39 results about "Main distribution frame" patented technology

A method and system for automating cross-connects for a telecommunication system comprising a network of communication lines for connecting subscriber locations to a central office exchange 112. The communication lines extend to the subscriber locations from a main distribution frame (MDF) (320) in which a plurality of standard termination blocks are housed in the MDF for terminating the lines from to the subscriber side and lines from the exchange side, which are cross-connected in the prior art with jumper wires. In an embodiment of the invention, the cross-connects are mounted on modular cross-connect boards having mechanical switching means that are inserted into or connected to the termination blocks. Automation is achieved by selectively controlling the connection state of the cross-connects via a computer terminal (350,352) located remotely from the MDF. The system is scalable to the growth in subscriber lines within the MDF by installing additional cross-connect boards. A further embodiment includes automation of street cabinets (328) and drop point sites (330) containing cross-connect boards of the present invention.

A detecting method of outside line power frequency invading for the main distributing frame has the features as the transducer being a current transformer with Bomo alloy core and its induction coil exporting DC signal via the process of bridge rectifier and RC filtering circuit, the signal to be sent into microprocessor chip via the amplifying of the operation amplifier, comparator and integrator formed by the operation amplifier as well as A / D converting, the chip to calculate out the integrate quantity of square and time of the current through software and to use it as basis for judgement, to export the alarm signal when the integrate quantity is bigger than the setting quentity and the alarm signal being exported by alarm control unit which is driven by power amplifier.

The embodiment of the invention relates to a main distribution frame and a method for implementing the same. The method for implementing the main distribution frame comprises the following steps: separating a composite signal transmitted by a user into a narrow-band signal and a broadband signal; and respectively carrying out circuit switching on the separated narrow-band signal and the broadband signal by adopting a narrow-band switching matrix module and a broadband switching matrix module. In the method, by separating the composite signal on a subscriber line into the narrow-band signal and the broadband signal, circuit switching is respectively performed on the narrow-band signal and the broadband signal by adopting the narrow-band switching matrix module and the broadband switching matrix module so as to provide different switching implementation modes by aiming at the different signals.

A cross-connect switch (16) for implementing local number portability between a current local service provider originating switch (14) and a desired local service provider ported switch (18). The cross-connect switch (16) is connected in a line associated with a subscriber's directory number between the originating switch (14) and a main distribution frame (12) to establish a first active communication channel. The cross-connect switch (16) is also connected in-line between the ported switch (18) and the main distribution frame (12) to establish a second inactive communication channel. The cross-connect switch (16) is signaled to automatically deactivate the first communication channel and activate the second communication channel thereby routing communications associated with said subscriber's directory number to the ported switch (18).

PURPOSE: An ADSL splitter apparatus and a distributing method are provided to reduce an expense of a high-priced interlayer cable distribution expense and a pipework expense by adopting a separate splitter and splitter terminal board. CONSTITUTION: A DSLAM(Digital Subscriber Line Access Multiplexer,1) is an ADSL transmission equipment installed in a transmission chamber, and a main distribution frame 2 is installed at a testing chamber. As an ADSL signal(voice signal + data signal) is connected from a line number side terminal(3) to a jumper wire and to a terminal block(16) of an ADSL splitter terminal board(15), and passes through a separate splitter(17) positioned at a lower portion of the ADSL splitter terminal board(15), the voice signal and the data signal are separated into two contact points. At this time, the data signal is transmitted to a cable between ADSL transmission self(13) in the DSLAM(1) and the voice is transmitted to an office cable(4) at the side of an exchange connected to a mechanic side terminal board(5). A splitter base(29) of the ADSL splitter terminal board(15) may be constructed by the unit of 128 lines or 64 lines, as many as the receiving line number of the mechanic terminal board(5) which is currently used and fabricated with the same size to be mounted. A plurality of line guide holes are formed at an upper and lower side of a mounting unit(30) of the splitter base(29) mounted in the main distribution frame(2) in order to prevent confusion with respect to the line number in connecting a jumper / cable among the line number side terminal board(3), mechanic side terminal board(5) and a DSLAM transmission self(13). A plurality of modulized IDC type terminal blocks(16) are coupled at an upper portion thereof. An insertion hole is formed at a lower portion of the terminal block(16), into which a separate splitter(17) is inserted.

