JPS59134970A - Charging signal receiving device - Google Patents

Abstract

PURPOSE:To obtain an economical and small-sized device whose wiring quantity is also small by constituting so that a terminal array of a 12kHz charging signal receiving unit and a 16kHz charging signal receiving unit is the same as a terminal array of a 50kHz charging signal receiving unit. CONSTITUTION:A switch unit SWU' is loaded with a filter part FIL' which is used in common for obstructing both 12kHz and 16kHz. As a result, a terminal array of a charging signal receiving units SPU2' and SPU3' becomes the same as a terminal array of a charging signal receiving unit SPU1' for 50kHz, and it is connected only in parallel to both lines of a trunk line L. Accordingly, the charging signal receiving units SPU1', SPU2' and SPU3' can be inserted easily into the same upper stage unit frame. Accordingly, the terminal arrays of the charging signal receiving unit for 50kHz SPU1', the charging signal receiving unit for 12kHz SPU2' and the charging signal receiving unit for 16kHz SPU3' become the same.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an improvement in the structure of a billing signal receiving device for receiving 50 Hz, 12 kHz and 16 kHz billing signals, respectively.

(bl) Background of the Technology Generally, billing signals transmitted from a telephone office to a subscriber's premises via a subscriber line include a 50HEL billing signal transmitted between both lines of the subscriber line and the ground; A 12 kHz or 16 kHz billing signal transmitted between both lines is often used. Figure 1 shows an example of a receiving circuit for a 50 Hz billing signal, and Figure 2 shows a 12 kHz or 16 kHz billing signal. 1 is a diagram showing an example of a signal receiving circuit. In FIG. 1, a 50 Hz billing signal receiving unit RECI is connected between a subscriber line drawing line and the ground air. When a 50 Hz billing signal source SGI is connected between the subscriber line and the ground at the telephone office,
A charging signal S1 of 50 hertz is transmitted in phase through the image line,
It is received by the billing signal receiving unit RECI. The billing signal receiving unit REC1 outputs billing information C corresponding to the received billing signal S1. Note that since the billing signal S1 is transmitted between both lines in the same phase as described above, there is no risk of interfering with the subscriber's call. On the other hand, in FIG. 2, a charging signal receiving section REC2 for 12 kHz or a charging signal receiving section REC3 for 16 kHz is connected between both subscriber lines. In the telephone office, when a 12 kHz billing signal source SG2 or a 16 kHz billing signal source SG3 is connected between both subscriber lines, a 12 kHz billing signal S2 or a 16 kHz billing signal S3 is transmitted to both lines. and is received by the billing signal receiving section REC2 or RFe5. The billing signal receiving unit REC2 or RFe5
Also outputs charging information C corresponding to the received charging signal S2 or S3. In order to prevent the charging signal S2 or S3 from interfering with the subscriber's call, the charging signal receiving section REC2 or R
A filter section FIL2 or FIL3 for blocking 12 kHz or 16 kHz is provided after Fe5. FIG. 3 is a diagram showing an example of an automatic private branch exchange equipped with a function of receiving this type of billing signal. In FIG. 3, the automatic private branch exchange PBX is provided with a billing signal receiving device SPM between the office 1jlL and the office line trunk COT. The charging signal receiving device SPM receives the charging signal transmitted from the central office line and transmits the corresponding charging information C to the central office trunk COT. Such automatic private exchange 11 P
In order to accommodate B
The PM needs a function that can receive any of the billing signals S1 to S3.

(C1 Prior Art and Problems FIG. 4 is a diagram showing an example of a conventional charging signal receiving device, and FIG. 5 is a diagram showing an example of the configuration of a conventional charging signal receiving device. In FIG. 4, , 5 shown in FIG.
The charging signal receiving unit 5PU2 or 5PU3 equipped with all the receiving circuits for the 12 kHz or 16 kHz charging signal shown in FIG. 2 is a switch. Used with unit SWU. Each of the switches SWI to SW5 in the switch unit SWU is set to the A side when the central office line is housed in a telephone office that transmits the 50 Hz billing signal S1, and the 12 kHz or 1
When accommodated in a telephone office that transmits a 6 kilohertz billing signal S2 or S3, it is set to the B side. When set on the A side, the charge signal receiving unit 5PUI is connected between the office line and the office line trunk COT, and when set on the B side, the charging signal receiving unit 5PUI is connected between the office line and the office line trunk COT. A charging signal receiving unit 5PU2 or 5PU3 is connected to the charging signal receiving unit 5PU2 or 5PU3. In FIG. 5, a billing signal receiving unit 5PUI for 20 lines is inserted into the top unit frame, and a billing signal receiving unit 5PU2 or 5PU3 is inserted into the second unit frame.
is inserted for 20 lines, and a switch unit SWU for 20 lines is inserted into the bottom unit frame.

As is clear from the above description, in the conventional charging signal receiving device, the charging signal receiving unit 5PU2 is equipped with the charging signal receiving section REC2 and the filter section FIL2, and the charging signal receiving unit 5PU3 is equipped with the charging signal receiving section REC3. and a filter section FIL3 were installed. Therefore, the switch unit SWU connects the office line and the office line trunk COT with the charging signal receiving unisol l-3PUI,
5 sets of switches SWI to SW5 must be provided in order to connect one of SPU2 and 5PU3 (or billing signal receiving unit) and to supply a power supply voltage of -48 volts, which requires large holes and is expensive. There is a drawback that the number of wirings that connect the unit SWU, the billing signal receiving unit SPUI, and the billing signal receiving unit SPU2 or 5PU3 is increased. Note that if the unit frame into which the charging signal receiving unit 5PUI is inserted and the unit frame into which the charging signal receiving unit 5PU2 or 5PU3 is inserted are provided independently as shown in FIG. 5, the structure of the charging signal receiving device will also become larger. There are drawbacks.

