Interworking interface module for telecommunication switching systems

• US 6,927,336 B2
• Filed: 03/29/2002
• Issued: 08/09/2005
• Est. Priority Date: 03/29/2002
• Status: Expired due to Fees

• Current Assignee: Hsun-Chien Huang
• Original Assignee: Hsun-Chien Huang
• Inventors: Huang, Hsun-Chien
• Primary Examiner(s): Reichard, Dean A.
• Assistant Examiner(s): Harris, Anton B.
• Application Number:
  US10/108,336
• Publication Number:
  US 20030185387A1
• Time in Patent Office: 1,229 Days
• Field of Search: 174/52.1, 174/50, 174/50.52, 174/50.54, 174/53, 174/54, 174/55, 174/59, 174/60, 174/65.R, 361/727, 361/728, 361/730, 361/752, 361/796, 361/600, 361/803, 361/827, 220/3.2, 220/3.8, 220/241, 220/242
• US Class Current: 174/541
• CPC Class Codes: H04M 19/00 Current supply arrangements for telephone systems for selecting-equipment H04Q1/28

Abstract

An interworking interface module for telecommunication switching systems has multiple interworking terminal I/O ports, tracking terminal I/O ports, and system terminal I/O ports, and an indicator lamp are mounted on the external panels of a mounting frame. Multiple connection modules are attached onto the inner surface of a mounting frame used for setting up interconnection between the above terminal I/O ports. Each connection module comprises a switching means, such that a terminal separated from the system connection is automatically switched to connect to a terminal resistor to damp any line oscillation due to open connection. Using the connection modules to interconnect the above terminals of the invention, the present invention is able to reduce the necessary interconnecting components and simplify the procedures for assembling a transit exchange platform, while the original service quality with respect to a line connection is maintained.

Claims

1. A modular interworking interface module for telecommunication switching systems, which comprises:

a mounting frame, with an indicator lamp mounted on a top portion of a front panel;

a monitor terminal port, a pair of interworking terminal I/O ports and a pair of tracking terminal I/O ports arranged in tandem below the indicator lamp; and

a pair of system terminal I/O ports mounted on a back panel;

wherein the interworking terminal, tracking terminal and system terminal each has a pair of corresponding I/O ports;

an output connection module with a conductive metal coating or metal plating on the internal surface, and multiple half-round notches for placing tubular pipes containing conductive wires, which allow for system connection and automatic exchange of line connection between a pair of output ports from the system terminal to either the tracking terminal or interworking terminal;

an input connection module with a conductive coating or metal plating on the internal surface, and multiple half-round notches for placing tubular pipes containing conductive wires, which allow for system connection and automatic exchange of line connection between a pair of input ports from the system terminal to either the interworking terminal or tracking terminal.

2. A modular interworking interface module for telecommunication switching systems as claimed in claim 1, wherein the external configuration comprises a lamp socket with an indicator lamp, a pair of I/O ports for the interworking terminal, a pair of I/O ports for the system terminal, a pair of I/O ports for the tracking terminal, and a monitor terminal port;

wherein;

the lamp socket formed near a top of the front panel with an appropriate width is for insertion of a tracking indicator lamp adapted from a photo diode;

a through hole formed in between the I/O ports of the interworking terminal for insertion of a set screw used is for affixing the input or output connection module on to the internal surface of the front panel; and

a screw cap is fitted on-to the through hole opening to cover the set screw;

two half-round notches fixed on the lower portion of the front panel are for holding a pair of I/O ports;

a first hold bracket with two matching half-round notches is used to fit against the opposing surface of the above fixed notches for holding the pair of I/O ports on the front panel;

two half-round notches fixed on the back panel of the mounting frame are for holding a pair of I/O ports;

a second hold bracket with two matching half-round notches is used to fit against the opposing surface of the above fixed notches for holding the pair of I/O ports on the back panel;

the input ports and output ports of the tracking and system terminal are placed respectively in the corresponding notches before clamping the first and second hold brackets to hold the input ports and output ports in place.

3. A modular interworking interface module for telecommunication switching systems as claimed in claim 2, wherein a spacer is formed on an upper perimeter attaching to an inner surface of the mounting frame;

and a circuit board is installed on a back side of the spacer;

two lugs are formed on one end of the spacer for setting the respective conductive coils, such that one end of the conductive coil protrudes beyond the back panel to make contact with a power bus underneath the upper plane running across the whole platform, and another end of the conductive coil after bending at right angle is made to pass through a hole in the spacer to make connection with a circuit board on the back side of the spacer;

two parallel channels are formed on the front surface and on the opposite end of the spacer relative to the position of the lugs, wherein two conductive plates are respectively fitted, such that the conductive plates are in a position to make contact with the two pins of the indicator lamp, and a pin protruding perpendicularly from each plate penetrates the spacer to make contact with the circuit board, such that the indicator lamp through the circuit board receives power from the conductive coils.

4. A modular interworking interface module for telecommunication switching systems as claimed in claim 3, wherein the I/O ports of the tracking terminal are each mounted with a spring tab connected to a common wire lead, through which the conductive wire is connected to the circuit board.

5. A modular interworking interface module for telecommunication switching systems as claimed in claim 1, wherein the output connection module contains a quadrangular base module and two tubular pipes, wherein

the quadrangular base module and two tubular pipes are formed by two matching half sections of an integrated module shell, each forming a cross-section of the tubular pipes and base module;

a fixed core wire for an output port is placed inside the base module linking to the back of the output port of the interworking terminal;

two conductive wires are respectively encapsulated in a hollow core of the two tubular pipes, such that one end of the first conductive wire is connected to a fixed core wire for an output port, while another end is connected to the output port of the system terminal;

whereas one end of the second conductive wire is connected to the fixed core wire for the output port through a first switching means also housed in the base module, while another end is connected to the output port of the tracking terminal.

