JP2000165918A - Telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically adjust the call level of a line call without key input from an extension telephones by means of a user even if a line loss is large. SOLUTION: A level detection part 22 detects the signal level of a known signal sent from a pubic line before a call starts. A reference value is previously stored in a reference data part 12. The level of the known signal detected by the level detection part 22 is compared with the reference value stored in the reference data part 12 by a comparison part 13. A line call level adjusting part 6 automatically adjusts the call level of the public line by a comparison result in the comparison part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device capable of adjusting a communication level with a public line.

[0002]

2. Description of the Related Art FIG. 3 shows a configuration example of a conventional key telephone apparatus. In the key telephone apparatus shown in FIG. 1, a plurality of extension telephones 2-1 to 2-n are connected to a key telephone main apparatus 1. The main device 1 is connected to a public line via a line interface 3, and is connected to an extension telephone 2 via an extension interface 4. The internal operation of main device 1 is controlled by control unit 5.

The main unit 1 has a line communication level adjustment unit 6 for adjusting the communication level (transmitting and receiving) when the extension telephone 2 makes a call with the public line, and the extension telephone 2 holds a call with the public line. When a call is made, the hold tone sending unit 7 sends a hold tone to the public line, and when the extension telephone 2 of the main device 1 does not respond, a message indicating that the user is absent is sent by proxy. A message sending unit 8 for sending to a public line, a system for sending an interrupt sound for notifying the public line of the interruption when another extension telephone interrupts during a call between the public line and the extension telephone 2 A tone transmitting section 9 is provided.

[0004] The operation of the key telephone apparatus configured as described above will be described.

When the extension unit 2 and the public line are talking via the line interface 3 and the extension interface 4 by the control unit 5, the control unit 5 uses the key setting from the extension telephone 2.
, The setting contents regarding the communication level of the line communication level adjusting unit 6 are changed. The caller can increase the call level by setting a key from the extension telephone 2. Further, when a call with the public line is put on hold at the extension telephone 2, the control unit 5 controls the hold sound sending unit 7 to send a hold sound to the public line. Further, when there is an incoming call from the public line to main device 1 and no extension telephone 2 answers, control unit 5 controls message sending unit 8 to send a message notifying that the responder is absent to the public line. Send out. Also, when another extension telephone 2 interrupts during a call between the public line and the extension telephone 2, an interruption for notifying the public line of an interruption from the system tone transmitting unit 1099 under the control of the control unit 5. Send the sound to the public line.

In the above-mentioned button telephone apparatus, a speaker can adjust a communication level during a call with a public line by key input, and also sends a hold sound, a message sound, and an interruption sound to the public line.

[0007]

However, in the case of the above key telephone apparatus, when the distance from the station is long, the line loss of the public line is large, and the level of the line communication is small, the user is required to increase it. Must make a key input from the extension telephone 2 to change the contents of the line communication level adjustment unit 6, which is very troublesome and can be determined only after a call has been made. There was a problem that the voice was so low that it was difficult to hear. Similarly, the level of the hold tone sent to the public line, the absence message level notifying the absence, and the system tone level notifying the interruption are also fixed levels in the system. There was a problem.

The present invention has been made in view of the above circumstances, and automatically adjusts the call level of a line call without the user having to input a key from an extension telephone even when the line loss is large. It is an object of the present invention to provide a telephone device which can be operated with improved operability.

Further, the present invention provides a telephone device capable of automatically adjusting the level of a hold tone, an absence message notifying of absence, and a system tone for notifying interruption to a public line. The purpose is to provide.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention detects the level of a known signal sent from a public line before the line is established, and if the level of the known signal drops, the public Automatically increase the volume of call sound, hold sound, message sound, interrupt sound, etc. sent to the line.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first aspect of the present invention relates to a level detecting means for detecting a signal level of a known signal transmitted from a public line before the start of a call, a reference data section in which a reference value is stored in advance. Comparing means for comparing the level of a known signal detected by the detecting means with a reference value stored in the reference data portion; and a line communication level for automatically adjusting a communication level of a public line based on a result of the comparison by the comparing means. A configuration including an adjustment unit is adopted.