(d) Purpose of the Invention An object of the present invention is to eliminate the drawbacks of the conventional billing signal receiving device as described above, and to realize a billing signal receiving device that is economical, compact, and requires less wiring.

(Ml) Structure of the Invention The object of the present invention is to provide a unit that receives a 50 Hz billing signal transmitted between a line of communication line and the ground, and a 12 kHz billing signal and a 16 kHz billing signal transmitted between both lines of the communication line, respectively. In a billing signal receiving device comprising:
said 12 kHz billing signal receiving unit and said one
The charging signal blocking filters are removed from each of the 6 kHz charging signal receiving units and mounted in separate units, and the terminal arrangement of the 12 kHz charging signal receiving unit and the 16 kHz charging signal receiving unit is changed to that of the 50 kHz charging signal receiving unit. This is achieved by making the terminal arrangement the same.

In　Embodiments of the invention An embodiment of the present invention will be described below with reference to the drawings.

FIG. 6 is a diagram showing a billing signal receiving device according to an embodiment of the present invention, and FIG. 7 is a diagram showing the configuration of a billing signal receiving device according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 6, the charging signal receiving unit 5PU2° for 12 kHz and the charging signal receiving unit 5PU2 for 16 kHz each have a charging signal receiving unit REC2 for 12 kHz or a charging signal receiving unit REC2 for 16 kHz. Only the signal receiving section REC3 is mounted, and the filter section FIL2 or FTL3 is removed as shown in FIG. On the other hand, the Swiss Tunisoto SWU' has 1
A filter section FIL' is mounted which is commonly used for blocking 2 kHz and 16 kHz. As a result, charging signal reception unit) SPU2' and 5PU3'
The terminal arrangement of the charging signal receiving unit 5 for 50 Hz is
The terminal arrangement is the same as that of PUI', and it is simply connected in parallel to both lines of the central office line. Therefore, as shown in FIG.
and 5PU3' can be easily inserted into the same upper unit frame, and switch unit SWU
'The wiring between the two will also be reduced. Switch unit SWU
The filter section FIL' installed in ' is switched between 12 kHz blocking, 16 kHz blocking, and all-frequency passing by switch SW6, and is always inserted between the central office line and the central office line trunk COT. .

As is clear from the above explanation, according to this embodiment, 50
Billing signal reception units for Hertz (unison) SPUlo, billing signal reception units for 12 kilohertz 5PU2' and 1
The terminal arrangement of SPU3' (6 kilohertz billing signal receiving unit) is the same, making it easier to insert into the same unit frame, and the wiring between it and switch unit SWU' can be significantly reduced. Also switch unit SWU
Although the switch SW6 in ' is also required to be a three-point changeover switch, the number of switches is greatly reduced, so it is expected to be smaller and more economical.

It should be noted that FIGS. 6 and 7 are only one embodiment of the present invention, and for example, the configuration of the switch unit 5WU1 is not limited to that shown, and many other modifications may be considered. However, in either case, the effects of the present invention remain the same. Further, the configuration of the billing signal receiving device is not limited to one in which 20 lines are inserted each, and many other modifications may be considered, but the effects of the present invention will not change in any case.

Furthermore, it goes without saying that the object of the present invention is not limited to automatic private branch exchanges PBX.

(Advantageous Effects of the Invention) According to the present invention, it is possible to realize an economical, small-sized billing signal receiving device with a small amount of wiring.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of a receiving circuit for a 50 Hz charging signal, Fig. 2 is a diagram showing an example of a receiving circuit for a 12 kHz or 16 kHz charging signal, and Fig. 3 is a diagram showing an example of a receiving circuit for a 12 kHz or 16 kHz charging signal. Diagram showing an example of a type private branch exchange, No. 4
5 shows an example of the configuration of a conventional charging signal receiving device. FIG. 6 shows a charging signal receiving device according to an embodiment of the present invention. , FIG. 7 is a diagram showing the configuration of a billing signal receiving device according to an embodiment of the present invention. In the figure, L is a subscriber line or central office line, PBX is an automatic private branch exchange, SPM is a billing signal receiving device, COT is a central office line trunk, NW is a network, and S0 PUI to 5PU3 and 5PUI' to 5PU3' are billing signal receiving devices. units, SWU and SWU' are switch units, RECl to REC3 are billing signal receiving units,
FTL2, FIL3 and FIL' are filter parts, SW
I to SW6 are switches, S01 to SG3 are billing signal sources, Sl to S3 are billing signals, and C is billing information. 1 1st mouth 2nd mouth 3rd mouth 4th mouth 5th figure rod 7 Figure-713-

Claims (1)

[Claims] A billing signal receiving device comprising a unit that receives a 50 Hz billing signal transmitted between a line of a communication line and the ground, and a 12 kHz billing signal and a 16 kHz billing signal transmitted between both lines of the communication line, Billing signal blocking filters are removed from the 12 kHz billing signal receiving unit and the 16 kHz billing signal receiving unit, respectively, and the filters are mounted in separate units, and the terminal arrangement of the 12 kHz billing signal receiving unit and the 16 kHz billing signal receiving unit is provided. A billing signal receiving device characterized in that the terminal arrangement is the same as that of the 50 kilohertz billing signal receiving unit.