JPH0831928B2 - Telephone device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a telephone device which receives a dial number operated by being connected to a station line to which a charging signal does not arrive and which generates a charging signal.

[Prior Art] Conventionally, in a telephone device connected to an office line to which a charging signal does not arrive, when a user goes off-hook to make a call, the exchange confirms this and identifies a caller who allows dialing. It is sent to a telephone device, and the user confirms this dial tone and then presses a predetermined dial number to make a call. At the same time, the telephone device determines the presence or absence of the area code by detecting the dialed number and determines the charging cycle based on the result of this determination. When the other party responds, the determined charging cycle is determined. I am trying to register the frequency.

Also, it takes about 500 ms until the exchange side confirms the call from the telephone device, forms the acceptance state of the dial number sent from the telephone device in the outgoing register, and sends the dial tone. .

[Problems to be Solved by the Invention] Therefore, the conventional telephone device operates normally if the user performs dial operation after confirming the caller, but if the dial operation is performed without confirming the dial tone, There is a problem that the number of dial digits accepted in the transmission register on the exchange side and the number of dial digits operated by the user do not match, resulting in incorrect connection.

That is, in the conventional telephone device connected to the office line to which the charging signal does not arrive, the dial number pressed by the user before the dial tone is detected is transmitted, and at the same time, the dial number is detected to detect the area code. Since the cycle of the charging signal is determined based on the result of this judgment based on the result of this judgment, after detection of the other party's response, the frequency is incremented at the correct charging cycle according to the dial number pressed, There was a problem in that a dial signal was sent to the exchange before the dial tone was detected, resulting in an incorrect connection, resulting in a contradiction in which the frequency multiplication result and the connection destination do not match.

[Means for Solving the Problem] In order to solve such a problem, a telephone device according to the present invention sends a dial signal operated before detection of a dial tone to a station line and based on this dial signal. A means for prohibiting the selection of the cycle of the billing signal and allowing the dial signal to be transmitted to the central line by detecting the dial tone, and receiving a predetermined number of digits of the dial signal transmitted to the central line. It is provided with means for selecting the cycle of the charging signal and means for generating the charging signal based on the cycle of the charging signal selected when the other party's response is detected.

[Operation] If the dial operation is performed before the dial tone is detected, sending of this dial signal to the office line and the selection of the cycle of the billing signal based on this dial signal are prohibited, and the dial call is made after the dial tone is detected. When the operation is done,
The dial signal is sent to the central office line, a predetermined number of digits is received, the cycle of the billing signal is selected, and when the partner response is detected, the billing signal of the selected cycle is generated.

EXAMPLES Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a telephone device according to the present invention. In the figure, 1 is a switching device, 2 is a frequency register, 3 is a general telephone, and 4 is a public telephone. The switching device 1 is configured as follows. That is, 10 is a control circuit for controlling the entire switching device, 11 is a charge table section, 12 is a partner response monitoring circuit, 13 is a dial tone detection circuit, 14 is a billing signal generating circuit, 15 is a dial signal receiving circuit, 16 and 17 are loop monitoring circuits. A, B and C are relays, a, b and c are contacts of relays A, B and C, respectively, and L1 and L2 are station line terminals.

The operation of the telephone device configured as above will be described.
First, in order to describe the calling operation, a case where the calling operation of the general telephone 3 out of the ordinary telephone 3 and the public telephone 4 goes off-hook will be described.

When the ordinary telephone 3 is off-hook for the purpose of making a call, if the public telephone 4 is on-hook at this time, the loop monitoring circuit 16 detects the off-hook of the ordinary telephone 3 and operates. Further, the control circuit 10 detects the operating state of the loop monitoring circuit 16 and recognizes that the general telephone 3 has gone off-hook, and drives the relay C so as to break the contact c which is normally made. As a result, the public telephone 4 is released from the office line.

Similarly to the above, when the public telephone 4 is off-hook, if the ordinary telephone 3 is on-hook at this time, the loop monitoring circuit 17 detects the off-hook of the public telephone 4 and operates. Then, the control circuit 10 detects the operating state of the loop monitoring circuit 17, recognizes that the public telephone 4 has gone off-hook, and drives the relay B to break the contact b that is normally made. As a result, the general telephone 3 is released from the office line.