According to this configuration, the communication level of the public line is automatically adjusted in accordance with the signal level of the known signal sent from the public line before the start of the telephone call. It is possible to automatically adjust the call level of the line call without performing key input from the user, thereby improving operability.

According to a second aspect of the present invention, in the first aspect, the hold tone for automatically adjusting the level of the hold tone transmitted to the public line based on the comparison result by the comparing means when the public line call is held. A configuration including a line transmission level adjusting unit is employed.

According to this configuration, the level of the hold tone transmitted to the public line is automatically adjusted in accordance with the signal level of the known signal transmitted from the public line before the start of a call. However, the user can automatically adjust the hold tone without performing key input from the extension telephone, thereby improving operability.

According to a third aspect of the present invention, in the first or second aspect, at the time of response for sending a message on behalf of the first or second aspect, the message sound to be sent to the public line is automatically adjusted based on the result of comparison by the comparing means. And a message line sending level adjusting unit for controlling the transmission.

According to this configuration, the tone of a message for transmitting a message indicating absence, etc. to the public line is automatically adjusted according to the signal level of the known signal sent from the public line before the start of the call. Even if the loss is large, the user can automatically adjust the message sound without performing key input from the extension telephone, thereby improving operability.

According to a fourth aspect of the present invention, in the first to third aspects, when an event occurred during a call is reported by a system tone, the event is transmitted to a public line based on a result of comparison by the comparing means. And a system tone line transmission level adjusting unit for automatically adjusting the transmission level of various system tones.

According to this configuration, the system tone to be transmitted to the public line is automatically adjusted according to the signal level of the known signal transmitted from the public line before the start of a call, so that the system tone can be used even when the line loss is large. The user can automatically adjust the system tone without performing key input from the extension telephone, thereby improving operability.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the configuration of a key telephone apparatus according to the present embodiment. Parts having the same functions as those of the key telephone apparatus shown in FIG. 3 are denoted by the same reference numerals.

In the key telephone apparatus according to the present embodiment, a plurality of extension telephones 2-1 to 2-n can be connected to a public line via a main unit 10. The main device 10
A line interface 3 connected to a public line, a control unit 5 for controlling the entire system, an extension interface 4 connected to the extension telephone 2, and a call level (transmission and reception) when the extension telephone 2 makes a call with the public line. The line call level adjusting unit 6 to be adjusted, the hold sound sending unit 7 for sending a hold sound to the public line when the extension telephone 2 holds the call with the public line, and the extension telephone 2 on the main device 10 side, A message sending unit 8 for sending a message indicating that the user is absent in response to a non-answering operation to the public line, and interrupting when another extension telephone interrupts during a call between the public line and the extension telephone 2. A system tone transmitting unit 9 for transmitting an interrupt sound for notifying the public line of the fact is provided.

In the present embodiment, a main unit 10 has a caller ID level detector 11 for detecting the level of a caller ID sent from the public line at the time of an incoming call, and a caller ID in which a reference caller ID level is stored in advance. A reference level data section 12 and a caller ID level comparison section 13 for comparing a detection result of the caller ID level detection section 11 with data stored in the caller ID reference level data section 12 are provided. Further, main device 10 includes cola ID level comparing section 1
The hold tone line sending level adjuster 14 adjusts the level of the hold tone sent out to the line based on the comparison result in Step 3, and the level of the message indicating the absence sent out to the line is adjusted based on the comparison result in the caller ID level comparator 13. And a system tone line sending level adjusting unit 16 for adjusting the level of a system tone such as an interrupt notification sound sent out to the line based on the comparison result of the caller ID level comparing unit 13.

The operation of the key telephone apparatus configured as described above will be described with reference to the flowchart of the automatic level adjustment shown in FIG.

When there is an incoming call from the public line (S20), the signal level of the caller ID signal sent from the public line at the time of the incoming call is detected by the caller ID level detecting section 110 (S21). The cola ID level comparison unit 13
The signal level detected by the D level detector 11 and the
A comparison is made with a cola ID level value previously stored as reference data in the D reference data section 12 (S22).

The caller ID reference data of the caller ID reference data section 12 is set to a value at the time of a line loss with an optimum call level. For example, when the line loss is 0 dB-
Set to 10 dBm.

