JPS5828990B2 - Billing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charging system that can reduce the number of trunks having charging signal transmission or reception functions compared to conventional charging systems.

FIG. 1 is a diagram showing a conventional billing system, in which 1 is the originating station, 2 is the relay station (for example, a toll station), 3 is the destination station, 4 is the line link network of the originating station 1, 5 is station 1
6 is the trunk link network of the relay station 2, 7 is the trunk link network of the destination station 3, 8 is the line link network of the destination station 3,
OGT-MP is an outgoing trunk with billing pulse reception function, I
CT-MP is a human trunk with billing pulse transmission function, OG
T is a general outgoing trunk, ICT is a general incoming trunk, A
is the calling party, B is the called party, MP is the meter pulse or billing pulse, and t is the trunk line between the calling station 1 and the relay station 2, respectively.

Although it is not shown in FIG. 1 that the originating station 1 has one outgoing trunk OGT-MPL with a billing pulse receiving function, in reality, a plurality of outgoing trunk OGT-MPs with a billing pulse receiving function are provided. Similarly, the relay station 2 has a plurality of charging pulse transmission function trunks I.
It is equipped with a CT-MP.

And outgoing trunk OGT-M with charging pulse reception function
P is the corresponding human trunk IC with charging pulse transmission function
It is connected to T-MP via trunk line L.

When the calling subscriber A makes a long distance call to the called subscriber B, the trunk line l transmits the general call signal and also the charging pulse MP.

The billing pulse MP is generated by the human trunk ICT-MP with a billing pulse transmission function, and is received by the outgoing trunk OGT-MP with a billing pulse receiving function.

If the calling station 1 to which the calling subscriber A belongs and the destination station 3 to which the called subscriber B belongs exist in the same city, the trunk ICT-MP with charging pulse transmission function transmits the charging pulse M.
Do not send P.

A trunk line that is used for both eg long distance calls with charging pulses and eg local routes without charging pulses is called a merged train.

By the way, the outgoing trunk OGT-M with billing pulse reception function
P is more expensive than general outgoing trunks.

The reason is that a billing pulse receiving circuit, a filter, etc. are required.

For almost the same reason, trunk I with billing pulse transmission function
CT-MP is more expensive than general ingress trunks.

In the conventional charging system as shown in Fig. 1, even if the trunk line l is used infrequently on an intercity route with charging signals, an output terminal with a charging pulse receiving function is installed at the end of each trunk line l. Since the trunk OGT-MP and the trunk ICT'-MP with billing pulse transmission function are provided, there is a drawback that the equipment cost of the entire system is high.

The present invention aims to eliminate the above-mentioned drawbacks, and it is possible to reduce the number of outgoing trunks with charging pulse receiving functions and personal trunks with charging pulse transmitting functions compared to conventional ones, and to reduce the number of outgoing trunks with charging pulse receiving functions and the number of trunks with charging pulse transmitting functions. The purpose is to provide a billing method that can reduce overall equipment costs.

Therefore, the billing method of the present invention is a telephone exchange that transmits and receives billing signals during a call between telephone exchanges via trunks and trunks in two-wire DC signal format (LM, LP, or LD signal format). In the system, in addition to functioning as a general trunk at the billing signal sending station, a defense trunk that has the function of internally through-connecting the ingress and egress sides, and the ingress and egress sides are accommodated in the trunk link network. At the same time, a trunk with billing signal transmission function is installed at the billing signal receiving station, and an outgoing side that does not function as a general trunk is connected to the defense money receiving trunk of the billing signal transmitting station via the trunk line. Install a non-charging outgoing trunk with a function of internally through-connecting the incoming and outgoing sides, and an outgoing trunk with a charging signal reception function in which the outgoing and incoming sides are accommodated in the trunk link network, and When performing this, the ingress and egress sides of the defense money receiving trunk are internally connected through-connected, and the ingress and egress sides of the defense money receiving trunk are internally connected through-connected, and the above-mentioned outgoing trunk with billing signal receiving function is connected internally. It is configured so that non-billing outgoing trunks with through connections, trunk lines, internal through-connection defense trunks, and trunks with billing signal transmission functions can be connected in series, and when making a general connection that does not require the transmission and reception of billing signals, the above defense funds will be charged. This system is characterized in that the incoming trunk and the non-charging outgoing trunk have functions as general trunks, and the non-charging outgoing trunk, the trunk line, and the defense money receiving trunk can be connected in series.

