JPS62242459A - Communication control equipment - Google Patents

Abstract

PURPOSE:To rapidly detect the state of a terminating side at the start of automatic calling by monitoring sound on a communication line by communication control equipment connected between a personal computer and the communication line. CONSTITUTION:When a calling instruction is generated from the personal computer 8, a selecting signal is sent to the communication line 9 and the sound on the line 9 is monitored by a speaker 7. An operator listens the sound from the speaker 7 and decides the terminating side is busy, the operator outputs a call stop commond. Receiving the command, the personal computer communication control equipment 1 stops a calling body. Thus, the state of the terminating side can be rapidly detected at the start of automatic calling.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication control device provided between a personal computer and a communication line.

[Prior Art] A conventional personal computer (hereinafter referred to as "personal computer") communication control device monitors polarity reversal within a timer period of 50 seconds or less while waiting for an automatic call. This is because if there is a polarity reversal within the timer time, it is assumed that the incoming call has been accepted, and conversely, if the timer times out, it is determined that the connection is not possible.

Therefore, if the other party is busy, a timeout occurs and it is determined that connection is not possible. but,
There is a problem in that it takes a long time of about 50 seconds to determine whether the connection is impossible, and the timer time is wasted.

Furthermore, even when the other party is not a personal computer control device, the calling operation continues until the timeout expires, causing a problem in that the timer time is wasted.

[Object of the Invention] The present invention has been made by focusing on the problems of the above-mentioned conventional example, and an object of the present invention is to provide a communication control device that can quickly know the status f5 of the other party when starting an automatic call. This is the first objective.

[Example of Part II] FIG. 1 is a block diagram showing an embodiment of the present invention.

Computer communication 0 control device i! Il is connected to the personal computer 8 via the R3232C interface section 2, and
It is connected to a communication line 9 via an NCU (JFII control unit) 6.

The CPtJ4 controls communication between the personal computer 8 and the communication line 9 using firmware stored in the ROM 3, and operates the modulation/demodulation section 5,
The call sequence is started via the NCU 6.

Further, the speaker 7 monitors the sound on the communication line 9.

Next, the operation of the embodiment described below will be explained.

FIG. 2 is a flowchart showing the operation of the personal computer communication control device 1 in the embodiment described above.

First, when a calling command is received from the personal computer 8, a selection signal is sent to the communication line 9 (si).After this, the speaker 7 monitors the sound on the communication @ line 9. Then, set a timer within 50 seconds (S2), and if there is a polarity reversal (S3).
), then move on to the modem procedure (33a).

If there is no polarity reversal (33), the operator determines the state of the other party based on the sound from the speaker 7, and monitors the caller in order to send a correct command to the PC communication control device 1. In other words, if the operator hears the sound from the speaker 7 and determines that the other party is busy, the operator issues a calling IL command, and if the PC communication control bag 711 receives this calling stop command, then (S4), the personal computer communication control device 1 initiates the calling operation.

On the other hand, if the call abort command is not sent, the timer continues to be monitored and when the timer expires (SS
), the calling operation is stopped and polarity reversal is determined until a timeout occurs (S3).

FIG. 3 is a flowchart showing the operations performed by the operator in the above embodiment.

First, a calling command is sent to the other party's personal computer communication control device (Sa).Next, when a busy tone is detected from the sound of the speaker 7, a calling stop command is sent (S9), and the process returns to the initial state.

On the other hand, if no busy tone is detected in 57 (
S7), determine whether or not the other party is in manual mode from the sound of speaker 7.S8), if it is not manual mode, that is, automatic mode, wait for connection; conversely, if it is manual mode, Switch to manual mode from the device (S 1
0).

In this way, the PC communication control device l can monitor the sound on the line 9, so if the other party is busy when making an automatic call, it can immediately cancel the call operation, thereby eliminating unnecessary calls. No time is wasted.

Furthermore, if it is determined based on the monitor sound from the speaker 7 that the other party is using manual mode, the mode can be immediately switched to manual mode, so there is no time wasted.

[Effects of the Invention] According to the present invention, there is an effect that the state of the other party can be quickly known when starting an automatic call.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the personal computer communication control device in the above embodiment. FIG. 3 is a flowchart showing the operations of the operator in the above embodiment. l...PC communication control device, 3...ROM. 4...CPU. 7...Speaker. Patent applicant Canon Co., Ltd. Agent Arata Yokubo - Figure 2

Claims (1)

[Claims] A communication control device provided between a personal computer and a communication line, characterized in that the sound on the communication line is monitored by a speaker.