JPS59103458A - Non-ringing incoming call control system with message function - Google Patents

Abstract

PURPOSE:To start automatically an automatic answering telephone function if the operator dose not respond even after a prescribed time is elapsed after the notice of receiving by notifying simultaneously a code specific to data communication such as ENQ signal or the like, and discriminating whether the incoming call is a data incoming call or a telephone incoming call. CONSTITUTION:After a data communication terminal 1 receives an incoming call guide signal CI, when, for example, a transmission code specific to data communication such as ENQ signal or the like is transmitted, the terminal device 1 regards a caller as a data communication device and performs a suitable data processing. When the said code specifie to the data transmission is not transmitted, the device discriminates the caller as a telephone caller, transmits ON- command of a changeover relay 10 to connect a telephone set 2 with a voice reproduction/recording section 12, turning off a relay 4, allowing to switch a line 3 to the telephone set 2. On the other hand, if no off-hook by the operator of the receiving side exists after a prescribed time, it is discriminated as absence and the automatic answering telephone function is operated.

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a line switching control system for automatically receiving a call in a network control device that connects a telephone switching line to a data communication terminal and a telephone set, and particularly relates to a method for controlling line switching at the time of automatic reception of a data call. This invention relates to a silent call control system that satisfies the three functions of normal telephone call reception and answering machine.

Background of the Technology As part of the communication system, telephone exchange lines are used to communicate information between different types of terminals, such as normal telephone communications and other data communication terminals. In particular, with the introduction of data communication terminal-like devices with various functions, line switching of network control equipment that automatically switches the communication line of such terminal equipment, etc. that uses telephone exchange lines to effective as the usage time of offline processing increases. In particular, various network control methods have been considered that satisfy the functions of both automatic data incoming control and normal telephone incoming control.

Conventional technology and problems FIG. 1 shows a block diagram of a conventional network control device.

In the crane diagram, 1 is a data communication terminal, 2 is a telephone back, 3 is a telephone exchange line, 4 is a telephone/data switching relay, 5 is a driver for relay 4, 6 is an incoming call detection circuit, and 7 is an incoming call guidance signal. (CI) generator, 8 manual stratification (M)/automatic termination (A
) is a changeover switch. Further, in the telephone 2, 2-
1 is a hook switch that turns 0FF10N when the handset is turned up/down; 2-2 is a telephone bell ringer; 2-3
indicates the transmitting/receiving and dial oscillation circuit. Further, RlC is a drive signal for the driver 5, and DATA is a data signal.

FIG. 2 α to f are diagrams showing the ON/OFF states of the hook switch 2-1, relay 4, and changeover switch 8 in FIG. 1. In other words, Fig. 2a shows the hook switch 2.
-1 ON hook state, handset placed, 2nd
The figure shows a state in which the hook switch 2-1 is in the OFF hook state and the handset is lifted, and FIG. 2C shows the state in which the relay 4 is in the ON state.
Relay power supply liquid, Figure 2 d shows the relay 4 in the OFF state, the relay power is cut off, 2nd (3) Figure 6 shows the changeover switch 8 in the manual state, and Figure 2f shows the changeover switch 8 in the automatic state It is a state diagram which shows each.

In Fig. 1, the changeover switch 8 is set to the automatic receiving side (,4
), when data is received from another terminal or center, the incoming signal is detected by the incoming call detection circuit 6, and the data is sent to the telephone exchange line 3 by the generation of the incoming call guidance signal CI. By switching to the communication terminal 1 side and sending a reception notification to the data communication terminal 1, information can be exchanged. However, in response to an incoming call, the bell is not rung, and the data communication terminal 1 simply enters a standby state due to the generation of the incoming call guidance signal cr, and the call service as a telephone is refused.

Furthermore, if the changeover switch 8 is set to the manual receiving side (Jf), it is naturally impossible to receive data when the user is absent.

