JP3670713B2 - Terminal relay device used for toll collection line - Google Patents

Description

[0001]
[Industrial application fields]
In the present invention, a subscriber of a toll collection line connecting a telephone terminal having a toll collection function is provided with data such as a captain terminal having a data signal transmission / reception function on the toll collection line or a modem for personal computer communication. The present invention relates to a relay device for connecting a terminal and smoothly receiving a captain service, a personal computer communication service, or the like without being affected by a charge collection signal peculiar to a charge collection line.
[0002]
[Prior art]
When a subscriber who uses a so-called pink telephone line, which is a toll collection line, receives a captain service or personal computer communication service, etc., a general telephone line is drawn into the captain terminal or personal computer communication modem. Etc. (hereinafter referred to as “data terminals”), but in order to reduce the economic burden due to the duplication of lines, the data terminals are connected to the toll collection line, so-called “Pink telephone” toll collection. The connection (branch) was performed in parallel with the mobile phone.
[0003]
[Problems to be solved by the invention]
By the way, in the fee collection type line, when a communication exceeds a predetermined time, a fee collection signal (generally called a coin storage signal or a billing signal) arrives at a predetermined cycle. The period of the toll collection signal changes depending on the telephone charge system from time to time. For example, in the case of a local call, what used to be a 3-minute cycle has now changed to a 1-minute cycle. Also, the period becomes shorter depending on the distance.
[0004]
When the Captain terminal or PC communication modem is connected to the toll collection line by the above-mentioned conventional technology to receive the Captain service or the PC communication service, the next toll collection signal is activated after the data terminal is activated. If the transmission / reception of the data signal is completed before the arrival of, the problem due to the charge collection signal does not occur. However, if the period of the charge collection signal is shortened, the charge collection signal arrives during transmission / reception of the data signal. In the toll collection line, when the call is collected from the captain terminal or the PC communication modem, the polarity of the line is reversed for a certain time when the toll collection signal arrives. This inversion of polarity causes disturbance in the data signal transmitted and received in the captain terminal and the personal computer communication modem. As a result, the captain terminal or the modem for personal computer communication cannot transmit / receive accurate data, and there is a problem that data is garbled, characters are garbled, and an image is disturbed.
[0005]
In addition, when a Captain terminal and a PC communication modem are connected (branch) in parallel with a telephone terminal on a toll collection line, an act of making a call from a toll collection telephone while using the Captain terminal or PC communication modem If there is, there is a problem that noise is generated in the captain terminal or the personal computer communication modem due to the PB signal transmitted from the dial part of the telephone and the signal is disturbed.
[0006]
In general, captain terminals and communication modems that communicate at low speeds use a frequency modulation method (FSK), and data transmission methods using a voice band (CCITT V series recommendation) V. 21, data of 1 and 0 is transmitted at a communication speed of 300 b / s using the high group frequency f1 and the low group frequency f2.
[0007]
Therefore, when a PB signal close to the frequency band is mixed, or when a toll collection signal in which the polarity of the communication line is reversed is mixed, an influence such as data corruption occurs.
[0008]
The present invention has been made to solve the above problems, and its purpose is to charge a fee from a fee collection line when attempting to receive a captain service or a personal computer communication service using a fee collection line. It is an object of the present invention to provide a terminal relay device that prevents a data signal to be transmitted or received from being disturbed or garbled by a collection signal or a PB signal generated by a telephone terminal connected in parallel.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, there is provided a relay device for connecting a data terminal having a data signal transmission / reception function to a communication line through which a signal used for toll collection is transmitted. A path starting from the communication line to the data terminal, a terminal activation detecting unit for detecting a call of the data terminal, a line closing unit for closing the communication line in accordance with the detection of the terminal activation detecting unit, The signal that is connected between the terminal activation detection unit and the line closing unit, and is used for the toll collection as a pseudo line independent of the communication line on the terminal activation detection side is passed through the terminal activation detection unit A terminal relay apparatus used for a toll collection line, characterized by comprising a pseudo-wire connection unit for preventing propagation to a data terminal.
