Abstract: Telephone network interface apparatus including an enclosure providing a splice chamber for receiving a telephone network cable including a plurality of incoming telephone lines, and providing a terminal chamber having a plurality of telephone terminals mounted therein; a plurality of individual, replaceable subscriber line interface modules are mounted on the enclosure, each module includes an interface jack, a subscriber wiring bridge including a pair of subscriber terminals, an interface plug connected to the subscriber terminals for being removably received within the interface jack, and each module provides an internal space for receiving a telephone circuit, the interface jack is for being connected to one of the telephone terminals and thereby to one of the incoming telephone lines and the subscriber terminals are for being connected to a subscriber premises line, upon the interface plug being removed from the interface jack a demarcation point being provided between the one telephone line and the subs

Abstract: Telephone network interface apparatus for interconnecting incoming telephone company wiring to subscriber premises wiring including a base including a bottom and an outwardly extending wall circumscribing the bottom, the wall includes opposed first and second wall portions and the bottom and wall provide a compartment divided generally into opposed first and second compartment portions, the first compartment portion is adjacent the first wall portion and the second compartment portion is adjacent the second wall portion, the first compartment portion is for having first terminals mounted therein for connection to the telephone company wiring and the second compartment is for having second terminals mounted therein for connection to the subscriber premises wiring; a telephone company cover mounted pivotally to the second wall portion and for overlying the entire compartment, the telephone company cover includes opposed first and second portions, the first portion is solid and is for overlying and closing the f

Abstract: A system is disclosed for verifying the integrity of each one of a number of communication paths, illustratively telephone subscriber loops, that runs between a near end location, illustratively a telephone company central office, and a corresponding remote ("far end") location(s). This system utilizes circuitry, such as a line verification module, that is located at the far end of each path to impart a selected test signal specifically a selected one of a number of sub-audible frequencies, thereto. In one embodiment, the circuitry continously transmits a test signal over the path. The level of the test signal is automatically adjusted such that this signal remains at an approximately constant amplitude regardless of whether that path is in an on-hook or off-hook condition. Central office monitoring circuitry is connected to the near end of every path being verified.

Abstract: Telephone network interface apparatus including a plurality of subscriber terminals for being connected to a plurality of subscriber premises lines, a plurality of telephone terminals for being connected to a plurality of incoming telephone lines, a plurality of telephone plugs and jacks for interconnecting and providing demarcation points between the incoming telephone lines and the subscriber premises lines, and mounting means for mounting the telephone network interface apparatus to the same bracket to which a prior art terminal block has been previously mounted whereby the telephone network interface apparatus of the present invention may be substituted for the prior art terminal block and both terminate and interconnect the plurality of incoming telephone lines and subscriber premises lines previously terminated and interconnected by the prior art terminal block and provide the needed demarcation points between the incoming telephone line and the subscriber premises lines.

Abstract: Retrofit apparatus for being mounted on a telephone terminal block previously mounted at a subscriber's premises and for providing a demarcation point at the telephone terminal block between an incoming telephone line and a subscriber premises line previously connected through first terminal means provided on the telephone terminal block, including telephone jack means for being connected to the first terminal means; second terminal means for being connected to the subscriber premises line upon the subscriber premises line being disconnected from the incoming telephone line; and telephone plug means connected to the second terminal means and for being plugged into the telephone jack means to interconnect the incoming telephone line and the subscriber premises line and for being unplugged from the telephone jack means to provide the demarcation point and permit the plug of an operating telephone to be plugged into the telephone jack means to facilitate determination of whether a fault exists on the incoming te

Abstract: A network interface device and enclosure adapted to interconnect incoming telephone wiring to subscriber premises wiring. The device, according to one embodiment, comprises first electrical terminals adapted to be connected to the subscriber premises wiring, second electrical terminals adapted to be connected to the incoming telephone wiring, a removable module disposed between the first and second electrical terminals, the module having space for a telephone circuit and the module having electrical connections for connecting the module with the second terminal; a cable coupled to the first terminals, the cable including a plug at an end of the cable distant from the first terminals, and a jack located on the module adapted to receive the plug, the jack being electrically coupled to the electrical connections for connecting the module with the second terminal.

Abstract: A combination apparatus is shown for clamping ground conducting means and for mounting lightning protecting means including an electrically conductive ground bracket formed integrally or of one piece, a ground clamp provided on the ground bracket for clamping a ground wire, first mounting means provided on top of the ground bracket for mounting the lightning protector on top of the ground bracket and second mounting means for mounting the ground bracket to structure to be grounded such as, for example, a telephone network interface device.

Abstract: An adapter for establishing electrical connections such as telephone or data line connections includes a face plate sized to fit through a corresponding aperture in a wall panel and a back plate larger than the aperture to abut the rear of the wall panel. A bracket is received about the face plate from the front of the panel. The bracket includes upper and lower projections which are received in corresponding aligned slots on the face plate for mounting the adapter to the face plate.

