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 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).

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.

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.

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.