The present invention discloses a remote access Communication system, which includes an automated main distribution frame, a remote access device and a device management system. Under control of the device management system, the automated main distribution frame and the remote access device implement auto port-correspondence between a user and the remote access device, therefore accomplishing automatic switch function. The present invention also provides a control method utilizing the above system, in which after receiving a configuration command and verifying the command, the main distribution frame configures a switch module, therefore accomplishing an automatic switch system. The present invention reduces operation costs effectively and improves speed of service fulfillment.

The invention discloses a media control method and system in an IMS (IP multimedia subsystem), and the method comprises: an MCF (multicore framework) or a media control parsing entity set in the IMS receives an SIP message used for controlling the media service and sent by a user terminal concerning to requested media service, and maps the SIP message to a corresponding RTSP (real time streaming protocol) command or parses out the RTSP command from the SIP message according to a mapping relation between the SIP message and the RTSP command; then, the RTSP command obtained through mapping and parsing is sent to an MDF (main distribution frame), wherein the SIP message received by the media control parsing entity is sent to the media control parsing entity after the MCF receives the SIP message sent by the user terminal; and the MDF controls the media service requested by the user terminal according to the received RTSP command. According to the invention, media interactive control between the user terminal and a network side on the premise of not damaging completeness of the RTSP protocol can be supported.

The invention discloses a main distribution frame for a fiber. In the frame, a straight module and a transverse module of the distribution frame are arranged on the front side and the rear side of the frame respectively, and are connected through jumpers which have independent jumper channels and have the function of cross connection; the distribution frame abandons the defect that the conventional fiber distribution frame jumps through a cable channel to improve the flexibility of jumper management. The product greatly improves the capacity of the fiber distribution frame to save expensive computer room area, has certain originality, and can reduce the communication investment cost of operators; an equipment lateral cable is introduced into the transverse module, not only can be arranged into a terminal directly in the transverse module, but also can be melted with a tail fiber in the transverse module to form the terminal under the condition that the length of the equipment lateral cable cannot be controlled accurately.

The invention provides a method and device for guiding optical fiber jumper connection construction. The method comprises the steps that a three-dimensional perspective drawing model and a corresponding plane spreading animation of an optical fiber main distribution frame are displayed; the starting point clicking operation and the terminal point clicking operation of a user are received; a fiber jumping route conforming to the fiber jumping construction rule is worked out according to the coordinates of the starting point and the terminal point and types and coordinates of all components in the optical fiber main distribution frame, wherein the optical fiber needed by the fiber jumping route is the shortest, and the fiber jumping route comprises the coordinates and the length of the shortest optical fiber; the fiber jumping route is added to the three-dimensional perspective drawing model and the corresponding plane spreading animation according to the coordinates of the shortest optical fiber; the three-dimensional perspective drawing model and the corresponding plane spreading animation into which the fiber jumping route is added, and the length of the shortest optical fiber are displayed. According to the method and device for guiding optical fiber jumper connection construction, the optical fiber jumper connection construction is visually guided, the balance of the utilization ratio of all fiber walking grooves and fiber winding columns in the construction process is guaranteed, and the fiber walking grooves can be prevented from being blocked.

A method and system for automating a switch matrix board for cross-connecting any line in a set of input lines to any line in a set of output line, to be used e.g. in automating cross-connects for line pairs in a central office main distribution frame (MDF) of a telecommunication network. The switch matrix (100) comprises a plurality of contact sledges (130) driven by a plurality of sledge positioning screws (120) that slidably engage a plurality of main contact pads (110) to cross-connect the lines. In an embodiment of the invention, two electric motors cooperate to position a lateral drive gear (158) to engage and rotate a selected sledge positioning screw (120), which moves the contact sledge. In another embodiment, a single electric motor operates together with a magnetic clutch assembly (180) to position the lateral drive gear to rotate the sledge positioning screw (120). A controller unit is connected to a position detection system and to the motor's to accurately position the contact sledge (130) on the switch matrix board.