Purpose of the Invention The present invention, in order to solve the above-mentioned drawbacks, identifies whether an incoming call is an incoming call or a data incoming call at a data communication terminal, and (4) switches the line to a telephone if the incoming call is incoming, and connects the line to voice, etc. The network control device was improved so that it not only sends out audible sounds but also starts an answering machine function if the receiving operator does not respond to a reception notification within a certain period of time. This will be explained in detail using .

Embodiment of the Invention Figure 5 is an embodiment of the present invention. The same symbols and lines as in FIG. 1 indicate the same parts. 9 is a carrier tone (CS) detection circuit sent from the receiving side; for example, a normal 165
It consists of a circuit that detects the audible sound of 0#π for 35QmsO as a carrier tone CS. 10
1 is an element for switching between the incoming call detection circuit 6 and the audio playback/recording section 12; in this embodiment, an electromagnetic relay (hereinafter referred to as a switching relay) sb; 11 is a drive circuit for the switching element 10; Reference numeral 12 denotes a voice playback/recording unit that provides voice responses to the sender, notifies the operator of incoming calls, and stores messages from the sender. The start/end of voice responses, message recording, etc. is controlled by the control signal VRC from machine 1. 1
Reference numeral 3 denotes a speaker for notifying an incoming call, and for example, it may amplify and output voice response information to the sending side as it is, or it may output synthesized sound using an LSI.

14 indicates O of the hook switch 2-1 by the receiving side operator.
This is a transmission/reception start detection circuit for detecting the FF (handset up) state, which detects 48 DC potentials for power that are constantly supplied on the line and sends a transmission/reception start signal to the data communication terminal 1 side. It sends out rs.

＼ The network switching control, voice response, message recording control, etc. at the time of automatic call reception in FIG. 6 are performed as follows.

(1) The incoming call signal from the telephone exchange line 3 is notified to the incoming call detection circuit 6 via the changeover switch 8, the hook switch 2-1, and the switching relay 10, and the incoming call detection circuit 6 is notified by the generation of the incoming call guidance signal CI. At the same time, the relay 4 is turned on to connect the telephone exchange line 3 to the data communication terminal 1.

(2) The data communication terminal 1 performs the following operations after receiving the incoming call notification by the incoming call guidance signal CI.

(,4) Turn on the power of the data communication terminal: 1 side and put the network control device in standby state.

(B) A carrier tone CS of a specific frequency is sent from the data signal DATA terminal to the IT telephone exchange line to notify that the reception setup is established. Further, the estrus side detects the carrier tone CS using the carrier tone detection circuit 9 and sends transmission start request information (for example, ENQ code @).

A timer is monitored from the time when the carrier tone C5 is sent, and it is checked whether transmission start request information (for example, ENQ code, etc.) is received from the transmitting side within a certain period of time (for example, 1 second).

(D) When transmission start request information is received, the other party is assumed to be a data communication device and performs normal data reception processing.
When the reception is completed, the relay 4 is turned off, the telephone exchange line 3 is connected to the telephone set 2 side, and the power supply on the data communication terminal side is turned off (7) to terminate all operations.

(E) On the other hand, if the transmission start request information does not arrive, it is determined that the calling party is making a telephone call, and the drive signal R2C terminal of the drive circuit 11 of the switching relay 10 is sent to the switching relay 10.
Instruct N to connect the telephone 2 and the audio playback/recording section 12. Furthermore, the drive signal R1C of the driver 5 instructs the relay 4 to be turned off, and the telephone exchange line 3 is switched from the data communication terminal 1 to the telephone 2 side.

(3) After the telephone exchange line 3 is switched to the telephone 2 side by the operation in the previous section (2)-(E), (A) the data communication terminal 1 receives the control signal VRC of the audio playback/recording section 12. Then, command the sender to start a voice response. The response may be a message such as "We are currently calling. Please wait for a while" or an audible sound at a specific frequency. The contents of this response are as follows: Switching relay 10. Hook switch 2-1. The signal is sent to the telephone exchange line 6 via the changeover switch 8 and the like.

