JPS6243297A - Pb sender connection system - Google Patents

Abstract

PURPOSE:To receive various services using a PB signal for data transmission by a rotary dial telephone set, by connecting a PB sender and a relay line trunk by a special number dialing during call or hooking. CONSTITUTION:Not only on-hook in a subscriber's circuit 2 but also loop disconnection in a certain time due to hooking is monitored (with S1, S2) during call by a control means included in a call controller 3. When hooking is detected, the subscriber's circuit 2 waits for the next dial number reception; and if number '7' comes, it is reported to the call controller 3. Then, the call connector 3 forms the call path (c) of a switch network 4 to connect a PB sender 8 and a relay line trunk 6. When dialing sent from an originating subscriber A1 is received by the subscriber's circuit 2 thereafter, it is reported to the call controller 3, and a PB dial signal is sent from the PB sender 8 through the relay line trunk 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a PB sender connection method in a telephone exchange that enables new services for rotary dial subscribers.

[Conventional technology]

A conventional telephone exchange system that allows a rotary dial subscriber to select a trunk line for the PB dial signal selection method is configured as shown in FIG. 2, for example.

In this figure 2, 1 is subscriber A, 2 is subscriber circuit,
3 is a call control device, 4 is a switch network%, 5 is a tone trunk, and 6 is a trunk line trunk.

7 is a trunk line, and 8 is a PB sender. Note that symbols a, b, and e in the switch network 4 indicate call paths.

Next, the operation will be explained.

When the subscriber A1 goes off-hook, the subscriber circuit 2 detects the call and notifies the call control device 3, thereby controlling to form a call path a in the switch network 4 and tone the subscriber A1. Pull into trunk 5.

When the subscriber A1 hears the dial tone transmitted from the tone trunk 5 and performs a dialing operation, the dialing information due to the intermittent loop is read into the call control device 3 via the subscriber circuit 2.

The result of the call control device 3 analyzing dial information.

If it is a trunk line connection, the call control device 3 seizes the trunk line trunk 6 and sends a dial pulse from the trunk line trunk 6 to the trunk line 7. As a result, when the response from the other subscriber is read into the call control device 3 via the trunk trunk 6, the call control device 3 forms a call path b in the switch network 4 and initiates a call. A call connection is made between subscriber A1 and relay [7].

After this, the subscriber A1 on the calling side or the subscriber on the trunk line T side is put on hold, and when the subscriber circuit 2 or the trunk trunk 6 detects a call termination signal, it is transmitted to the call control device 3. ,
Switch network 40 call path b is released and the call is terminated.

On the other hand, when the format of the selection signal of the trunk line 7 is the PB dial format, when the dial signal is sent, the call control device 3 causes the switch network 4 to form a call path C, and transmits the PR dial signal from the PB sender 8 to the trunk line. The data is sent to the trunk line T via the trunk 6 to establish a connection.

[Problems to be Solved by the Invention] As described above, in the connection system of the conventional telephone exchange system, when the selection signal of the trunk line is the rotary dial signal system, no PR dial signal can be transmitted. Further, even with the PB dial system, signals can only be sent to the trunk line only when the trunk line selection signal is sent.

Incidentally, in recent years, various data terminals have come to exist as terminals in switching networks, and a wide variety of services have become available.

However, when considering data transmission using a telephone network, the most easily usable data transmitter is a PB telephone, which has been put into practical use in NTT's voice response system, Japan National Railways' Shinkansen ticketing service, etc. There is.

However, many rotary-dial telephones are still in use for general home use and for extension lines in private branch exchange systems, and therefore, there is a problem in that in such cases, the above-mentioned services cannot be obtained. there were.

This invention has been developed to solve these problems and to provide a PB sender connection that allows even a single-rotation dial telephone to function as a data terminal as described above and to receive various services. The purpose is to obtain a method.

[Means for solving problems]

In the PB sender connection method according to the present invention, a call control device is operated to connect a PB sender and a trunk line by dialing a special number during one call or by dialing a 7-way call.

[Effect]

The pH number connection system of the present invention is operated by a signal from a single rotary dial telephone, and transmits a PB dial signal to enable access to data call services.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. The hardware configuration of the embodiment of the present invention is the same as that of the conventional example shown in FIG. Since the only point is that the control function for connecting the PB sender shown in FIG. 1 is added to the control function shown in FIG. 1, the operation will be explained below according to the flowchart shown in FIG.

In this embodiment, the trigger for entering the PR dial signal sending process is a hooking 171 dial operation, and the trigger for leaving the sending process is described as a 7 hooking+"8" dial operation.

The process of reaching the call state is the same as the conventional exchange sequence, but the call control device 3 uses the control means included therein to monitor the termination of the call in the subscriber circuit 2 during one call (81, S2
At the same time, loop breakage within a certain period of time due to hunking is monitored in step S3. If hooking is detected, the subscriber circuit 2 waits for reception of the next dialed number in step S4 and notifies the call control device 3 that the number 1w71 has arrived. As a result, the call control device 3 forms the call path C of the switch network 4 in step S5, and
The B sender 8 and trunk line trunk 6 are connected. Subsequently, the dial sent by the calling subscriber A1 is sent to the subscriber circuit 2.
When received, the call control device 3 is notified and the PB sender 8 sends out a PB dial signal via the trunk trunk 6.

Then, when the calling subscriber A1 calls again, it is received by the subscriber circuit 2, and the call control device 3 performs step S.
When the next dialed digit 6 is received, and 181 is received, the call path C formed in the switch network 4 is released in step S7, and a normal call state is established. on the other hand.

If 17"181 is not received after the hooping operation, the one-step timer in step S8 returns to the call mode.

In this embodiment, the destination of the calling subscriber A1 is the trunk line 7, but the trunk line 7 may be either a trunk line of the PB dial signal system or a trunk line of the loop dial signal system.

It can also be applied not during a call with a trunk line, but during a call between extension lines.Furthermore, the trigger for this service may be a service start trigger based on a hooking plus special number, or a release trigger based on only hooking.0By the way, In the above embodiment, the signal sending device 71 is used as a PB sender, but in the case of using the MF flaw signal encoding system, the MF sender may be used, or a special device such as a serial tone train sending sender may be used.

〔Effect of the invention〕

As described above, according to the present invention, in a telephone exchange that accommodates a rotary dial telephone as an extension, the telephone exchange system monitors the dialing + special number dialing during a call, and when a corresponding pattern is detected, connects the PB sender to the trunk line, and connects the PB sender to the trunk line. Since the PB dial signal corresponding to the loop dial information continuously sent from the telephone can be sent to the trunk line, various services used for transmitting the PB damage signal data can be received by the rotary dial telephone.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of an exchange system equipped with a PB sender. 1 is a subscriber A, 2 is a subscriber circuit, 3 is a call control device, 4 is a switch network, 5 is a tone trunk, 6 is a trunk trunk, 7 is a trunk line, and 8 is a PB sender. Patent applicant: Mitsubishi Electric Corporation (2 others) - Figure 1

Claims (1)

[Claims] In a PB sender connection system in which a telephone exchange having a PB sender is configured to allow a rotary dial subscriber to select a trunk line in a PB dial signal selection method, at least one of off-hook and special dialing by a rotary dial subscriber is detected. A PB sender connection method, characterized in that a control means for connecting the PB sender is provided, and the PB sender connection method is configured to enable transmission of a PB dial method signal.