Hereinafter, the present invention will be explained with reference to the drawings.

Fig. 2 is a block diagram showing one embodiment of the present invention, and Fig. 3 shows an outgoing trunk with a billing pulse receiving function, an outgoing trunk, a trunk line, an incoming trunk, and a person trunk with a billing pulse sending function connected in series. It is a figure showing a state.

In FIG. 3, 9 indicates a charging pulse receiving circuit, 10 indicates a charging pulse sending circuit, and S indicates a relay contact of a switch network constituted by a line link network and a trunk link network.

Note that the same reference numerals as in FIG. 1 indicate the same parts.

At originating station 1, outgoing trunk O with billing pulse reception function
The ingress and egress sides of the GT-MP are both accommodated in the trunk link network 5, and the ingress side of the outgoing trunk OGT is also accommodated in the trunk link network 5.

And outgoing trunk OGT-M with billing pulse reception function
The ingress side of P and the ingress side of the egress trunk OGT can be connected to subscriber A via a switch network, and the egress side of the egress trunk OGT-MP with billing pulse reception function can be connected to subscriber A via the switch network. It can be connected to the ingress side of the trunk OGT.

In the relay station 2, the outgoing side of the incoming trunk ICT is accommodated in the trunk link network 6, and the incoming and outgoing sides of the personal trunk ICT-MP with charging pulse transmission function are both accommodated in the trunk link network 6.

The output side of the incoming trunk ICT Ω and the output side of the human trunk ICT-MP with billing pulse transmission function are the outgoing trunk OG.
It is possible to connect to the input side of T via a switch network, and the output side of the human trunk ICT and the input side of ICT-MP with billing pulse transmission function can be connected via a switch network.

Outgoing trunk OGT of originating station 1 and incoming trunk IC of relay station 2
T is connected by a trunk line l.

Trunk line 1, outgoing trunk OGT-MP with billing pulse reception function of originating station 1, outgoing trunk 0GT of originating station 1, incoming trunk ICT of relay station 2, and person trunk ICT-MP with billing pulse transmission function of relay station 2 are as follows: It is a DC signal format.

If the calling station 1 to which the calling subscriber A belongs and the terminating station 3 to which the subscribed subscriber B belongs are located in the same city, or if there is no need to relay charging pulses for other reasons, the calling station 1 As shown in the dashed line, the outgoing trunk OGT is connected, and at relay station 2, the incoming trunk ICT and the outgoing trunk OG are connected.
T is connected as shown by the dashed line.

A conversation between the calling subscriber A and the called subscriber B then takes place.

In this case, no charging pulse is sent from relay station 2 to originating station 1.

If calling station 1 to which calling subscriber A belongs and destination station 3 to which subscribed party B belongs do not belong to the same rate band, that is, calling subscriber A
When making a long distance call, the originating station 1 makes a connection as shown by the dotted line, and the relay station 2 also makes a connection as shown by the dotted line.

To explain this in detail, when the calling station 1 receives the called subscriber number and recognizes that it is a long distance call, the incoming side of the trunk OGT-MP with billing pulse reception function connects to the calling subscriber A. The outgoing side of the outgoing trunk OGT-MP with billing pulse reception function is connected to the incoming side of the outgoing trunk OGT via a switch network.

The outgoing trunk OGT normally performs functions such as supplying call current and monitoring the other party's trunk, but when connected to the outgoing trunk OGT-MP with billing pulse reception function, it is operated by a relay contact (not shown). The input and output sides are connected through.