Abstract: A system is disclosed for verifying the integrity of each one of a number of communication paths, illustratively telephone subscriber loops, that runs between a near end location, illustratively a telephone central office, and corresponding remote ("far end") location(s). This system utilizes circuitry, such as a line verification module, that is located at the far end of the path to detect one or more conditions thereat (e.g. loop current and loop voltage) that are indicative of normal operation of the path, e.g. proper on-hook and off-hook conditions. As long as the path is normally operating at the far end, this circuitry would then transmit a test signal, e.g. a selected one of a number of sub-audible frequencies, over the path to the near end. This test signal is chosen to be substantially transparent to normal communication (e.g. local telephone company signalling and transmission frequencies) occurring over that path.

Abstract: A modular jack assembly includes a bridging card having conductors for establishing the desired bridging connections. An insert carrying the connector wires of the jack is placed in the jack such that the wires are received in edge slots of the bridging card to provide the electrical connections to the conductors on the card.

Abstract: A telephone network interface enclosure adapted to interconnect incoming telephone wiring to subscriber premises wiring.

Abstract: Telephone network interface apparatus for interconnecting a plurality of incoming telephone lines to a plurality of subscriber premises lines and for providing demarcation points therebetween including a multi-line interface plug provided with a plurality of conductors interconnecting the multi-line interface plug with a plurality of subscriber terminals, a multi-line interface jack mounted on a base and provided with a movable member movable into a plurality of different positions, with the movable member in one of the positions and the multi-line interface plug inserted in the multi-line interface jack, all of the plurality of subscriber lines are interconnected with all the incoming telephone lines, and with the multi-line plug removed, a demarcation point provided between one of the subscriber premises lines and one of the incoming telephone lines facilitating a determination of where a fault exists with respect to the one line and with the movable member positioned in another of the positions, a second d

Abstract: Apparatus for disconnecting and reconnecting equipment to a telephone line in response to a signal sent over the telephone line. The apparatus includes a voltage threshold circuit, a voltage regulator circuit and a switching and timing circuit. The switching and timing circuit includes a first energy storage capacitor and a first discharge circuit. The switching and timing circuit further includes a second energy storage capacitor and a second discharge circuit and further includes a third energy storage capacitor and timing resistor. The first discharge circuit includes a first semiconductor switching device and a relay coil of a latching relay. The second discharge circuit includes a second semiconductor switching device and a second relay coil of the latching relay.

Abstract: Various embodiments of a ground start circuit suited for use in telecommunication applications, illustratively in conjunction with a ground start line, and a method for use in the circuit for invoking ground start operation on such a line are described. In essence, as soon as a telephone line is connected across the inventive ground start circuit, a potential difference that appears between a ring side of a two-wire telephone line and earth ground causes a control voltage internal to the circuit to increase in magnitude. Once this control voltage reaches a threshold value, then the circuit establishes a low impedance path between the ring side of the line and earth ground in order to place the line in an unbalanced condition. This low impedance path is maintained until a central office connected to the line at a remote end thereof senses the unbalanced condition and, in response, applies battery voltage to the line to cause loop current to flow therethrough, i.e.

Abstract: Method and apparatus for selecting a single telephone line from among multiple line pairs at a location remote from the central office and isolating that line from the respective subscriber line to allow the performance of line tests on same. Line pairs are sampled sequentially for a short time interval to determine whether a signal is present within an initial detection band, that band having a range about .+-.100 hz of the test signal frequency. If a signal is found, the system shifts to a validation made to defect a signal within a range of about .+-.10 hz of the test signal frequency during a preselected long time interval. Upon finding a signal present at the end of the validation cycle, the system disconnects the selected line from its respective subscriber line and begins performing line tests to diagnose problems.

Abstract: A holder for retaining telephone related circuitry enables telephone circuitry designed for various specific mounting configurations to be mounted to a connecting block. The holder includes a housing having an opening for receiving the circuit. Ear projections and a flexible hook-shaped projection are integrally molded in the interior portion of the housing for removably retaining the circuitry. The housing also has fanning strip guides integrally molded in its exterior portion for insertion between fanning strips on the connecting block. A first tab and a flexible second tab project off of and are integrally molded to the housing so that the housing can snap on to the connecting block.

Abstract: An apparatus and method for decoding ringing signals on a party telephone line coupled to the telephone line and a telephone instrument, according to the polarity of a d.c. voltage level present across the telephone line upon which ringing signals are superimposed and according to the grounded state of the telephone line. The apparatus comprises a discrimination circuit which supplies a selected one of the ringing signals to the telephone instrument via a ringing signal path to actuate the ringer of the telephone instrument. The apparatus further comprises a ringing signal rectification circuit connected to the telephone instrument via a voice signal path for preventing the ringing signal present on the telephone line from activating a ringer of the telephone instrument via the voice signal path. A switching circuit selectively connects the telephone instrument to the ringing signal path and the voice signal path.