Harris Corporation

Yazaki Corporation

Fluke Corporation

Roy Lujan Soto

Edward J Zoiss

Linda L Hathorn

Anand Ganesan Kaygee

Sivashankar Yoganathan

Michael David Dipperstein

Michael F Kennedy

Paul H Katz

Joseph E Gleason

Alan Blair Lowell

Travis Lee Berrier

Joseph E Barron

Kurt Foulger

Wayne Kwok-Wai Wong

Cory Yi

David W Keefe

Jeffrey W Hearsey

Dennis Ackmann

Kenneth Sterling

Fernando Antonio Montijo

Aaron Ross London

Robert J Homkes

Wiley J Ehrke

Disclosed is a technique for managing access by a portable device to an in-vehicle router system (IVRS). The IVRS determines network access privilege of the portable device located within the vehicle. The portable device determines whether it is connected to a wireless access point (AP) of the IVRS or a rogue network. The portable device transmits a first token to the wireless AP, via a first communication link implementing a first protocol stack, to prompt the wireless AP to reply with a second token. The portable device receives the second token via a second communication link implementing a second protocol stack different than the first protocol stack between the portable device and the IVRS. The portable device determines whether the second token matches the first token. If the second token is determined to match the first token, the portable device authenticates the wireless AP.

Method for controlling access to an in-vehicle wireless network

Disclosed is a technique for managing communications of portable devices within a vehicle through an in-vehicle router system. The in-vehicle router system includes a plurality of out-of-band interfaces used to determine a user type associated with a portable device used to manage a connection with a wireless access point. The out-of-band interface receives a query from a portable device via a first communication link. The query includes identifying information of the portable device and a request for network credentials to a second communication link with a wireless access point. A user type is determined based on a location of the out-of-band interface and a unique identifier. Network credentials associated with the determined user type are retrieved. The network credentials are provided to the portable device via the first communication link. Access to the second communication link is restricted based on the user type and/or vehicle status information.

Limiting distraction from in-vehicle portable devices

Disclosed is a technique for managing communications of portable devices within a vehicle through an in-vehicle router system. The in-vehicle router system includes a plurality of out-of-band interfaces used to determine a user class associated with a portable device used to manage a connection with a wireless access point. The out-of-band interface receives a query from a portable device via a first communication link. The query includes identifying information of the portable device and a request for network credentials to a second communication link with a wireless access point. A user type is determined based on a location of the out-of-band interface and a unique identifier. Network credentials associated with the determined user type are retrieved. The network credentials are provided to the portable device via the first communication link. Access to the second communication link is restricted based on the user type and/or vehicle status information.

A diode-configured power supply interface circuit prevents inadvertent miswiring of power supply leads to wrong polarity voltages of either primary or auxiliary DC supply voltages from triggering the operation of a circuit protection device installed in the power supply path of a telecommunication circuit. It also indicates whether the device's power terminals are properly connected to a power source, so that if inadvertently reversed, the wires can be properly reconnected, and thereby provide for delivery of power from either power source, as required.

Dual power polarity protector/indicator

A frequency domain reflectometry-based bridged tap detection system for a telecommunication wireline employs a prescribed filtering operator, such as a 'best-fit' curve filter or a piecewise high pass filter bank, upstream of a Fourier processing operator, to improve the signal-to-noise ratio of the digitized amplitude array of the swept frequency band. To fit the response tones within the dynamic range of the analog-to-digital converter that digitizes the response tones detected from the wireline, a signal conditioning circuit, comprised of a comb filter bank, envelope detector and compander, is installed between the test head and the input to the analog-to-digital converter.

Detection of bridge taps by frequency domain reflectometry-based signal processing with precursor signal conditioning

A method and system is disclosed for testing an IDSL communications line. Transmission elements are queried sequentially within an IDSL communications line. A predetermined period of time is waited after querying a transmission element for a correct response. If a correct response is received, the next transmission element is queried for its existence. Configuration of the IDSL communications line is identified based on the received responses.

System and method of testing an IDSL communications line

An integrated services digital network (ISDN) test set includes an ISDN transceiver, a supervisory control processor which is operative to cause the ISDN transceiver to controllably transmit and receive ISDN communication messages over a communication circuit, and an alpha-numeric message display through which messages associated with the operation of the ISDN test set are displayed. The test set keypad also includes a dedicated 'ASSIST' key, that is selectably operated by the user, to cause the control processor to execute a user assistance routine, which accesses a contextual-based alpha-numeric database, whose contents are associated with and provide additional information of a displayed alpha-numeric message. This enables a test set user, regardless of training or experience, to be provided with information necessary to competently operate the test set and successfully test an ISDN line.