(8) (B) At the same time, the data communication terminal 1 also outputs the response contents of (, 4) above to the audio playback/recording unit 12 to the speaker 16 in order to notify the receiving operator of the incoming call. issue an order to do so.

In addition, for this incoming call notification, an unused telephone bell ringer 2-
2 may be used.

The operation of (A(B)) continues until the receiving operator goes off-hook (handset up) or the calling party disconnects the line. )l When 15 seconds have passed after the operation command in (B), the data communication terminal 1 issues an answering machine start command using the control signal VRC, and the voice playback/recording unit 12
Message is received, for example, "Please tell us your name and business," etc., and the voice playback/recording section 12
into recording mode.

This recording state is canceled after the caller's line is disconnected or a certain period of time has elapsed, and the telephone exchange line 3 is disconnected and the switching relay 1
0 OFF and data communication terminal 1. The power to the audio playback/recording unit 12 and the like is turned off to restore the initial state.

By carrying out the switching control described in (1) to (3) above, automatic switching between data reception and telephone reception in the automatic call receiving mode and an answering machine function when the receiving side operator is absent are possible.

In this embodiment, a contact opening/closing mechanism using an electromagnetic relay has been described as an example of the switching element 10, but in the present invention, the drive signal R'l from the data communication terminal
Any element may be used as long as it performs a switching operation in response to C, and is not particularly limited to this embodiment.

As described in detail of the invention, in a network control device set to automatic incoming call connection, incoming call information is checked on the data communication terminal side, and transmission start request information specific to data communication (for example, E
Checks whether the call is an incoming data call or a phone call based on the presence or absence of a NQ code). If the call is an incoming call, the line is switched from the data terminal to the telephone side, a voice response is sent to the calling party, and the operator receives the call. By taking notification measures and switching to an answering machine function that stores the caller's message in the absence of the receiving operator, it satisfies both the functions of automatic data reception control and normal telephone reception. Can configure network control equipment. Therefore, it is possible to construct a terminal device having both a mailbox function and a telephone function using a - line.

[Brief explanation of the drawing]

Figure 1 is a block diagram of the configuration of a conventional network control device, Figure 2 α
~f is a 0N10FF state diagram of the hook switch, relay, and auto/manual changeover switch during reception in FIG. 1, and FIG. 6 is an embodiment of the present invention. 1...Data communication terminal, 2...Telephone, 6...
Telephone exchange line, 4...Telephone/data switching relay, 5
...Relay 4 driver, 6...Incoming call detection circuit, 7
...Call notification signal (CR) generator, 8...Manual call reception (M)/automatic call reception (A) changeover switch, 2-1...
Hook switch, 2-2...Telephone bell ringer, 2-
6... Sending/receiving and dialing circuit, 10... Relay for switching between the incoming call detection circuit and voice response section, 11... Drive circuit for switching relay 10, 12... Audio playback/recording section, 16...S (11) P power, 9...Carrier tone detection circuit, 14...
Transmission/Reception Start Detection Circuit Patent Applicant Nippon Telegraph and Telephone Public Corporation Patent Attorney Gobe Tamamushi (6 others) (12) Figure 2 a b c de
f

Claims (1)

[Scope of Claims] A telephone/data switching relay that switches between a data communication terminal using a telephone exchange line and a normal telephone connected to the telephone exchange line, a driver for the switching relay, an incoming call detection circuit, and an incoming call guide. The network control 11 device, which is equipped with a code generator, a manual/automatic call selection switch, a carrier tone detection circuit sent from the called side, etc., provides a voice response to the sending side and a call reception to the receiving side operator. A voice playback/recording unit having the ability to notify and store messages from a transmitting operator; a switching element for switching between the voice playback/recording unit and an incoming call detection circuit of the network control device; and driving of the switching element. a circuit, and by controlling the switching element from a data transmission terminal board, the audio reproduction/recording section is switched to a recording state and a message from a transmitting operator is recorded. Functional silent incoming call control system.