6. A modular interworking interface module for telecommunication switching systems as claimed in claim 1, wherein the input connection module contains a rectangular base module and two tubular pipes, wherein

the rectangular base module and two tubular pipes are formed by two matching half sections of an integrated module shell, each forming a cross-section of the tubular pipes and connection module;

a fixed core wire for input port is placed inside the base module linking to the back of the input port of the interworking terminal;

two conductive wires are respectively encapsulated in the hollow core of the tubular pipes, such that one end of the first conductive wire is connected to the fixed core wire for input port, while another end is connected to the input port of the system terminal;

whereas one end of the second conductive wire is connected to the fixed core wire for input port through a first switching means also housed in the base module, while another end is connected to the input port of the tracking terminal.

7. A modular interworking interface module for telecommunication switching systems as claimed in claim 5, wherein the first switching means is formed by two matching half sections fitted together by multiple locking blocks and holes, forming a downward curving shape with two legs;

in between these two half sections a first spring arm and a second spring arm in the shape of an archery bow are fitted on to the special structure on the internal surface of the first switching means, such that two ends of the first spring arm are respectively connected to the fixed core wire for output port and the output port of the tracking terminal forming a normally closed circuit;

whereas one end of the second spring arm is capped with an insulation sleeve, corresponding to the near end of the first spring arm, and the same end is disposed in between the fixed core wire for output port and the first spring arm, the two spring arms remaining separate without external applied force;

a terminal resistor is placed in a trench located on the second leg, such that one end of the terminal resistor makes contact with the internal surface of the metal plated sidewall of the locking block, and another end is connected to the second spring arm.

8. A modular interworking interface module for telecommunication switching systems as claimed in claim 6, wherein the first switching means is formed by two matching half sections of a module shell fitted together with multiple locking stubs and holes, forming a downward curving shape with two legs;

in between these two half sections a first spring arm and a second spring arm in the shape of an archery bow are fitted on to the special structure on the internal surface of the first switching means, such that two ends of the first spring arm are respectively connected to the fixed core wire for output port and the output port of the tracking terminal forming a normally closed circuit;

whereas one end of the second spring arm is capped with an insulation sleeve, corresponding to the near end of the first spring arm, and the same end is disposed in between the fixed core wire for the output port and the first spring arm, the two spring arms remaining separate without external applied force;

a terminal resistor is placed in a trench located on the second leg, such that one end of the terminal resistor makes contact with the internal surface of the metal plated sidewall of the locking block, and another end is connected to the second spring arm.

9. A modular interworking interface module for telecommunication switching systems as claimed in claim 5, wherein

fixed ribs are created on top and bottom ends and on an internal surface of the right half section of tubular extensions, whereby trenches are formed on the corresponding top and bottom ends and on an internal surface of the left half section of tubular extensions for mutual locking on to each other when fitted together;

multiple locking holes and stubs are respectively formed on the free end and in the middle of the tubular pipes extensions from the integrated module shell, in corresponding positions and on opposing surfaces, for securely fitting two matching half sections of the tubular pipe extensions using ultrasonic means;

multiple indents are formed at the specific locations on the external wall of the two tubular pipes to prevent the tubular pipes of the input connection module and output connection module from rubbing against each other to cause a short circuit.

10. A modular interworking interface module for telecommunication switching systems as claimed in claim 6, wherein

fixed ribs are created on the top and bottom ends on the internal surface of the right half section of tubular extensions, whereas trenches are formed on the corresponding top and bottom ends on the internal surface of the left half section of tubular extensions for locking on to each other when fitted together;

multiple locking holes and stubs are formed on respective half sections on the free end and in the middle of the tubular pipes extensions from the integrated module shell, in corresponding positions and on opposing surfaces, for securely fitting two matching half sections of the tubular pipe extensions with ultrasonic means;

multiple indents are formed at the specific locations on the external wall of the two tubular pipes to prevent the tubular pipes of the input connection module and output connection module from rubbing against each other to cause a short circuit.

11. A modular interworking interface module for telecommunication switching systems as claimed in claim 5, wherein the output connection module has a core wire for the monitor terminal, and the core wire for monitor terminal is linked through an attenuation resistor to the fixed core wire for the output port on one end, and to the back of the monitor terminal on another end;

and on the perimeter of the core wire for monitor terminal a second switching means is installed, wherein

two parallel channels are formed on the sidewall of an insulation block in the second switching means (60), in which two switch blades are respectively placed;

wherein each has a contact pin protruding perpendicularly, allowing the contact pins to penetrate the spacer to make contact with the circuit board on the other side, thus forming a switch for the tracking indicator lamp;

a pusher is created at the bottom of the insulation block extending towards the remote end, whose slanted surface corresponds to the top portion of the core wire for a monitor terminal.

12. A modular interworking interface module for telecommunication switching systems as claimed in claim 1, wherein at both top and bottom edges of a mounting frame a guide rail and a retainer are installed for securing the mounting frame in a module slot between upper and lower planes of the backbone chassis;

and pairs of guide blocks and engagement holes are formed on the opposing surfaces of the upper and lower planes;

such that each pair of guide blocks and a matching engagement hole are disposed in a straight line across the upper and lower planes corresponding to the position of the module slot, and also the positions of guide blocks and engagement holes correspond to the guide rails and retainers on the mounting frames for securely mounting the interworking interface modules;

on the back of the backbone chassis a power bus is mounted on a cross bar just below the upper plane, whereon two copper strips are installed to form the power lines with opposite polarity of the power circuit for the interworking interface module.