An electrical protector device (10) for grounding excessive voltage and excessive current to safeguard telecommunications circuits includes a heat coil assembly (100) for sensing and directing excessive current to ground, and a spark gap arrester (200), axially aligned with the heat coil assembly (100), for sensing and controlling excessive voltage. Whenever an overcurrent condition is encountered, heat coil mechanism (110) is displaced to provide metallic contact of the incoming line to a groun...

The present invention relates to a wire connector for the incoming and outgoing wires of a telecommunications cable, in which the connector body (3) comprises a cover portion (1) and a bottom portion (2). For the termination of two wires (4) there is fixedly mounted a solderless, non-screwed, strip-free terminal (5) having a polytropic air gap, a resilient tab (7) having a crimped portion (6) being integrally formed at one end of said terminal (5) and the contact arms (5a) of said terminal (5) b...

A multipair telephone cable (50) has been specifically developed for voice frequency and T1 carrier frequency transmission between cities. The copper wire gauge, dielectric diameter, and insulation expansion are uniquely designed so that this single cable design can be used for either air core or waterproof versions of the cable. Advantageously, both cable versions are compatible with existing carrier and voice frequency electronics. Also, the load coil spacing for voice frequency transmission a...

A modular communications access apparatus which permits untrained personnel to quickly and properly convert a passive junction box which contains a telecommunications cable to an active junction box with a wall-mounted telecommunications socket, includes a first keyed socket connected to selected conductors of the in-wall telecommunications cable and an associated attachment structure. The attachment structure, designed to be connected by the untrained personnel, includes an active face plate ha...

In a telecommunications network short dialling codes for a subscriber terminal are programmed by another party, and the allocation of codes is communicated to the user. An audio announcement played as part of the dial tone may be used to communication the allocation of codes.

The invention relates to a telecommunications installation (1) for transmitting video and/or audio signals. The telecommunications installation can be connected to at least one telecommunications terminal (3) provided with an image display device, especially a conventional videophone (3). According to the invention, a video signal generator (10) is provided which generates a video signal in a data format and data protocol that correspond to the telecommunications terminal (3). The video signal g...

The invention relates to telecommunications equipment including a service unit. According to the invention, the service unit includes a driver core and modules connected to the driver core and adapted to process signaling, and the driver core: receives signaling messages from one or more signaling networks, and sends the signaling messages to the modules in accordance with a predetermined rule.

The invention comprises a telecommunications signaling processor that processes Signaling System #7 (SS7) telecommunications signaling messages to select Asynchronous Transfer Mode (ATM) virtual connections and provide control messages indicating the selected ATM virtual connections.

In a TDM communications system comprising a base station and a number of outstations, a marshalling signal enables a newly connected outstation to determine the timing of its transmission bursts A detector circuit for recovering the marshalling signal incorporates comparators whose thresholds are adjusted to the high and low levels of the normal data signal. The marshalling signal is recovered from one or other of the comparators according to whether a high or low normal data signal is received,...

A telecommunications device is provided that enables monitoring of the directivity of a wireless communications system that wirelessly transmits signals using multiple communications antennas while controlling the overall directivity of the multiple antennas. At least one monitor antenna, installed separately from multiple communications antennas controlled to achieve a prescribed overall directivity, wirelessly receives signals from the multiple communications antennas. A directivity informatio...