JP3480908B2 - Recording medium storing key telephone device and main device control program - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to a communication line I
The present invention relates to a button telephone device in which an SDN line is connected to a main device and a plurality of data terminals such as personal computers can be accommodated in an extension digital bus in addition to a telephone.

[0002]

2. Description of the Related Art In a conventional button telephone device, when connecting a plurality of personal computers to an extension line, it is necessary to install a plurality of terminal adapters on the extension line and individually connect each of the terminal adapters to an opposite device of an outside line. Yes, the number of ISDN line B channels for the minimum terminal adapter was required. Also, when connecting multiple PCs with a router, which is an extension terminal, use the Ethern
Connected by et, voice communication such as a telephone and data communication such as a personal computer were realized by using separate wiring lines. In this case, the router has no way of knowing the call origination request information of the telephone, so whether to use the ISDN line 1B channel or 2B channel only depending on the router settings and the data amount of the personal computer connected to the Ethernet. It was decided.

[0003]

Therefore, according to the prior art, in order to efficiently use the outside line when performing data communication from a plurality of personal computers, the terminal adapter is replaced with a router, and the personal computers are further connected. For Ethern
had to wire et.

In addition, MP (Multilink Protoco
l) If there is no free B channel of the ISDN line during communication, even if he wants to make a call from the telephone, he has to wait for the router to finish the data communication.

It is an object of the present invention to provide a key telephone device in which a user who is using a terminal adapter can connect a plurality of personal computers and can efficiently use the B channel of an ISDN line.

Another object of the present invention is to provide a key telephone device for notifying a user that a call can be made when there is no free B channel of an ISDN line during MP communication in a router.

[0007]

In order to achieve such an object, a button telephone device of the present invention is connected to a main device and has a speed conversion function for connecting a personal computer with a serial interface, and an asynchronous / synchronous PPP (Point-). to-P
It has a terminal adapter having a point-to-point protocol conversion function and a router part in the main device which has an address conversion function, a routing function, and a filtering function in the main device. PPP or MP is provided between the terminal adapter and the router part. And the router unit connects to the opposite device of the outside line by PPP or MP, so that one or more PPs of the outside line can be simultaneously sent from one or more terminal adapters.
Data communication is possible by P and MP connections.

Therefore, a user who is using the terminal adapter can connect a plurality of personal computers to the ISDN line B
The channels can be used efficiently, and in order to communicate with one connection of PPP or MP, all that is required is to add a router section to the main device, and the wiring can be shared with the telephone.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, a button telephone apparatus according to an embodiment of the present invention comprises a main apparatus 100, an extension telephone 101 and a terminal adapter 102, and a personal computer 103 is connected to the terminal adapter 102.

The main unit 100 has a line interface 1 for controlling call connection with a communication network, a time switch 2 for switching a communication path, a main unit extension interface 3 for controlling an extension digital bus 104, and an extension telephone. 10
1, a display control unit 4 that controls the display unit 1, an external line usage status monitoring unit 6 that monitors the usage status of the ISDN line, a main main control unit 5 that controls each unit of the main device 100, each interface, and the like, and an external line. External line PPP / MP processing unit 7 that performs PPP and MP processing during communication, and extension PPP / MP processing unit 8 that performs PPP and MP communication with the terminal adapter 102.
And a router function unit 9 for performing a router process such as address translation, routing, and filtering, and a router main control unit 10 for controlling each processing unit of the router unit.
Here, the outside line PPP / MP processing unit 7 and the inside line PPP / MP
The processing unit 8, the router function unit 9, and the router main control unit 10 constitute a router unit 20.

The extension telephone 101 is a terminal extension interface 11 that controls the extension digital bus 104 on the extension terminal side, a codec 12 that codes and decodes a voice signal, and a lamp display unit 14 that displays a lamp of the telephone 101. And terminal extension interface 11 and codec 12
And a telephone main control unit 13 for controlling the lamp display unit 14,
It is composed of the handset 15.

The terminal adapter 102 connects the personal computer 103 with the terminal extension interface 11 for controlling the extension digital bus 104 on the extension terminal side, the PPP / MP processing section 17 for performing asynchronous / synchronous PPP conversion and MP processing. For controlling the serial interface 18, the terminal extension interface 16, the PPP / MP processing unit 17, and the serial interface 18
It is composed of nine.

