JP3757769B2 - Button telephone equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a button telephone apparatus, and more particularly to a button telephone apparatus that accommodates at least one ISDN line and includes a plurality of slave units.
[0002]
[Prior art]
In offices, two-family houses, and office-shared houses, a button telephone device that accommodates a plurality of outside lines may be used. Since such a button telephone device usually has a plurality of slave units, a plurality of people can talk at the same time.
[0003]
[Problems to be solved by the invention]
However, if there is only one clerk in the office or the like, it may not be possible to answer even if another call is received during a call. For this reason, there has been a demand for a function for rejecting an incoming call for a call that has been received during a call by a simple operation of an office worker.
[0004]
On the other hand, a facsimile apparatus may be connected to the key telephone apparatus. In such a case, a FAX can be received by the facsimile apparatus even during a call. Therefore, it is necessary not to reject the incoming call by FAX even if the incoming call by telephone is rejected as described above. On the other hand, it is necessary not to reject incoming calls due to calls when sending and receiving fax and personal computer communications.
[0005]
An object of the present invention is to solve such a problem, and an object of the present invention is to provide a button telephone device that can reject a new incoming call that arrives during a call.
Another object of the present invention is to provide a key telephone device that can receive an incoming call and an incoming call other than a call in accordance with the use situation of the outside line, in addition to solving the above-described object.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, a button telephone device according to the present invention is a button telephone device accommodating a telephone line including at least one ISDN line, and a usage state detecting means for detecting a usage state of the telephone line. Incoming call detection means for detecting an incoming call from the ISDN line and when an incoming call from the ISDN line is detected while at least one of the telephone lines is being used, an incoming user busy command is sent to the ISDN line. An incoming call control means for sending out and an external line management means for managing a telephone line divided into a plurality of groups while allowing some external lines to be duplicated are managed, and the incoming call control means manages incoming calls for each group .
[0007]
Moreover, this invention includes the following structures as another aspect. That is, the incoming call control means determines whether the telephone line is used for a call or other than a call, and if an incoming call other than a call arrives while the telephone line is used for a call, the incoming call control means Accept. The incoming call control means determines whether the telephone line is used for a call or other than a call, and if an incoming call is received while the telephone line is used for a purpose other than a call, the incoming call control means Accept .
[0008]
With this configuration, the present invention can reject an incoming call received by another external line while using the telephone line by a simple operation of the user. Further, in the state where the incoming call rejection is realized, it is possible to receive both incoming calls by calls and incoming calls other than calls (for example, FAX, etc.).
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a button telephone apparatus according to the present invention. In the figure, reference numeral 10 denotes a main apparatus connected to a telephone line (hereinafter referred to as an external line) 11 including one or more ISDN lines from the switching network 1, and 20A to 20N are connected to the main apparatus 10 via an extension transmission line 30. Button telephone (hereinafter referred to as a handset).
[0010]
In the main apparatus 10, 12 is an external line I / F unit that terminates and connects the external lines 11 (external lines 11 a to 11 m), and 13 is an internal line I / F unit that accommodates the slave units 20 (20 </ b> A to 20 N) via the internal line 30. , 17 are voice paths (call paths) between the external line I / F unit 12 (that is, the external lines 11a to 11m) and the internal line I / F unit 13 (that is, the slave units 20A to 20N) assigned to different time slots. T switch (time switch) for exchanging and connecting, 14 is a main control unit for controlling the entire apparatus to detect incoming calls, use of external lines, and the like, 15 is assigned to a predetermined time slot of the T switch and is used for recording audio signals A reproducible recording / playback unit 16 is a main storage unit for storing information necessary for control by the main control unit 14.
[0011]
On the other hand, each of the slave units 20 (20A to 20N) has the same configuration, wherein 21 is a transmission I / F unit that performs data transmission with the main apparatus 10 via the extension transmission path 30, and 22 is a transmission I / F. A speech circuit 23 that decodes voice data received by the F unit 21 into a voice signal and outputs it from a receiver or a speaker, encodes a voice signal input from the transmitter, and outputs it to the transmission I / F unit 21. A slave control unit that controls each part of the machine 20, 24 detects operation of various keys such as a hook switch and a dial key, and an operation input unit provided with an incoming call rejection mode set button 24a, and 25 displays various information. A display unit 26 is a memory for storing control information used for processing of the slave unit control unit 23, 27 is a transmitter / receiver, 28 is an amplifier, and 29 is a speaker that amplifies a received signal via the call circuit 22.
[0012]
In the key telephone apparatus configured as described above, when a user operates the operation input unit 24 of the slave unit 20 to perform an outside line transmission operation, the slave unit control unit 23 detects this and transmits the transmission I / F unit. The transmission operation information is transmitted to the main apparatus 10 via 21. When the main control unit 14 of the main apparatus 10 receives the call operation information via the extension I / F unit 30, the main control unit 14 transmits the call operation information to the external line I / F unit 12 to capture the corresponding external line 11. The dial call information is transmitted to the exchange network 1 via the captured outside line 11 and the call path between the captured outside line 11 and the corresponding slave unit 20 is connected by controlling the T switch 17. Thus, the other party is called, and when the other party answers, an outside line outgoing call through the user's handset 20 is performed.