[0010]
In the second invention of the present invention, a relay for connecting a communication terminal or a communication terminal facility and a data terminal having a data signal transmission / reception function in parallel to a communication line through which a signal used for toll collection is transmitted. An apparatus, a path from the communication line to the data terminal includes a terminal activation detection unit that detects a call of the data terminal, and a line that closes the communication line in accordance with the detection of the terminal activation detection unit A closing part, a first line closing detecting part for detecting closing of the communication line, and a second line closing detecting part provided in a path from the communication line to the communication terminal or the communication terminal equipment A first line opening unit that opens a path from the communication line to the data terminal with the detection of the terminal, and is connected between the terminal activation detecting unit and the line closing unit, the terminal activation detecting unit side Independent of the communication line A pseudo-line connection unit that prevents a signal used for toll collection as a similar line from propagating to the data terminal via the terminal activation detection unit, and extends from the communication line to the communication terminal or communication terminal equipment The route includes the second line closing detection unit that detects the closing of the communication line, and the communication line or the communication terminal equipment from the communication line according to the detection of the first line closing detection unit. A terminal relay device used for a toll collection line, characterized by comprising a second line opening unit for releasing a route to reach.
[0011]
In the terminal relay device described above, it is preferable that the pseudo-wire connection unit is constituted by a transformer.
[0012]
[Action]
In the terminal relay apparatus used for the charge collection type line of the first invention, means for passing the data signal but blocking the propagation of the charge collection signal is provided in the route from the communication line to the data terminal, and the data terminal is connected to this. By connecting, even if the toll collection signal arrives at a predetermined period and the polarity of the toll collection line is inverted for a certain period of time, the propagation of the inverted signal is prevented and the disturbance of the data signal transmitted and received by the data terminal does not occur .
[0013]
In addition to the above, in the terminal relay device used for the toll collecting line of the second invention, in addition to the above, when the terminal activation detecting unit detects the call of the data terminal, the line closing unit is operated to operate the data terminal. Was made possible by the communication terminal etc. while using the data terminal by opening the path of the communication terminal etc. connected in parallel by detecting the closure on the communication line side However, the data signal transmitted and received by the data terminal is prevented from being disturbed.
[0014]
【Example】
Embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, reference numeral 3 denotes a toll collecting line data signal relay apparatus (hereinafter abbreviated as a relay apparatus in some cases), and a toll collecting telephone (hereinafter abbreviated as a telephone in some cases) through the relay apparatus 3. 4 and a captain terminal or a personal computer communication modem (hereinafter referred to as a data terminal in some cases) 5 are connected in parallel to the toll collection line 21.
[0016]
In the relay device 3, the path from the toll collection line 21 to the data terminal 5 has a pseudo office line loop detection unit 37 that detects a call caused by the activation of the data terminal 5, and a detection by the pseudo office line loop detection unit 37. Accordingly, a station line connection unit M35 for closing the toll collection line 21, a station line loop detecting unit B33 for detecting the closing of the toll collection line 21, and a path on the telephone 4 side described later are provided. In response to the detection of the received office line loop detection unit A31, between the office line cutting unit B34 that opens the path from the toll collection line 21 to the data terminal 5, and between the pseudo office line loop detection unit B37 and the office line connection unit M35 To prevent the toll collection signal from propagating to the data terminal 5 through the pseudo office loop detector 37 by using the pseudo office loop detector 37 as a pseudo circuit independent of the toll collection line 21. Pseudo station line Comprising a connection part 36, a communication power source 38 of the pseudo station line side. On the other hand, in the route from the toll collection line 21 to the telephone set 4, the office line loop detection unit A31 for detecting the closing of the toll collection type line 21 due to the call of the telephone set 4 and the above-mentioned office line loop detection unit B33. And an office line cutting unit A32 that opens a route from the toll collection line 21 to the telephone 4 in accordance with the detection.
[0017]
FIG. 2 shows the above embodiment in which the data terminal 5 is activated, connected to the captain information center 1, absorbs a charge collection signal specific to the charge collection line, and screen information is stably obtained in the data terminal 5 such as a captain terminal. It is a system block diagram which made it easy to understand the operation and action of the whole.
[0018]
In FIG. 2, the captain information center 1 includes a host computer 11. The relay device 3 is connected to the host computer 11 via a toll collection line 21 of the public telephone network 2. The office line loop detection unit A31 has a detection relay A. The office line loop detection unit B33 has a detection relay B. The office line pseudo office line connection unit 36 includes a transformer. The pseudo office loop detection unit 37 includes a detection relay M. The local line cutting unit 32 is configured by a break contact b of the detection relay B. The office line cutting unit 34 is configured by a break contact a of the detection relay A. The office line connection unit 35 is configured by a make contact m of the detection relay M. A pseudo station line is formed by the secondary side of the transformer of the office line pseudo office line connection unit 37 and the communication power supply 38, and the data terminal 5 is connected to the pseudo terminal line through the pseudo station line loop detection unit 37.