The invention relates to a large-capacity optical fiber main distribution frame with various exchangeable optical fiber interfaces. A front supporting frame and a rear supporting frame are arranged at the front portion and the rear portion in a box body, and a plurality of horizontal wiring grooves are arranged on the front supporting frame. An adaptor base plate comprising a 96-core terminal panel, a fiber splitting groove and a fiber splitting support is arranged in space formed by each wiring groove and the front supporting frame, wherein the panel can turn over vertically, and a small wire winding wheel and a wire ring are arranged on the front supporting frame corresponding to the position of the adaptor base plate. A plurality of large wire winding wheel and optical cable through holes are arranged on the rear supporting frame, an optical cable splitting device is arranged at the upper end of the rear supporting frame, and a plurality of adaptor installation units are arranged below the optical cable splitting device. Each adaptor installation unit is provided with a middle supporting strip and a covering plate capable of turning over vertically, and sixty adaptor installation holes are arranged in the adaptor installation unit. The large-capacity optical fiber main distribution frame is provided with various exchangeable optical fiber interfaces, seven 96-core terminal panels can be arranged, wires are arranged and wounded at the back of the box body, and a large number of redundant jumper wires can be stored.

A method and system for automating a switch matrix board for cross-connecting any line in a set of input lines to any line in a set of output lines, to be used e.g. in automating cross-connects for line pairs in a central office main distribution frame (MDF) of a telecommunication network. The switch matrix (100) comprises a plurality of contact sledges (130) driven by a plurality of sledge positioning screws (120) that slidably engage a plurality of main contact pads (110) to cross-connect the lines. In an embodiment of the invention, two electric motors cooperate to position a lateral drive gear (158) to engage and rotate a selected sledge positioning screw (120), which moves the contact sledge. In another embodiment, a single electric motor operates together with a magnetic clutch assembly (180) to position the lateral drive gear to rotate the sledge positioning screw (120). A controller unit is connected to a position detection system and to the motors to accurately position the contact sledge (130) on the switch matrix board.

The invention relates to an online test unit for an optical main distribution frame (OMDF) on account of centralized optical measurement, which is characterized in that an optical terminal unit of a built-in wavelength division multiplexing (WDM) assembly is additionally inserted into an optical distribution frame (ODF) or the OMDF; an optical cable between optical line terminal (OLT) equipment and an optical distribution network (ODN) is arranged and connected to the optical terminal unit; the patch cord of the OLT on the original ODF / OMDF is removed; the patch cord of the OLT and the patch cord of a centralized optical measurement system are connected to an optical terminal combiner unit; and the test unit is designed into a vertical 6-core plug board or a horizontal 12-core plug board according to different OMDF stands. The online test unit for the OMDF on account of the centralized optical measurement has the advantages that a module with an optical online monitoring function is realized on the ODF / OMDF; through installing a combiner assembly in the optical terminal unit of the ODF / OMDF, an online monitoring function of a passive optical network (PON) can also be provided without interrupting services, thereby, the space of a machine room is reduced to the maximum degree and the consumption of an optical material is saved, and simultaneously, the maintenance management and operation requirements of the ODF / OMDF of a telecommunication machine room are also met.

The invention discloses an online bidirectional testing unit of an optical main distribution frame based on concentrated light measurement. The online bidirectional testing unit comprises two WDM (Wavelength Division Multiplexing) devices and a filter; the filter is connected in series between testing ports of the two wavelength division multiplexing devices; the testing ports of the two WDM devices are further used for inputting testing light; external wire ports of the WDM devices are used for connecting an external wire port of an optical fiber terminal unit of an optical distribution frame or the optical main distribution frame; and internal wire ports of the WDM devices are used for connecting an internal wire port of the optical fiber terminal unit of the optical distribution frame or the optical main distribution frame. The online bidirectional testing unit provided by the invention is arranged inside the terminal unit of the ODF (Optical Distribution Frame) / OMDF (Optical Main Distribution Frame), so that a function of monitoring a PON (Passive Optical Network) online can be provided, and the rate of occupying a motor room space and the consumption of saving an optical fiber material can be reduced to the greatest extent. Meanwhile, the requirements of ODF / OMDF maintenance management of the telecom motor space and operation habits can be met.

