Abstract: A remote monitoring device is integrated as part of a cell phone or personal digital assistant. By sharing computing resources of a communications transceiver, the cost of a monitoring device can be significantly reduced, while still permitting sufficient functionality to effectively observe an area of interest, such as a child's sleeping area. An alert is generated and transmitted to an observer using a separate transceiver when activity at the monitored area (i.e., sound or video activity) meets a specified threshold.

Abstract: A drop test apparatus for a mobile terminal comprises: a fixed frame supported vertically by a supporting surface; a holder for holding a mobile terminal; a motor for lifting the holder to a first height; an absorber for cushioning the fall of the holder; and a collision surface installed a first distance away from the fixed frame so that impulsive wave created from contact made between the holder and the absorber as a result of dropping the holder is not transmitted to the collision surface.

Abstract: A method and a system for monitoring telephone calls are described. A useful signal (which represents the call information of a telephone call) and a data set (which contains at least one digital subscriber tag) are supplied to a recording center (20). The data set is supplied to a relaying device (28), in which it is compared with stored comparison data sets. If the subscriber tag matches a corresponding comparison tag of a selected comparison data set, a communications link is produced to a monitoring device (36).

Abstract: Disclosed is a method for building a home-zone database using data measured while moving about the home-zone service area in a mobile communication system, which includes a mobile diagnostic monitor with a GPS antenna, a mobile telephone and a base station database.

Abstract: Apparatus for assessing the performance of telecommunications systems by comparison of a reference signal with the same signal as degraded by the system under test tends to give unreliable results when used to test connectionless packet-switching equipment. This is because variable delay in delivery of the individual packets can result in the test signal and reference signal becoming unsynchronised. This may lead to the apparatus recording a poorer performance than a human tester would have recorded. To overcome this problem, the invention separates the test signal into a series of individual sections, which are synchgronised and analysed separately, and a quality value, aggregated over all the sections, is derived.

Abstract: Techniques for predicting RF signal propagation in indoor environments are disclosed. A typical technique comprises six distinct phases. In one phase, the mean wall separation, {overscore (d)}, of one floor of a building is estimated. In a second phase, a reflection coefficient, s, is estimated for the floor in general. In a third phase, a number of trial RF propagation measurements are made to gather empirical data about the RF propagation characteristics of the floor.

Abstract: Methods and apparatus for performance testing of an analog cordless telephone are addressed herein. A telephone base station is connected to a test controller which directs the base station to initiate a test. The test controller signals the telephone handset to transmit a plurality of test packets to the base station, each test packet being similar to an opcode used in signaling between the handset and the base station. For each test packet received, the base station passes a signal to the test controller. The test controller computes an error rate based on a difference between the number or packets received and the number of packets expected and computes communication performance between the handset and the base station based on the error rate.