[0019]
The operation and action of the toll collecting line data signal relay device 3 will be described below with reference to FIG.
[0020]
When the data terminal 5 such as a captain terminal is activated, the contact is closed, and a loop circuit passing through the secondary side of the transformer of the communication power source 38, the pseudo station line detection unit 37, and the station line pseudo station line connection unit 36 Is configured, and the detection relay M of the pseudo line loop detection unit 37 is operated by the communication power supply 38. As the relay M operates, the contact m of the office line connection unit 35, which is the contact point thereof, is closed, so that the office line loop detection unit B33, the office line disconnection unit B34, the office line connection unit M35, and the office line pseudo office line connection unit 36 A loop circuit passing through the shore line on the primary side of the transformer is configured to activate the public telephone network 2. The public telephone network 2 is connected to the captain information center 1 by dialing from the data terminal 5 such as a captain terminal.
[0021]
Since the telephone line to which the relay device 3 is connected is the toll collection line 21, when the data terminal 5 such as the captain terminal ends dialing and the communication partner such as the captain information center 1 responds, the toll collection line 21 A signal with a reversed polarity, which is a toll collection signal, arrives. Thereafter, a charge collection signal arrives at a predetermined cycle according to the distance to the communication partner, and the polarity of the charge collection type line 21 is reversed for a certain time. However, the data terminal 5 such as a captain terminal is stabilized by a pseudo-station line circuit independent of the toll collection line 21 by the transformer of the office line pseudo-station line connection unit 36. Even if the polarity is reversed, it is not affected at all. That is, by interposing this transformer and electrically connecting the toll collection line 21 and the data terminal 5, the primary side (toll collection line 21 side) is placed on the secondary side of the transformer (data terminal 5 side). Thus, the propagation of the toll collection signal is prevented to the extent that an impulse signal (the FSK modulation wave is hardly affected) is generated only at the moment when the polarity of the toll collection signal is reversed.
[0022]
Therefore, in the data terminal 5 such as a captain terminal, the propagation of the toll collection signal is prevented by the circuit configured by the transformer, so even if the toll collection signal arrives during data transmission / reception, the data signal is disturbed Without disturbing the information screen of the captain or garbled characters in personal computer communication.
[0023]
When the data terminal 5 is activated, as described above, the pseudo office line loop detection unit 37 detects a call and acts on the office line connection unit M35. As a result, the toll collection line 21 is activated in a loop, and the data terminal 5 is ready to make a call. Further, the office line loop detection unit B33 detects a call from the data terminal 5, acts on the office line disconnection unit A32, and disconnects (releases) the toll collection telephone 4 from the toll collection line 5. That is, since the detection relay B of the office line loop detection unit B33 operates and the contact b of the office line cutting unit 32, which is the contact point, opens, the path from the toll collection line 21 to the telephone 4 is opened. Even if the toll collecting telephone 4 is erroneously activated during communication of the data terminal 5 such as a terminal, the data terminal 5 is not affected at all.
[0024]
On the contrary, when the toll collecting telephone 4 is in use, the contact of the toll collecting telephone 4 is closed and the detection relay A of the office loop detecting section A31 is operated, so that the contact a of the office line cutting section B34 which is the contact opens. Since the route from the toll collection line 21 to the data terminal 5 is opened, the toll collection telephone 4 is not affected even if the data terminal 5 is erroneously activated.
[0025]
In the above embodiment, the data terminal 5 cannot collect a fee because no fee collection signal is transmitted to the data terminal 5. However, with the toll-collection type line, there is no problem in charge because the used call charge can be charged in the same way as a general subscriber. By the way, a toll collection type public telephone installed on the street cannot charge a fee at a later date, so it is difficult to apply the present invention in terms of billing at present.