Table 1 shows an information management table of the outside line usage status monitoring unit 6.

The "ISDN line B channel logical number" is a logical number assigned to the B channel of the external line ISDN. “Used / unused” manages whether the extension terminal or the router unit 20 is currently using the corresponding B channel. The “used terminal” manages which extension terminal or the router unit 20 is using. The "router section PPP / MP communication" manages whether the communication mode is PPP communication or MP communication when the router section 20 uses an outside line.

[0016]

[Table 1] FIG. 2 is a flow chart showing a flow of a channel reduction operation of the router unit 20 of the embodiment of FIG.

When a call is made from the extension telephone 101,
The main main controller 5 detects a call request from the extension telephone 101 (step 201). The main main control unit 5 confirms whether or not there is a free B channel on the outside line by using the outside line usage status monitoring unit 6 (step 202). If there is a free B channel, the main main control unit 5 instructs the line interface 1 to make a call (step 203), and also instructs the extension telephone 101, which has requested the main device extension interface 3, to make a call. (Step 204). further,
The main main control unit 5 instructs the time switch 2 to connect the communication line of the external line and the internal line. When there is no free B channel, the main main control unit 5 confirms whether or not the router unit 20 is in MP communication with the outside line usage status monitoring unit 6 (step 20).
5). If the MP communication is not in progress, the main main control unit 5 instructs the main device extension interface 3 to notify the extension telephone 101 that has issued the call request that the call is disabled (step 2
06), the extension telephone 101 is in a call-disabled state. If the outside line usage monitoring unit 6 can confirm that the router unit 20 is in MP communication, the main main control unit 5 instructs the router main control unit 10 to select 1B of the 2B channels used for MP communication. Request to release the channel (step 207). The router main control unit 10 instructs the outside line PPP / MP processing unit 7 to switch from MP communication (2B channel communication) to PPP communication (1B channel communication) (step 208). The outside line PPP / MP processing unit 7 switches the MP communication to the PPP communication and notifies the router main control unit 10 that the processing is completed (step 209). The router main control unit 10 notifies the main main control unit 5 that the MP communication has been switched to the PPP communication (step 210). The main main controller 5 instructs the line interface 1 to release the unused B channel in the router main controller 10 (steps 211 and 212). Further, the main main control unit 5 instructs the outside line usage status monitoring unit 6 to change the used / unused information of the released B channel to "unused" (step 213). The main main controller 5 instructs the line interface 1 to make a call on the vacant B channel according to the call request from the extension telephone 101 (step 214). Further, the main main control unit 5 is the extension telephone 101
Is instructed to the main device extension interface 3 (step 215). Furthermore, the main main controller 5
Instructs the time switch 2 to connect the communication path between the external line and the internal line, and instructs the external line usage status monitor unit 6 to change the used / unused information to "used" by the extension telephone 101 which has issued the call request ( Step 21) 6.

FIG. 3 is a flow chart showing the flow of the channel increasing operation of the router section 20 of the embodiment of FIG.

When the extension communication is completed by the extension terminals (extension telephone 101, terminal adapter 102) other than the router section 20, the main main control section 5 uses the extension terminal B
The line interface 1 is instructed to release the channel (step 301), and the time switch 2 is instructed to disconnect the communication path between the outside line and the extension line (step 302). Also,
The main main controller 5 instructs the outside line usage status monitor 6 to change the used / unused information of the released outside line B channel to "unused" (step 303). Further, the main main control unit 5 notifies the router main control unit 10 that there is an available outside line B channel (step 304). If the 1B channel communication (PPP communication) is currently being performed, the router main control unit 10 issues a call origination request to the main main control unit 5 (steps 305 and 306). The main main control unit 5 instructs the line interface 1 to make a call (step 307), and also instructs the time switch 2 to connect to the outside line PPP / M of the router unit 20.
The P processing unit 7 side is instructed to connect the external communication path (step 308). Further, the main main control unit 5 sends a B signal sent from the line interface 1 to the outside line usage status monitoring unit 6.
The use / unuse information of the channel is set to “use”, and the router unit 20 is instructed to rewrite the information indicating the MP communication (step 309). The main main controller 5 then notifies the router main controller 10 that the call origination request has been received (step 310). The router main control unit 10 is an outside line PPP / MP
MP communication is performed by the router unit 20 by instructing the processing unit 7 to switch from PPP communication to MP communication (step 311).

