JPH04208791A - Communication equipment - Google Patents

Abstract

PURPOSE:To shorten a time-out time by variably setting up a response time-out time in accordance with a line connection time required up to termination at a terminating communication equipment based upon the sort of an originating dialing number. CONSTITUTION:When the communicating equipment is connected to the extension of a private branch exchange(PBX), a CPU reads out the head code 'OP' when a dialing number is set up to e.g. 'OP12-3456' (P indicates a pause of about 1sec), decides transmission from the PBX extension, sets up the response timer setting time to e.g. 40sec. In the case of NO, the setting time of a response timer is set up similarly to a convensional timer. Namely whether a call is to be passed through the PBX extension or not is discriminated by the transmission number, and in the case of directly connecting a call to the line, the setting time of the response timer is shortened and a call passing the PBX is set up to a long timer value. In the case of transmitting a call to another center due to a busy center line, a useless waiting time can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device that transmits data in response to a human power request for transmission.

[Conventional technology]

A conventional device of this type is shown in FIG. In the figure, (1) is the CPU, (2) is the call request input, (3) is the relay for line connection and dialing, and (4)
shows a response detection circuit consisting of a diode (5) and a photocoupler (6), and a communication device equipped with these structures operates as follows.

The operation will be explained below according to the flowchart shown in FIG. First, when the CPU (1) accepts the on-power request for transmission (2), it turns on the relay D (3) and closes the contact (3).
Close a) and connect the telephone line (531°532)
. At this time, assuming that current is flowing in the telephone line from L1 to L1, the diode (5) of the response detection circuit (4) is on and the odocobra (6) is off.

Thereafter, in order to dial the destination dial number of CPIJ (1), for example 12-3456, a signal corresponding to this is sent to the line by turning relay D (3) on and off (S33). At this time, a built-in response timeout detection timer To (for example, 30 seconds) is started (534, 535). When the destination communication device responds to the call, a current flows in the telephone line from Ll to Ll (that is, the polarity is reversed), so the diode (5) of the response detection circuit (4) is turned off and the photocoupler ( 6)
turns on.

Until the response timeout detection timer times out,
When the CPU (1) detects that the photocoupler (6) is turned on (S36), data is transmitted between the communication devices, and then relay D (3) is turned off to disconnect the line (S36.S38゜5).
39).

Next, if the photocoupler (6) does not turn on even if the response timeout detection timer times out, relay D (3)
and disconnects the line (S37, 539).

(Problems to be Solved by the Invention) Conventional communication devices are configured as described above, so when connecting the communication device to the extension of a private branch exchange (hereinafter referred to as PBX) installed in a building, , Since the time required for the PBX is added to the line connection time (the time from when the communication device completes dialing until the call is received on the line of the center side communication device), the overall line connection time becomes longer. It is necessary to increase the timeout period (e.g. 30 seconds - 40 seconds).However, usually when timeout occurs,
For example, in the case of reporting to another destination, it is not preferable to lengthen the timeout period.

In addition, Japanese Patent Application Laid-Open No. 63-40440 discloses that by specifying a group using the upper digits of the dial and specifying an individual using the lower digits of an automatic switchboard, calls can be made as needed by simply remembering one extension number. Although the technology has been disclosed, there is no disclosure of any solution to the above-mentioned increase in timeout time during connection.

This invention was made in view of the above points,
It is an object of the present invention to provide a communication device that can set a response timeout time to a value suitable for the line connection time of a destination.

(Means for Solving the Problems) A communication device according to the present invention is a communication device that transmits data via a telephone line, and the line connection time until the call arrives at the destination communication device depending on the type of dial number of the destination. The system is equipped with a control means for variably setting a response timeout time depending on the situation.

[Effect]

In this invention, the response timeout time is variably set by the control means depending on the type of dialed number of the destination.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. The communication device in this embodiment employs the same configuration as that in FIG. 1. However, CPII (
1) operates according to the flowchart shown in FIG. That is, as in the conventional example, the CPU (1) starts the outgoing operation after establishing a line connection, but at this time, if the dial number is, for example, 12-3455, the CPU (1) operates exactly the same as in the conventional example ( 521-523). Next, this device
If connected to the BX extension, the note and CPLI (1) whose dial number is set to, for example, r 0P12-3456 J (P indicates a pause of about 1 second),
Reads the first rOPJ (520), determines that the call is from a PBX extension, and sets the response timer setting time to TO+T.
For example, set it to 40 seconds 524) (In addition, if NO in step 520, the set time of the response timer is set to To as in the conventional example (S24a)).The following processing is similar to that in the conventional example.

Note that this invention can be implemented according to the following embodiments.

1) Although the response of the center side communication device is detected by the polarity reversal of the telephone line, it may be detected by detecting a response signal (for example, PB: push button signal) from the center side communication device.

2) The presence or absence of a PBX may be set using a switch, etc.

(Effects of the Invention) As described above, according to the present invention, whether or not to use a PBX extension can be determined based on the calling number by shortening the setting time of the response timer when connecting directly to the line, and when connecting via a PBX By setting a long response timer, you can eliminate unnecessary waiting time when sending an alert to another center when the center line is busy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a communication device, and FIGS. 2 and 3 are operational flowcharts of a CPU (1) in an embodiment of the present invention and a conventional example. (1) is the CPU, (2) is the outgoing request human power, (3)
is a relay for line connection and dialing, (4) is a relay for dialing.
a response detection circuit consisting of a photocoupler (5) and a photocoupler (6);
Ll and L2 are telephone lines.

Claims (1)

[Claims] In a communication device that transmits data via a telephone line,
1. A communication device comprising a control means for variably setting a response timeout time in accordance with a line connection time until a call arrives at a destination communication device depending on the type of dial number of the destination.