If the result of the comparison by the caller ID comparing section 13 indicates that the caller ID level detected by the caller ID level detecting section 11 is smaller (−14 dbm), the contents of the line communication level adjusting section 6 are controlled by the control section 5. And raise the level for both transmission and reception by +4 dBm before answering the incoming call (S
23). After the level adjustment is completed, an incoming call is answered and a call is started (S25). As a result, the call level after the incoming call response becomes the optimum call level.

In addition, when a call is received, the extension telephone 2
Is suspended, the caller ID comparison unit 13 compares the detected caller ID level with the reference data. If the result of the comparison indicates that the detected caller ID level is lower (−14 dbm), the control by the control unit 5 suspends the caller ID level. The contents of the sound line transmission call level adjustment unit 14 are changed, the level is increased by +4 dBm before the incoming call is answered, and the hold sound in the call after the call is received is sent from the hold sound sending unit 7 (S25).

Also, in a call at the time of an incoming call, when no user responds, the message sending section 8 makes a proxy response,
A message notifying the absence is sent to the line. At this time, the caller ID signal sent at the time of the incoming call is detected by the caller ID level detection unit 11, and the result of the detection by the caller ID level detection unit 11 by the caller ID comparison unit 13 and stored in the caller ID reference data unit 12 in advance Is compared with the reference cola ID level value. As a result of this comparison, if the detected caller ID level is lower (−14 dbm), the contents of the message line transmission call level adjustment unit 15 are changed under the control of the control unit 5, and the level is increased by +4 dBm before the incoming call response, and the message A message is sent from the sending unit 8.

When a third party's extension telephone 2 interrupts the call during a call at the time of the incoming call, the system tone transmitting section 9 transmits a call interrupt tone to the line talker to the line. .

At this time, the caller I sent at the time of the incoming call
The D signal is detected by the caller ID level detector 11, the result detected by the caller ID level detector 11 by the caller ID comparator 13, and a reference caller ID level value previously stored in the caller ID reference data unit 12. Compare.
As a result of this comparison, if the detected caller ID level is lower (−14 dbm), the contents of the system tone line transmission call level adjustment section 16 are changed under the control of the control section 5, and the level is increased by +4 dBm before the incoming call is answered. The system tone line sending section 9 sends a call interruption notification sound.
Further, a case where the level is lowered will be described below. If the result of the comparison by the cola ID comparison unit 13 indicates that the cola ID level detected by the cola ID level detection unit 11 is higher (−6 dbm), the content of the line communication level adjustment unit 6 is changed under the control of the control unit 5. Before answering the incoming call, the level of both transmission and reception is reduced by +4 dBm (S24). After the level adjustment is completed, an incoming call is answered and a call is started (S25). As a result, the call level after the incoming call response becomes the optimum call level.

In addition, the extension telephone 2
Is suspended, the caller ID comparison unit 13 compares the detected caller ID level with the reference data. If the result of the comparison indicates that the detected caller ID level is higher (−6 dbm), the control of the control unit 5 suspends the caller ID level. The contents of the sound line transmission call level adjustment unit 14 are changed, the level is reduced by +4 dBm before the incoming call is answered, and the hold sound in the call after the call is received is sent from the hold sound sending unit 7 (S25).

Also, in a call at the time of an incoming call, when no user responds, the message sending section 8 makes a proxy response,
A message notifying the absence is sent to the line. At this time, the caller ID signal sent at the time of the incoming call is detected by the caller ID level detection unit 11, and the result of the detection by the caller ID level detection unit 11 by the caller ID comparison unit 13 and stored in the caller ID reference data unit 12 in advance Is compared with the reference cola ID level value. As a result of this comparison, if the detected caller ID level is higher (-6 dbm), the contents of the message line transmission call level adjustment section 15 are changed under the control of the control section 5, and the level is reduced by +4 dBm before the incoming call is answered, and the message A message is sent from the sending unit 8.

When a third party's extension telephone 2 interrupts the call during a call at the time of an incoming call, the system tone transmitting section 9 transmits a call interruption tone to the line talker to the line. .

