24 hour period is selected by setting appropriate control switches and it remains unchanged until a new selection is made. At the expiration of the selected cumulative service time, the timer alerts the user of the impending disconnection by a tone signal and automatically disconnects the phone soon thereafter. The device is powered by a battery backed utility 110 VAC source and it resets itself automatically every 24 hours, so that no periodic adjustments or calibrations are required.

Abstract: A method and apparatus is provided within an interface to data terminal equipment for obtaining call progress information. The call progress information provides relevant data as to the progress of a call initiated by the data terminal equipment. The interface is designed to be used in a portion of the telephone network that lacks byte alignment. Such portions of the telephone network do not currently receive call progress tones. The interface is preferably a data service unit that includes a receiving means processor and a display means. The data service unit interprets signals sent from the DDA/OCU that encode the presence or absence of call progress tones sent from the destination node of an initiated call.

Abstract: There are disclosed a method of call control (gapping) and a communications switching system in which such method is implemented, the system incorporating a call gapping arrangement for limiting the recurrence rate of successive call attempts for a particular type of call, for example to a national phone-in number, the arrangement comprising a clock (10) for determining a succession of call gapping intervals; a first up/down counter (18) having a limit N; a signal generator (11) responsive to the clock and coupled to the counter (18) to increment it by a value m each interval; a second up/down counter (21) having a limit M less than N, the counters (18, 21) being responsive to call processing circuitry (14) to be decremented for each call attempt effected by the system: a comparator (15) responsive to the content of counter (21) becoming zero to inhibit the call processing circuitry (14) from allowing call attempts.

Abstract: An input/output apparatus includes a coordinate input device and a display device which are stacked on each other. The coordinate input device detects position coordinates of an input designating device by (a) intermittently transmitting radio waves from a tablet to excite a tuned circuit incorporated in the input designating device and (b) receiving radio waves generated by the tuned circuit while transmission of radio waves by the tablet is suspended. The times while the display data latch pulses are generated in the display device is synchronized with the transmission of radio waves from the tablet in the coordinate input device. In consequence, noise is not generated in synchronism with the generation of the display data latch pulses while the tablet receives the radio waves, so noise is not imposed on a signal received by the tablet.

Abstract: A telephone line monitoring circuitry apparatus which is used to continuously monitor the telephone line and causes a light emitting diode to flash on and off and further causes an auditory sounder to sound loud and soft to provide both a visual signal and an auitory signal if the telephone line becomes inoperative. The light emitting diode is a self-flashing type which serves to modulate the auditory sounder. The monitoring circuitry and apparatus is energized by a DC battery, or by an AC power source with DC battery back-up. The monitoring circuitry and apparatus is designed to have acceptable input impedance and ringer-equivalence and complete isolation to prevent interference with the telephone network.

Abstract: The present invention is directed toward deterring modification of a telephone unit by drilling by inserting a drill guard in the drilling path or axis such that the drill guard defines a surface portion in the drill path or axis at a deflection angle sufficient to prevent drilling due to deflection of the drill.

Abstract: A multipurpose keyboard incorporating an electronic pressure sensing device, a digitizer pad featuring spatial minimization of a pressure contact area capable of locating the leading and trailing edges of the pressure contact area is described. A processor coupled to the electronic pressure sensing device is programmed to sense when various regions on a simple, fully interchangeable template overlay and the underlying electronic pressure sensing device are depressed. The sensed region is associated by the processor with a particular key identification on the template overlay. The variation of the resistance in the digitizer pad enables the processor to detect the actuation of more than one key on the template overlay at the same time, thereby defecting key rollover. A method of fabrication for a multipurpose keyboard is also described.

Abstract: A method and system is disclosed for interfacing Individual Calling Line Identification (ICLID) information in a telephone system with a computer at a subscriber telephone location. The data component of the received multiplexed ringing signal is extracted and stored in the internal memory of the computer. The ICLID data can be instantly displayed on the computer monitor or processed by the computer to generate related information which may be displayed on the computer monitor. The ICLID number can be transferred to the keyboard buffer to actuate a program to generate a disk lookup and populate fields on the monitor screen whereby the phone call is used drive the application by the ICLID data.

Abstract: A coin slot cover for telephones to indicate an out-of-order condition. A plate with a pair of locking tabs extending therefrom that may be inserted into the coin slot of a pay telephone.

Abstract: Disclosed is a means for testing drop wires in digital loop systems which employ optical fiber up to a distant terminal near the subscriber's premises. A test module is provided at the distant terminal to determine the presence or absence of faults on the wires to the customer premises. The results of the test are transmitted via an optical data link to the remote terminal where the results can be accessed by a loop tester at the central office.

Abstract: Disclosed herein are position determining apparatus and conductor structures or grids therefor. The conductor structure for each axis includes a number of conductors, at least one of which is run in a serpentine path with a non-uniform repeat increment. The repeat increment, which is the spacing between one run and the next of the same serpentine conductor, is constrained by a maximum repeat increment, or a minimum repeat increment, or a maximum change in repeat increments between consecutive runs of a same conductor, or combinations thereof. In the preferred embodiments, there is at least a constraint on the maximum repeat increment to provide noise immunity. The conductors are arranged for each axis of the grid in a pattern such that signals obtained for that axis may be processed to provide binary members in a Gray-type code each unique to a small region of the active area in which the coil center is located.

Abstract: A modem use monitor (MUM) is disclosed which is utilizable with one or more groups of modems for analyzing modem defects of the individual modems. Typically, a rotary hunt arrangement of telephone lines for data communications is sequentially served by several modems. For analytical purposes, an intercept device is provided to receive a data carrier detect signal from each modem. The intercept device has been enhanced to receive a plurality of signals and to facilitate defect analysis. Exemplary of the processed signals is the summing of the ring indicator (RI) signal and the data carrier detect (DCD) by means of a logical OR to provide a single test signal which can be examined for a ring-no-answer condition.

Abstract: A telecommunications system 10 is provided which comprises a PBX system 12 coupled to a call processing system 16 through plurality of trunks 14. SMDR data records are received from the PBX system 12 by the call processing system 16 through an SMDR data line 18. The call processing system 16 includes an SMDR translation system which retrieves call records associated with each call placed through the call processing system 16 and matches these call records to SMDR data records received from the PBX system 12. The matched records are used to generate a combined SMDR output record for a particular call which is then output through an output line 30 to a call accounting system 32. In this manner, the call processing system 16 can utilize the information received from the PBX system 12 with the accurate call duration information generated in its own systems to provide for accurate call records associated with each call placed through the call processing system 16.

Abstract: A position detecting device includes a tablet which has a magnetic sheet and two conductor sheets. The magnetic sheet is formed by weaving a group of warp elements (or weft elements) having multiple insulating fibers and a plurality of relatively long magnetic elements disposed among the fibers at predetermined regular spacings and a group of weft elements (or warp elements) having multiple insulating fibers into a plain weave fabric, which is hardened into a sheet-like configuration. Each of the conductor sheets has a plurality of linear conductor elements extending substantially parallel to each other. The two conductor sheets are respectively overlaid on the upper and lower sides of the magnetic sheet so that the conductor elements and the magnetic elements extend orthogonally with respect to each other. The corresponding conductor elements of the upper and lower conductor sheets are connected to from alternate exciting and detecting lines.