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| Number | Title | Issue Date |
| 5414694 | Address tracking over repeater based networks A system is provided for use in a network to provide authentication of packets of data, provide security to ensure the prevention of unauthorized receipt of data, to provide improved monitoring of the packets of data transmitted and received over such a n... | 05/09/1995 |
| 5315590 | Selectable repeater port reconnection method and apparatus An apparatus and method for providing a selectable novel reconnection algorithm for a repeater partition state machine to use in reconnecting a partitioned port. The reconnection algorithm permits selection of one of a first or a second partitioning/recon... | 05/24/1994 |
| 5283781 | Apparatus for receiving and modifying a serial data packet from a communications network to indicate its status A series of remote input/output repeater modules connected on a synchronous serial communication network supervised by a programmable logic controller uses a synchronous serial communications protocol. The programmable logic controller contains a transmit... | 02/01/1994 |
| 5162936 | Apparatus for monitoring the operation of an optical repeater Apparatus for monitoring a plurality of optical repeaters of an optical communication system in which each said repeater directly amplifies an optical signal transmitted in an optical fiber and passing through the respective optical repeater, including an... | 11/10/1992 |
| 5038364 | Transmission line monitoring system A transmission line monitoring system for monitoring the quality of a transmission line along which a plurality of repeaters are equipped. A monitoring line is equipped along the transmission line for transmitting a signal for collecting information on th... | 08/06/1991 |
| 4980887 | Digital communication apparatus and method A T1 digital carrier system having a transmitter, receiver and a plurality of intermediate repeater stages. Each remote repeater has a select switch for automatically selecting that the remote repeater be placed in loop-back mode should a combination of f... | 12/25/1990 |
| 4941198 | Communications repeater monitoring system A monitoring and alarm system for a radio frequency microwave communications repeater unit. A plurality of signals representative of the status of a corresponding plurality of operating conditions of the repeater unit are simultaneously generated. The sig... | 07/10/1990 |
| 4937812 | Subsidiary station capable of automatically adjusting an internal delay in response to a number signal received in a downward signal by the subsidiary station A repeater station receives from a preceding station a first downward signal of a frame period, with a propagation delay. The repeater transmits a second downward signal to a succeeding station, which second signal is a delayed repeat of the first downwar... | 06/26/1990 |
| 4926413 | Satellite communication subsystem with the capability of performing a non-interferring operational test The frequency of the broadcasting waves transmitted from the ground broadcasting station and received by an antenna is converted to that of the satellite broadcasting wave by means of a receiving section. The satellite broadcasting wave is transmitted to ... | 05/15/1990 |
| 4882765 | Data transmission system Data is transmitted from a mobile or a base station to a booster or repeater station which, if it identifies that the same message has been retransmitted a preset number of times by the mobile or base station it automatically retransmits the data. The num... | 11/21/1989 |
| 4815101 | Step-by-step remote locating system for repeaters in a pcm link A step-by-step locating system for a digital bidirectional transmission link includes repeater pairs between a monitoring end equipment and a remote monitored end equipment. When a repeater pair is connected via a loop-back path to the monitoring end equi... | 03/21/1989 |
| 4768202 | Signalling method and device for bidirectional digital transmission link A method of transmitting signalling along a bidirectional digital transmission link consists in transmitting from an intermediate equipment of the link a signalling message in two parts. One is a characterizing part the form of which depends on the signal... | 08/30/1988 |
| 4710976 | Optical repeater monitoring system An optical repeater for an optical digital transmission line has a pair of in-service monitoring circuits (55, 55') each of which includes a flip-flop (57) for dividing frequency of transmission data to derive commands and burst carrier in the first line ... | 12/01/1987 |
| 4623998 | Communication network having gain adjustment function of a transmission amplifier of medium attachment unit In a communication network in which a plurality of information processors are coupled to a communication medium through medium attachment units (MAUs), a pilot signal generator sends a pilot signal of a reference level to a predetermined point of the comm... | 11/18/1986 |
| 4611324 | Method of controlling a supervisory arrangement in a digital transmission system A supervisory arrangement for a digital transmission system in which a plurality of repeaters are arranged between two terminal stations, a terminal station transmitting a call message which is provided with an address number towards the desired repeater.... | 09/09/1986 |
| 4550403 | Method for transmitting a HDBn code signal with an auxiliary binary signal in a digital transmission line and system for monitoring repeaters in the line by means of auxiliary signals A signal in HDBn code is transmitted with an auxiliary binary signal having a lower bit-rate on a digital transmission line. The HDBn code signal comprises predetermined sequences each including n+1 elements, n-1 central elements being zeros and a last el... | 10/29/1985 |
| 4402075 | Step-by-step remote locating system for repeaters in a PCM link A step-by-step remote locating system for a digital bidirectional transmission link includes repeater pairs between a monitoring end equipment and a remote equipment. The monitoring equipment transmits remote location sequences and a locate end interrupti... | 08/30/1983 |
| 4354054 | Caboose signal controlled reporting arrangement for a regenerator chain A status reporting arrangement for a digital transmission system (10) has a plurality of stations (11, 12, 13) in a tandem configuration. Each station (such as 11) includes a reporting circuit (30) arranged for receiving (36) a train of messages (91, 96),... | 10/12/1982 |