Next, while the dial tone is sent from the exchange (not shown) and the dial tone detection circuit 13 detects the dial tone, when the dial is pressed by the off-hook telephone, the dial number is sent out.
This dial signal is sent to the circuit composed of the make contact a of the relay A, the varistor VR, and the capacitor C2 and disappears, and is not sent to the office line. At this time, the control circuit
No. 10 ignores the received dial signal because the dial tone from the dial tone detection circuit 13 cannot be detected even if the dial signal is received through the dial signal receiving circuit 15.

Then, a dial tone is sent from the exchange and the station line terminals L1 and L
When it comes through 2 and the diode bridge DB, the dial tone detection circuit 13 detects this dial tone and sends it to the control circuit 10. Then, the control circuit 10 receives the dial tone detected by the dial tone detection circuit 13 and drives the relay A to break and open the make contact a.

When the user makes a dial call after the make contact a is opened, this dial signal is received by the dial signal receiving circuit 15 and sent to the control circuit 10, and at the same time connected to the station line terminals L1 and L2. Sent to the exchange through the station line and received by the exchange.

Then, the control circuit 10 analyzes the dialed digits from the first received number of the dial signal received at this time to the number of a predetermined number of digits, judges the presence or absence of the area code, and responds to these numbers. Select the billing signal cycle. That is, for example, when the determined number is a long-distance number, the cycle of the charging signal which is set in advance in the fee table unit 11 and corresponds to this long-distance number is selected. That is, if the area code is XXX, the cycle of the billing signal of, for example, 90 seconds is selected.

In this way, an incoming signal is sent from the exchange to the other party by dialing, and when the other party responds, the other party response monitoring circuit 12 detects the other party's response and sends it to the control circuit 10 connected thereto. And the control circuit
10 recognizes the other party's response and drives the charging signal generation circuit 14 based on the cycle of the selected charging signal. That is, in this case, for example, the charging signal generation circuit 14 is driven once every 90 seconds to generate the charging signal.

In this way, the billing signal generated during a call with the other party due to the other party's response is detected by the frequency counting machine 2 and the frequency is incremented when the telephone being used is the ordinary telephone 3.
If the telephone being used is the public telephone 4,
This billing signal is counted up by a billing counting circuit provided inside the telephone 4 to collect the call charge.

As described above, the telephone device of the present invention has the dial tone detection circuit 13
The dial signal operated before the dial tone is detected by is configured not to be sent to the office line, and the dial signal operated after the dial tone is detected is sent to the office line and sent to the office line. The period of the charging signal is determined based on the dial signal.

As described above, in the telephone device according to the present invention, when the dial operation is performed before the dial tone is detected, the dial signal is sent to the office line and the billing signal based on the dial signal is sent. When the dialing operation is performed after the selection of the cycle is prohibited and the dial tone is detected, this dial signal is sent to the office line and a predetermined number of digits are received to select the cycle of the billing signal and the other party's response is sent. When the billing signal is detected, the billing signal of the selected cycle is generated, so that the billing signal of the correct cycle according to the operated dial number can be generated, and therefore, accurate frequency multiplication can be performed and Since the connection is made to the connection destination that matches the frequency count result, it is possible to eliminate the contradiction in which the frequency count result and the connection destination do not match.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone device according to the present invention. 1 ... Switching device, 2 ... Frequency register, 3 ... Ordinary telephone, 4 ... Public telephone, 10 ... Control circuit, 11 ... Charge table section, 12 ... Opponent response monitoring circuit, 13 ... Dial tone detection circuit, 14 ... billing signal generation circuit, 15 ... dial signal reception circuit, 16, 17 ... loop monitoring circuit, A, B, C ... relay,
a, b, c …… Relay contact, L1, L2 …… Station line terminal

Claims (1)

[Claims] 1. A telephone device for generating a billing signal according to a dial number operated by connecting to a station line to which a billing signal does not come, and a dial signal operated before detection of a dial tone to allow dialing. Means for prohibiting the transmission of the dial signal to the central office line and the selection of the cycle of the billing signal based on this dial signal, and permitting the transmission of the dial signal to the central office line by detecting the dial dial tone, and the dial dial tone. Means for receiving a predetermined number of digits of the dial signal sent to the office line after detection of the charge, and selecting the cycle of the charge signal, and the charge signal based on the cycle of the charge signal selected when the other party's response is detected. A telephone device having means for generating the telephone number.