[0013]
On the other hand, when an incoming call arrives from the switching network 1 to the external line 11 by the caller calling the button telephone apparatus, the main control unit 14 of the main apparatus 10 receives the incoming call via the external line I / F unit 12. Is detected, and the incoming call information is transmitted to the slave unit 20 via the extension I / F unit 13 to call the slave unit 20. In response to this call, when the user of the slave unit 20 operates the operation input unit 24 to perform a response operation, the response operation information is transmitted to the main apparatus 10. When receiving the response operation information via the extension I / F unit 30, the main control unit 14 of the main device 10 controls the outside line I / F unit 12 to respond to the incoming call outside line 11 and controls the T switch 17. Then, the call path between the incoming call response outside line 11 and the corresponding handset 20 is connected. As a result, an incoming call answering call through the user's handset 20 is performed.
[0014]
Next, an incoming call rejection operation, which is a feature of the present embodiment, will be described.
[1] When only an outside line for a call exists When only an outside line for a call exists, a called user busy command may be returned for a new incoming call. However, when analog external lines are mixed, the following measures are taken.
FIG. 2 shows a case where one ISDN line is used. FIG. 4 shows a case where analog external lines and ISDN lines are mixed. The ISDN line has a total of three channels, two 64 kbps B channels and one 16 kbps D channel. The B channel is used for communication and facsimile communication, and the D channel is used for sending and receiving various control signals such as calling. . Therefore, one ISDN line has a function equivalent to two call outside lines, and can make a call for two outside lines at the same time, and can perform FAX transmission / reception and personal computer communication at the same time.
[0015]
First, FIG. 2 shows two B channels L11 and L12 constituting one ISDN line, a call path formed in the B channel L11, and a called user busy command passing through the B channel L12. That is, if a call is received on the other B channel L12 while a call is being made on the B channel L11, the call can be rejected by returning a called user busy command. On the other hand, in FIG. 4 , since analog external lines are mixed, as shown in FIG. 4A, during a call on the analog external line L21, the two B channels L22 and L23 of the other ISDN lines are connected. When there is an incoming call, the incoming call is rejected by returning a called user busy command. Also, as shown in FIG. 5B, if a call is received on the remaining B channel L23 or the analog outside line L21 while a call is being made on the B channel L22, the call is received to the B channel L23. Return user busy command and reject incoming call. However, for the analog outside line L21, the incoming call cannot be returned under the control of the key telephone apparatus, and therefore the incoming call is accepted as it is. Therefore, when there is an incoming call on the analog outside line L21, the ringtone of the handset 20 is sounded.
[0016]
FIG. 6 shows a processing procedure when there is only an outside line for calls as shown in FIGS . The following processing is performed by the main control unit 14 shown in FIG. First, the user presses the button 24a of the slave unit to set the incoming call rejection mode (step 101). Thereafter, if there is an ISDN incoming call, the main control unit 14 determines the state of each external line connected to the main apparatus 10 (steps 102 and 103), and if all the external lines are empty, performs an ISDN incoming call process (that is, an incoming call). (Step 107).
[0017]
On the other hand, when the other external line is receiving, making a call using the other external line, or calling the other external line, the incoming call cannot be answered anymore, and the incoming call is made busy (step 104). If an analog incoming call is received instead of an ISDN incoming call in step 102 (step 105), normal incoming call processing is performed (step 106). As described above, in the case of an analog incoming call, since the called user busy command cannot be returned, the incoming call is accepted and a ring tone is sounded in the slave unit.
[0018]
[2] When there is a common outside line between tenants
FIG. 3 shows a case where one ISDN line is shared by tenants 1 and 2. As shown in the figure, each of tenants 1 and 2 has an ISDN line (B channels L31, L32, L51, and L52) individually for each outside line, and one ISDN line (B channels L41 and L42) is connected to tenant 1, respectively. 2 shared. Therefore, for example, when a call is received on the B channel L31 of the tenant 1 and another incoming line (B channel L32, L41) is received, a called user busy command is sent to the B channels L31, L41. Reject the incoming call by returning it. As a result, the tenant 1 does not receive an incoming call on another outside line during a call on the B channel L31. However, since the B channels L41 and L42 are common external lines, the following processing is performed.
[0019]
FIG. 7 shows a processing procedure when tenants 1 and 2 share one external line. First, it is assumed that the incoming call rejection mode is set by the user in both the tenants 1 and 2 (step 201). Thereafter, there is an ISDN incoming call (step 202), and when this incoming call is not on the common outside line, the incoming call processing is performed in each tenant (step 208). Therefore, each tenant accepts an incoming call based on the processing procedure of FIG.