[0026]
Further, in the above embodiment, the configuration is such that one call of the data terminal or the telephone terminal is detected and the other route is automatically opened. It may be switched by a manual switch so as to be connected only to the terminal side. In other words, a portion (35, 36, 37, 35 in FIG. 1) is connected to form a pseudo line that allows the data signal to pass through the path from the toll collection line to the data terminal but prevents the toll collection signal from propagating. 38) may be carried out, and at least, it is possible to prevent the captain's information screen from being disturbed by a toll collection signal, or garbled characters in personal computer communication.
[0027]
Further, the present invention does not limit what is connected to the toll collection line. The toll-collection line is usually connected to a rented or purchased toll-collection phone, but there are also examples of connecting a PBX (private branch exchange) etc. to clarify the usage fee of the phone. It can be seen that the present invention is applicable to such an example.
[0028]
【The invention's effect】
According to the terminal relay apparatus used for the toll collection line of the first invention of the present invention, even if the type of the public telephone line of the customer is the toll collection line, information of the captain information center, information by personal computer communication, etc. Is stably obtained without being affected by the toll collection signal. In addition, the apparatus itself can be manufactured at a relatively low cost, and the connection is not limited to a particular model and is versatile. Furthermore, since it is only connected to a communication line, a communication terminal, etc., and a data terminal, it has practicality and usefulness such as easy use.
[0029]
In addition to the above, according to the terminal relay apparatus used for the toll collection line of the second invention of the present invention, in addition to the above, the call of one terminal connected in parallel is automatically detected and the other terminal is Since the data terminal is disconnected from the line, the data transmitted / received by the data terminal is not affected even if the data terminal is mistakenly transmitted from the communication terminal during use. Conversely, in a communication terminal or the like, even if the data terminal is erroneously activated during use, the communication of the communication terminal or the like is not affected.
[0030]
In addition, when a transformer is used as a means for preventing the toll collection signal propagation in the above terminal relay device, it can be implemented easily and at a lower cost, and the connection is more versatile. Can be.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment according to the present invention. FIG. 2 is a system configuration diagram for explaining the operation and action of the embodiment.
1 ... Captain Information Center 11 ... Host computer (HC)
2 ... Public telephone network 21 ... Toll collection type line 3 ... Data signal relay device 31 for toll collection type line ... Station loop detector A
32 ... Office line cutting part A
33 ... Office loop detector B
34 ... Office line cutting part B
35 ... Office line connection M
36 ... Office line pseudo office line connection unit 37 ... Pseudo office line loop detection unit 38 ... Communication power supply 4 ... Toll collection type telephone 5 ... Captain terminal or personal computer communication modem (data terminal)

Claims (3)

A relay device for connecting a data terminal having a data signal transmission / reception function to a communication line through which a signal used for charge collection is transmitted,
In the route from the communication line to the data terminal,
A terminal activation detection unit for detecting a call of the data terminal;
A line closing unit that closes the communication line in accordance with the detection of the terminal activation detection unit;
The signal that is connected between the terminal activation detection unit and the line closing unit, and is used for the toll collection as a pseudo line independent of the communication line on the terminal activation detection side is passed through the terminal activation detection unit A terminal relay apparatus for use in a toll collection line, comprising: a pseudo-wire connection unit for preventing propagation to a data terminal. A relay device for connecting a communication terminal or communication terminal equipment and a data terminal having a data signal transmission / reception function in parallel to a communication line through which a signal used for toll collection is transmitted,
In the route from the communication line to the data terminal,
A terminal activation detection unit for detecting a call of the data terminal;
A line closing unit that closes the communication line in accordance with the detection of the terminal activation detection unit;
A first line closing detection unit for detecting the closing of the communication line;
A first line opening unit that opens a path from the communication line to the data terminal as detected by a second line closing detection unit provided on the path from the communication line to the communication terminal or the communication terminal facility When,
The signal that is connected between the terminal activation detection unit and the line closing unit, and is used for the toll collection as a pseudo line independent of the communication line on the terminal activation detection side is passed through the terminal activation detection unit A pseudowire connection for preventing propagation to the data terminal,
In the route from the communication line to the communication terminal or communication terminal equipment,
The second line closing detection unit for detecting the closing of the communication line;
And a second line opening section that opens a path from the communication line to the communication terminal or the communication terminal facility in accordance with the detection of the first line closing detection section. Terminal relay device used for 3. The terminal relay apparatus used for a toll collecting line according to claim 1 or 2, wherein the pseudo-wire connection unit is constituted by a transformer.

Images