At this time, the cola I sent at the time of the incoming call
The D signal is detected by the caller ID level detector 11, the result detected by the caller ID level detector 11 by the caller ID comparator 13, and a reference caller ID level value previously stored in the caller ID reference data unit 12. Compare.
As a result of this comparison, if the detected caller ID level is higher (−6 dbm), the contents of the system tone line transmission call level adjuster 16 are changed under the control of the controller 5,
Before answering the incoming call, the level is lowered by +4 dBm, and a call interruption notification sound is transmitted from the system tone line transmitting section 9.

As described above, according to this embodiment, the signal level of the caller ID is detected at the time of an incoming call and compared with the reference data stored in advance. Since the control unit 6 is controlled to raise the call level and decrease the call level when the call level is large, the call level can be automatically raised or lowered before the start of the call even if there is a change in the call level due to a line loss.

According to the present embodiment, when the extension telephone 2 is put on hold during a call at the time of an incoming call, the signal level of the caller ID detected at the time of the incoming call is compared with reference data stored in advance, and the caller ID of the caller ID is compared. When the signal level is lower, the hold tone line transmission level adjusting unit 14 is controlled to increase the hold tone level, and when the signal level is higher, the hold tone level is lowered. Can be raised automatically.

Further, according to the present embodiment, in a call at the time of an incoming call, when no user responds, message sending section 8 makes a proxy response and sends a message indicating that the user is absent to the line. Sometimes, the signal level of the caller ID detected at the time of the incoming call is compared with reference data stored in advance, and if the signal level of the caller ID is smaller, the message line transmission level adjusting unit 15 is controlled to increase the message level. In this case, when the level is large, the message tone can be automatically raised even if there is a level change due to a line loss.

Further, according to the present embodiment, when a third party's extension telephone 2 interrupts the call during a call at the time of an incoming call, the system tone transmitting section 9 transmits a call interrupt sound to the line talker. Is transmitted to the line, the signal level of the caller ID detected at the time of the incoming call is compared with reference data stored in advance, and if the signal level of the caller ID is lower, the system tone line transmission level adjuster 16 Is controlled to raise the system tone level, and if the level is large, the system tone level is lowered. Therefore, even if there is a level change due to line loss, the system tone can be automatically raised.

[0039]

As described above in detail, according to the present invention, the level of a known signal sent from a public line when an incoming call is received is compared with a preset reference value, and the difference is automatically used for line communication. Since the level is adjusted, an appropriate call level can be automatically set without any key input from the extension telephone, and the call can be started at the optimum call level from the start of the call after answering.

Similarly, the hold tone sent to the line, the message indicating absence, and the call interruption sound for notifying the call interruption can be automatically adjusted, so that the operability can be improved and a comfortable call can be realized. it can.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a key telephone device according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining an operation of automatic level adjustment in the embodiment.

FIG. 3 is a configuration diagram of a conventional key telephone device.

[Explanation of symbols]

 2-1 to 2-n extension telephone 3 line interface 4 extension interface 5 control unit 6 line communication level adjustment unit 7 hold sound transmission unit 8 message transmission unit 9 system tone transmission unit 11 caller ID level detection unit 12 caller ID reference data unit 13 Caller ID level comparison unit 14 Hold tone line transmission level adjustment unit 15 Message line transmission level adjustment unit 16 System tone line transmission level adjustment unit

Claims (4)

[Claims] 1. A level detecting means for detecting a signal level of a known signal transmitted from a public line before starting a telephone call, a reference data section in which a reference value is stored in advance, and a known signal detected by said detecting means. A telephone device comprising: a comparing unit that compares a level with a reference value stored in the reference data unit; and a line communication level adjusting unit that automatically adjusts a communication level of a public line based on a result of the comparison. 2. The apparatus according to claim 1, further comprising a hold tone line transmission level adjusting unit for automatically adjusting the level of the hold tone sent to the public line based on the result of the comparison by the comparing means when the public line call is held. Telephone equipment. 3. A response for sending a message on behalf of
3. The telephone device according to claim 1, further comprising a message line sending level adjusting unit for automatically adjusting a message level sent to a public line based on a result of the comparison by the comparing unit. 4. A system tone line transmission level for automatically adjusting the transmission level of various system tones to be transmitted to a public line based on the result of comparison by the comparing means when an event occurred during a call is notified by a system tone. The telephone device according to any one of claims 1 to 3, further comprising an adjusting unit.