[0020]
On the other hand, when the incoming call comes to the common outside line, if the tenant 1 can accept the incoming call, the tenant 1 performs incoming call processing (steps 204 and 205). Furthermore, if the tenant 2 can receive a call, the incoming call process is also performed in the tenant 2 (steps 206 and 207). However, if the incoming call cannot be received by the tenant 2, red is lit on the external line lamp (not shown) of the tenant 2 attached to the handset 20 of FIG. 1 (step 213). In step 204, if the incoming call cannot be received by the tenant 1, it is determined whether the incoming call can be accepted by the tenant 2. If not, the incoming call is busy for both the tenants 1 and 2 (step 212). If the incoming call can be received by the tenant 2, the external line lamp of the tenant 1 is lit red (step 210), and the incoming call process is executed by the tenant 2 (step 211). The management of telephone numbers assigned to each tenant is performed by the main control unit 14 in the main device 10, and the installation information used for management is stored in the main storage unit 16 or a non-illustrated non-volatile memory. ing.
[0021]
[3] When there are both external telephone lines and external FAX lines
FIG. 5 shows a case where a telephone outside line and a FAX outside line coexist. As shown in FIG. 6A, when a call is made on one B channel L61 and a call is received by FAX on the other B channel L62, the facsimile machine can call the FAX even if the call is being made. In this case, the incoming call is accepted without returning the called user busy command. The incoming call by call or the incoming call by FAX can be identified by using terminal information sent from the transmission source facsimile apparatus at the time of the incoming call, dial-in or i-number assigned as the FAX number, or the like.
[0022]
FIG. 8 shows a processing procedure in the case where both a call outside line and a FAX outside line coexist. First, the incoming call rejection mode is set (step 301). Thereafter, when there is an ISDN incoming call (step 302), the main control unit 14 determines whether this incoming call is an incoming call with a FAX number (step 303). (Step 306). If not, the state of the outside line is checked (step 304). If all outside lines are empty, the ISDN incoming call processing is performed (step 305), the other outside line is receiving, the other outside line is calling, or the other outside line is talking. In this case, the incoming call is busy (step 307). As a result, a new incoming call that arrives during a call can be rejected, and when an incoming call is received by FAX, it can be accepted without being rejected. During use of FAX, personal computer communication, etc., both of these uses and calls can be performed. Therefore, it is preferable to accept incoming calls even if the incoming call rejection mode is set.
[0023]
【The invention's effect】
As described above, according to the present invention, the incoming call rejection can be set by a simple operation of the user, so that a ringtone does not sound even when a new call is received during a call. Therefore, there is an effect that it is not necessary to answer each incoming call.
In addition, even when a call is in progress, an incoming call is accepted in the case of an incoming call other than a call. Therefore, FAX or the like can be received with the incoming call rejection mode set. Therefore, it is possible to appropriately coexist incoming calls other than calls and incoming calls other than calls in accordance with the usage conditions of external lines.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a schematic diagram for explaining a processing procedure in one ISDN line.
FIG. 3 is a schematic diagram for explaining a processing procedure when a plurality of tenants have a common outside line.
FIG. 4 is a schematic diagram for explaining a processing procedure when analog external lines and ISDN lines coexist.
FIG. 5 is a schematic diagram for explaining a processing procedure in a case where a telephone outside line and a FAX outside line coexist.
FIG. 6 is a flowchart showing a processing procedure when only an outside line for a call exists.
FIG. 7 is a flowchart showing a processing procedure when a common outside line exists between tenants.
FIG. 8 is a flowchart showing a processing procedure in the case where both a call outside line and a FAX outside line coexist.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Switching network, 10 ... Main apparatus, 11 ... Outside line, 12 ... Outside line interface (I / F) part, 13 ... Extension line interface (I / F) part, 14 ... Main control part, 15 ... Recording / reproducing part, 16 ... Main storage unit, 17 ... T switch, 20A to 20N ... button telephone (slave unit), 21 ... transmission interface (I / F) unit, 22 ... call circuit, 23 ... slave unit control unit, 24 ... operation input unit, 24a ... Call rejection mode set button, 25 ... Display, 26 ... Memory, 27 ... Handset, 28 ... Amplifier, 29 ... Speaker.

Claims (3)

In a button telephone apparatus accommodating a telephone line including at least one ISDN line,
Use state detecting means for detecting the use state of the telephone line;
An incoming call detection means for detecting an incoming call from an ISDN line;
An incoming call control means for sending an incoming user busy command to the ISDN line when an incoming call from the ISDN line is detected while using at least one of the telephone lines;
An outside line managing means for managing the telephone line separately so as to belong to at least one of a plurality of groups ;
The button telephone apparatus, wherein the incoming call control means manages incoming calls for each group. The button telephone apparatus according to claim 1, wherein
The incoming call control means determines whether the telephone line is used for a call or other than a call, and accepts an incoming call when an incoming call other than a call arrives while the telephone line is used for a call Key phone device characterized by. The button telephone apparatus according to claim 1, wherein
The incoming call control means determines whether the telephone line is used for a call or other than a call, and accepts an incoming call when a call arrives while the telephone line is used for a purpose other than a call Key phone device characterized by.

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