FIG. 4 is a flow chart showing a flow of display control performed by the display control unit 4 of the embodiment shown in FIG.

The display control unit 4 obtains the information of the outside line usage status monitoring unit 6 through the main main control unit 5, and the extension telephone 101
Control the lamp display. First, if there are more than 1B channels for the outside line available, it is instructed to display the lamp of the extension telephone set 101 corresponding to the B channel for the outside line in use as "in use" (steps 401 and 402). If there is no external line free B channel, it is confirmed from the information of the external line usage status monitoring unit 6 through the main main control unit 5 whether the router unit 20 is in MP communication (step 403). Router part 2
If 0 is in MP communication, the router unit 20 displays the 1B channel of the 2B channels used in the MP communication as free, and the telephone 10 corresponding to the other B channels.
The lamp 1 is instructed to display "in use" (step 404). If the router unit 20 is not in the MP communication, an instruction is given to display all the lamp indications of the extension telephone set 101 in use (step 405).

The processing of the main main controller 5 shown in FIGS. 2 and 3 and the processing of the display controller 4 shown in FIG.
Alternatively, the program may be recorded as a main device control program in a recording medium such as a (floppy disk), a CD-ROM, an MO (magneto-optical disk), and may be read and executed by the CPU.

[0023]

As described above, the present invention has the following effects.

1) According to the invention of claim 1, a user who is using a terminal adapter connects a plurality of personal computers and ISD
The B channel of the N line can be used efficiently, and in order to communicate with one connection of PPP or MP, it is only necessary to add a router unit to the main device, and the wiring can be shared with the telephone.

2) According to the inventions of claims 2 and 3, the outside line can be efficiently used.

3) In the invention of claim 4, the 1B channel is
The user can immediately know that it is available on the phone.

[Brief description of drawings]

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

FIG. 2 is a flow chart showing a flow of a channel reduction operation of a router section 20 of the embodiment of FIG.

3 is a diagram showing a flow of a channel increasing operation of a router section 20 of the embodiment of FIG.

4 is a flowchart showing a flow of a display control operation performed by the display control unit 4 of the embodiment of FIG.

[Explanation of symbols]

100 main device 101 extension telephone 102 terminal adapter 103 personal computer 104 extension digital bus 20 router part 1 line interface 2 time switch 3 main device extension interface 4 display control part 5 main main control part 6 external line usage monitoring part 7 external line PPP / MP processing Unit 8 Extension PPP / MP processing unit 9 Router function unit 10 Router main control unit 11 Terminal extension interface 12 Codec 13 Telephone main control unit 14 Lamp control unit 15 Handset 16 Terminal extension interface 17 PPP / MP processing unit 18 Serial interface 19 TA main Control units 201 to 217, 301 to 311, 401 to 405
Step

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-187435 (JP, A) JP-A-11-355269 (JP, A) JP-A-11-215125 (JP, A) JP-A-11- 68739 (JP, A) JP-A-6-233077 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04Q 3/58 107 H04M 3/00 H04M 11/00 303

Claims (11)