Interactive contextual-based assistance for portable ISDN test set

A portable ISDN test set contains test circuitry that is controllably operative to automatically test the ISDN communication capability of an ISDN circuit. In response to a user operating a prescribed input/output element of a user interface of the test set, the test set's supervisory control processor executes a routine that places an ISDN call over a first bearer channel of the ISDN circuit, the first bearer channel having a first directory number, through a public switched telephone network to a second directory number associated with a second bearer channel of the ISDN circuit. The ISDN call is thus routed by the public switched telephone network back to the ISDN test set. When the ISDN call is received by the test set, it is automatically looped to the public switched telephone network, so that the call is rerouted to the first directory number associated with the first bearer channel to the ISDN test set. When the looped back call is answered, a BERT is conducted over the dual looped bearer channel pair, thereby testing the full 128 Kbps bearer channel bandwidth of the ISDN circuit. The automated testing routine includes a subroutine that automatically derives the first and second directory numbers from respective user-supplied service profile identifiers for the first and second bearer channels.

Call yourself BERT testing of ISDN line

A device and method for testing a telephone circuit in which a caller takes advantage of available caller identification information to complete a ringback test without resort to potentially costly and overused toll trunks. The ringback test device is accessed by a caller (subscriber or craftsperson) who may not be aware of the telephone number from which he is calling when the caller completes a call to a telephone number assigned to the device. As the caller is accessing the test device, the test device detects the caller identification available between the first and second rings to identify the caller's telephone number, and answers the call after the second ring. The test device presents the telephone number to the caller, and the test device may thereafter be used to complete a ringback test to the identified telephone number. The caller ID information may also be display-formatted at the test device and provided to a caller's visual display.

Telephone ringback test device and method

A test set interface automatically determines the type of communication link to which it is coupled, and then configures internal test circuitry to support testing of that particular type of line, irrespective of which of a plurality of different types of communication signals the line may be conveying. The interface includes a multiconductor line cord, end connections of which are configured for connection with any of multiple types of telecommunication circuits. A telecommunication circuit analysis is coupled to the line cord and to test circuitry, and is operative to analyze electrical characteristics of a respective telecommunication circuit to which the line cord is selectively connected by a test set microcontroller, so as to determine which of the different types of communication signals is being conveyed by the telecommunication circuit. In response to this determination, the test set configures its test circuitry to test the operation of the telecommunication circuit in accordance with the type of communication signal detected.

Test set interface for automatically detecting line type

A variable geometry battery compartment of an electronic communication device, such as a telephone test set, is readily reconfigurable by the user, so that different sized batteries can be used to power the circuitry of the device. For this purpose, a moveable battery contact wall is repositionable between spaced apart locations relative to a fixed battery contact wall. A charging switch controls the establishment of a charging path for rechargeable batteries, and can only be engaged when the moveable wall is positioned to accommodate longer sized rechargeable batteries. Changing the position of the moveable battery contact wall to accommodate shorter, non-rechargeable batteries, will prevent the charging switch from being engaged by an activating boss in a cover of the device, so that shorter non-rechargeable batteries cannot be placed in circuit with a battery charger.

Variable geometry battery compartment for accommodating different sized

ISDN test set

A strain relief attachment for attaching a telephone communication cord to a telephone test set has a line cord strain relief element, a grooved neck end of which is insertable through a tunnel through an end of the test set to a strain relief engagement cavity adjacent to a battery compartment of the test set and accessible by a battery door. The strain relief element includes a bore through which the line cord extends and a flange configured to conform with an external surface of the test set adjacent to the tunnel. The strain relief element engagement cavity is connected by a line cord passageway to the battery compartment. A wedge-shaped line cord retention plug is inserted into the strain relief engagement cavity, engaging the grooved neck of the line cord strain relief element and a wall surface of the strain relief engagement cavity. As the wedge-shaped line cord retention plug is inserted into the cavity, it draws the line cord strain relief element into the test set, urging the flange of the line cord strain relief element into sealing engagement with the external surface of the test set.

Growing community of inventors

Moorpark, CA, United States of America

Roy Lujan Soto