The invention relates to an optical fiber main distribution frame comprising a frame body. The front surface of the frame body is the line side, the back surface is the equipment side, and the left and right sides of the frame body are the jump fiber storage areas. The front surface of the frame body comprises multiple optical cable stripping devices and multiple fusion and distribution integratedmodules which are alternately arranged from the bottom to the top. The back surface of the frame body comprises multiple terminal panels and multiple horizontal wiring slots. The terminal panels andthe horizontal wiring slots are alternately arranged from the bottom to the top. The left and right sides of the frame body are the jump fiber storage areas. The jump fiber storage components of the jump fiber storage areas are provided with bobbins. Each set of jump fiber storage component is provided with multiple bobbins so as to form column bobbins. The "W"-shaped wiring mode is used, the fiber outgoing length of the fiber storage areas is controlled by adjusting the shape of "W" and the whole fiber arrangement is orderly without mutual interference. Multiple stripping plates are applied to partition the line side fusion welding area, each optical cable only requires to be stripped for more than 1m for penetration of the plastic circular tube and the phenomenon of fiber breakage is reduced so that the working efficiency can be enhanced.

The invention discloses a communication joint grounding system. The communication joint grounding system comprises wireless equipment, a main distribution frame, transmission equipment, switching equipment and power equipment, wherein the wireless equipment and the main distribution frame are connected with a vertical grounding main collecting line through horizontal grounding sub-collecting lines; the vertical grounding main collecting line is connected with a grounding body through a grounding lead; the transmission equipment, the switching equipment and the power equipment are connected with the vertical grounding main collecting line; the horizontal grounding sub-collecting lines are connected with construction steel bars; an antenna is arranged on the wireless equipment. The communication joint grounding system adopts a joint grounding mode, technically enables all grounding systems in the whole building to be jointed to form a voltage balancing net with a low grounding resistance value, and has the advantages that (1) the ground potential is balanced, and the potentials of all ground wire systems in the same layer are substantially equal, and the potential difference endangering the equipment is eliminated; (2) a common ground bus establishes a reference zero-potential point globally; (3) the interference of the ground wire systems is eliminated; (4) the electromagnetic compatibility performance gets better.

A method and device for setting up a virtual electronic teaching system with individual interactive communication is proposed. Various methods and devices for carrying out tele-teaching or e-learning sessions have been previously suggested. These methods and devices are improved in such a manner that work stations that can be freely interlinked and individual interactive communication can be set up at low cost. Towards this end, a telecommunication network is used that comprises a main distribution frame linked with an exchange (VST). An access multiplexer and / or a splitter are connected to the main distribution frame or are integrated into the main distribution frame. analog or digital telecommunication systems (TE) are connected via an interface circuit (SS). When the connection is set up, at the transmitter end, the kind of connection available to the interface circuit (SS) is determined. A stored test information is transmitted to the remote station and a receipt, received from the remote station in the return direction, is evaluated, wherein the bandwidth available on the telecommunication system (TE) is tested. The system is particularly useful in the field of electronic teaching.

The invention discloses a fiber main distribution frame with functions of integrated butt fusion and distribution, optical branching and online test. The fiber main distribution frame comprises a support; the support is provided with a front space and a rear space; the front space is provided with a plurality of in-line modules which are arranged from top to bottom along the support, and the rearspace is provided with a plurality of horizontal-line modules which are arranged from top to bottom along the support; and the output end of each horizontal-line module is provided with two ports, one port is connected to a photoelectric conversion device which is connected to a user, and the other port can be connected with a test device. The fiber main distribution frame disclosed by the invention not only has the inline modules which can be used for carrying out butt fusion and distribution of fibers, but also has the horizontal-line modules which have the functions of optical branching and online test, therefore, the fiber main distribution frame not only has various functions, but also has standard and neat wiring arrangement and is easy to construct and manage.

A method and system is disclosed for automatically scanning for and detecting existing jumper wires or metallic cross-connects within a central office main distribution frame (MDF), street cabinet, and drop point sites. In an embodiment of the invention, the method includes connecting a plurality of modular sender and receiver units to the MDF connector blocks. Scanning signals are sent between the lines on the subscriber side and the exchange side that are received by the receivers to accurately determine which subscriber lines are cross-connected to which lines on the exchange side. In a second embodiment, the scanning system is operable in cooperation with an automated cross-connect system installed within the MDF or drop point site. The automated cross-connect system comprises modular switch matrix arrangements that enable cross-connects to be established or removed remotely from the central office. The scanning procedure establishes an accurate line connection database that enables non-intrusive installation of the automated cross-connect system by preserving previous cross-connects. Furthermore, the combined operation with the automated cross-connect system enables cable line repairs to be completed with short order by allowing repair crews to connect the broken lines without regard to order such that the original connection sequences that can be restored by automatically modifying the cross-connects in the central office or in the drop point site.