When the relay station 2 receives the called subscriber number and recognizes that it is a long distance call, it connects the incoming and outgoing sides of the human trunk ICT through a relay contact (not shown), and The output side of the ICT is connected to the input side of the trunk ICT-MP with charging pulse transmission function via a switch network.

And the human trunk ICT-M with billing pulse transmission function
The egress side of P is connected to the ingress side of the outgoing trunk OGT via a switch network.

A human trunk ICT-MP with a billing pulse transmission function existing in the relay station 2 operates the billing pulse transmitting circuit 10 and sends out a billing pulse MP.

This charging pulse MP is a through-connected incoming trunk I.
CT, trunk l and through-connected outgoing trunk OGT
Outgoing trunk OGT-M with billing pulse reception function through
P and is received by the receiving circuit 9.

Incidentally, as mentioned earlier, the call signal also flows on the trunk line l in the same way as the billing pulse.

The number of outgoing trunk OGT-MPs with billing pulse reception function installed at calling station 1 is determined by taking into account the volume of long-distance calls that require meter pulse relay, and is similarly installed at relay station 2. Human trunk ICT-MP with billing pulse transmission function
The number of calls is also determined in consideration of the amount of long distance calls that require meter pulse relay.

As is clear from the above explanation, according to the charging method of the present invention, in a telephone exchange network having a merged train, the number of trunks with a charging pulse sending function installed at a charging pulse sending station and the charging pulse receiving station can be adjusted. The number of installed outgoing trunks with billing pulse reception functions can be significantly reduced compared to conventional billing systems, thereby reducing equipment costs.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the conventional charging system, Fig. 2 is a block diagram of the charging system of the present invention, and Fig. 3 is an outgoing trunk with a charging pulse receiving function, an outgoing trunk, a trunk line, an incoming trunk, and a charging pulse transmission function. FIG. 3 is a diagram showing a state in which attendant trunks are connected in series. 1... Originating station, 2... Relay station, 3... Arriving station, 4...
・Line link network of originating station 1, 5... originating station 1
6... Trunk link network of relay station 6, 7... Trunk link network of destination station 3, 8... Line link network of destination station 3, 9... Charging pulse receiving circuit, 10...
Billing pulse transmission circuit, OGT...outgoing trunk, ICT
...Incoming trunk, OGT-MP...Outgoing trunk with billing pulse receiving function, ICT-MP...Person trunk with billing pulse sending function, S...Switch consisting of line link network and trunk link network・Network relay contact, l...relay line.

Claims (1)

[Claims] 1. In a telephone switching system in which billing signals are transmitted and received during a call between telephone exchanges via two-wire direct current signal type trunks and trunks, a billing signal transmitting station that does not function as a general trunk In addition to installing a non-charging hole trunk with a function of internally through-connecting the side and the output side, and a trunk with a charging signal transmission function where the input side and the output side are accommodated in the trunk link network, a charging signal receiving station is installed. In addition to the function as a general trunk, which is connected to the non-charging hole trunk of the billing signal transmitting station via the trunk line, the non-wire gold mine trunk has the function of internally through-connecting the outgoing side and the incoming side. In addition, when installing an outgoing trunk with a charging signal reception function whose outgoing and incoming sides are accommodated in the trunk link network, and transmitting and receiving charging signals, the incoming and outgoing sides of the non-charging hole trunk are internally connected to each other. Through connections are made, and the ingress and egress sides of the above-mentioned non-charging outgoing trunks are internally connected through-connecting, and the above-mentioned outgoing trunks with charge signal reception function, non-charging outgoing trunks with internal through-connections, trunk lines, and non-charging with internal through-connections are connected internally. It is configured so that a hole trunk and a human trunk with a billing signal transmission function can be connected in series, and when a general connection that does not require transmission and reception of billing signals is made, the non-charging hole trunk and non-charging outgoing trunk are given the function as a general trunk. , a charging system characterized in that a non-charging outgoing trunk, a trunk line, and a non-charging hole trunk can be connected in series.