The invention discloses an optical fiber main distribution frame and belongs to the technical field of optical fiber distribution. The optical fiber main distribution frame comprises a frame body. Modules are disposed on the frame body. A support plate is disposed at the lower end of the frame body. A fixing seat is disposed at the lower end of the support plate. A rotating mechanism is disposed in the fixing seat. An insertion opening is formed in each module. A through hole is formed above each insertion opening. Light guide bars penetrate the through holes. A liquid crystal block is disposed between the front light guide bar and the rear light guide bar. A bulb is disposed at the rear end of each module. The radian of the tail end of the rear light guide bar is consistent with each bulb. Compared with the prior art, the optical fiber main distribution frame has the advantages that the main distribution frame can be moved or the angles of the main distribution frame can be adjusted according to actual needs, the light of the turned-on bulbs irradiates the rear light guide bar, the rear light guide bar is brightened, a user can conveniently determine a connection state, and the optical fiber main distribution frame is simple in structure, convenient and practical.

The application discloses an optical fiber distribution frame, which belongs to the technical field of communication. The optical fiber distribution frame includes a fusion-matched integrated unit box 1 and a tray 2, wherein: the fusion-matched integrated unit box 1 is installed on the tray 2; the tray 2 is provided with a structure for fixing with the mold strip bracket on the cabinet . The present application can solve the technical problem in the related art that the main distribution frame using the integral mold bar support cannot meet the scene where the optical copper is mixed.

In order to provide unbalanced ringing when an exchange line card provides a balanced ringing output the interface provides a ringing detector in circuit with a customer pair. On detecting balanced ringing signals from the line card, the interface takes over the customer line pair and provides unbalanced ringing signals to the customer and monitors for customer answer. By inserting the interface in circuit at the main distribution frame of an exchange, legacy customer premises equipment which is unable to respond to balanced signalling can be provided with an appropriate ringing signal without the necessity to provide differing line cards at the exchange.

A detecting method of outside line power frequency invading for the main distributing frame has the features as the transducer being a current transformer with Bomo alloy core and its induction coil exporting DC signal via the process of bridge rectifier and RC filtering circuit, the signal to be sent into microprocessor chip via the amplifying of the operation amplifier, comparator and integrator formed by the operation amplifier as well as A / D converting, the chip to calculate out the integrate quantity of square and time of the current through software and to use it as basis for judgement, to export the alarm signal when the integrate quantity is bigger than the setting quentity and the alarm signal being exported by alarm control unit which is driven by power amplifier.

The invention discloses a concentrated alarm signal uploading device and method of a main distribution frame, relating to the technical field of communication. The device comprises an alarm signal sampling circuit, a sampling signal triggering circuit and an alarm uploading access circuit, wherein the alarm signal sampling circuit is electrically connected with the main distribution frame and is used for carrying out sampling on alarm signals of the main distribution frame and obtaining sampling signals; the sampling signal triggering circuit is used for receiving the sampling signals from the alarm signal sampling circuit and triggering alarm uploading signals according to the sampling signals; and the alarm uploading access circuit is used for receiving the alarm uploading signals from the sampling signal triggering circuit and accessing the alarm uploading signals into a shared network platform. The alarm signal uploading device is simple in circuit, convenient in implementation and easy in modification and popularization of a communication agency station; and according to the uploading method, a concentrated monitoring system network platform of the existing communication agency station is utilized for implementing uploading of remote alarm signals, the network platform sharing is carried out on the originally-constructed concentrated alarm system, the system performance is stable and reliable and the reconstruction and the investment are avoided.

The invention discloses a main distribution frame line bank, a safety unit and a main distribution frame, wherein the main distribution frame line bank comprises at least one port, and the main distribution frame line bank comprises at least one port. At least one port is provided with an anti-crosstalk device. The anti-crosstalk device comprises a first protective metal unit arranged on one sideof the port and a second protective metal unit arranged on the other side of the port, wherein the first metal protection wire is electrically connected with the first protection metal unit and the second protection metal unit, or is electrically connected with the first protection metal unit and the second protection metal unit through the safety unit when the safety unit is inserted. According to the scheme provided by the embodiment of the invention, the equipotential body is provided for shielding crosstalk, and crosstalk of the port to other ports is carried out.