(57) [Claims] 1. A key telephone device in which an ISDN line is connected to a main unit as a communication line and can accommodate a plurality of extension terminals on an extension digital bus, and the personal computer is connected to the main unit by a serial interface. A terminal adapter having a speed conversion function for connection and an asynchronous / synchronous PPP conversion function, and a router unit in the main device having an address conversion function, a routing function, and a filtering function in the main device, The terminal adapter and the router unit are connected by PPP or MP, and the router unit is connected by PPP or MP to the opposite device of the outside line so that the terminal adapter can simultaneously perform data communication by one PPP or MP connection of the outside line. Button telephone device that can. 2. The router unit is an ISD by MP communication.
When receiving a call request from the extension telephone during N line 2B communication, the main device has a means for releasing 1B channel of 2B channels during MP communication, and the main device requests the released 1B channel. 2. The key telephone apparatus according to claim 1, further comprising means for controlling the extension telephone. 3. The method according to claim 2, further comprising means for using the 1B channel released by the router section, reallocating the 1B channel released by the extension telephone set which has ended the call to the router section, and returning to the MP communication. Button telephone device. 4. The ISDN is used for the router unit by MP communication.
3. The key telephone apparatus according to claim 2, further comprising means for controlling the extension display of the lamp of the extension telephone, which indicates the usage status of the outside line, in the main unit so that the extension telephone can use the 1B channel even if the line 2B channel is being used. . 5. The main unit comprises a line interface for controlling call connection with a communication network, a main unit extension interface for controlling the extension digital bus, and a display control unit for controlling a display unit of an extension telephone. , A time switch for switching the communication path, an external line usage status monitoring unit for monitoring the usage status of the ISDN line, a PPP for external line communication, an external line PPP / MP processing unit for performing MP processing, a PPP for the terminal adapter, An extension PPP / MP processing unit that performs MP communication, a router function unit that performs router processing, and the outside PPP / MP processing unit.
A router section including an MP processing section, the extension PPP / MP processing section, and a router main control section for controlling the router function section;
A main main control unit for controlling each unit in the main unit is provided, wherein the terminal adapter has a terminal extension interface for controlling the extension digital bus, and an asynchronous / synchronous P
A PPP / MP processing unit that performs PP conversion and MP processing;
The apparatus according to claim 1, further comprising a serial interface with a personal computer, the terminal extension interface, the PPP / MP processing unit, and a TA main control unit that controls the serial interface. 6. The main main control unit, when a call operation is made from an extension telephone, detects a call request from the extension telephone, and confirms whether or not there is an empty B channel on the outside line by the outside line usage status monitoring unit. When there is a free B channel, the line interface is instructed to make a call, and the extension telephone that has requested the call to the main unit interface is instructed to be in a calling state.
The outside line usage monitoring unit confirms whether or not the router unit is in MP communication, and if it is not in MP communication, it instructs the extension line interface of the main apparatus to notify the extension telephone that has issued the call request that the call cannot be made. If the MP communication is in progress, the router main control unit is requested to release the 1B channel of the 2B channels used for the MP communication, and the router main control unit switches from the MP communication to the PPP communication. When the notification is received, the line interface is instructed to release the unused B channel in the router main control unit, and the outside line use status monitoring unit is notified of the unused / unused information of the released B channel. Change to "use", and instruct the line interface to make a call according to the call request from the extension telephone for the vacant B channel. The main device extension interface is instructed to be in a calling state, the time switch is instructed to connect a communication path between an outside line and an extension line, and a request for calling an unused B channel is issued to the outside line usage status monitoring unit. Instructing the extension telephone to rewrite the used / unused information, the router main control unit requests the external line PPP / MP processing unit to perform MP communication by the 1B channel release request from the main main control unit. 6. The key telephone device according to claim 5, further comprising: instructing to switch from PPP communication to PPP communication, and notifying the main main control unit of switching from MP communication to PPP communication when the switching is completed. 7. The main main control unit instructs the line interface to release the B channel used by the extension terminal when the extension communication with the extension terminal other than the router unit ends, and instructs the time switch to do so. An instruction is given to disconnect the communication path between the external line and the internal line, and the external line usage status monitoring unit is instructed to change the used / unused information of the released external line B channel to “unused”, and the router main control unit is instructed. If there is a free B channel on the outside line, and if PPP communication is in progress, it receives a call request from the router main control unit and instructs the line interface to send a call. The MP processing unit side is instructed to connect the communication path of the outside line, and the outside line usage status monitoring unit uses the use / unuse information of the B channel transmitted by the line interface as “use”. , The router unit is instructed to rewrite the information indicating that the communication is MP communication, the router main control unit is notified that the transmission request is accepted, and the router main control unit requests the main main control unit to transmit the call. 7. The button telephone device according to claim 5, further comprising a step of instructing the outside line PPP / MP processing section to switch from PPP communication to MP communication when receiving a notification that the call origination request has been accepted from the main main control section. 8. The display control unit obtains the information of the outside line use status monitoring unit through the main main control unit, and if the available outside line B channel is 1B channel or more, the inside line corresponding to the outside line busy B channel. Phone light is "in use"
When there is no free external B channel, it is confirmed whether the router is in MP communication. If it is in MP communication,
The router unit is instructed to display the 1B channel of the 2B channels used in the MP communication as free and to display the lamps of the extension telephones corresponding to the other B channels as "in use". The key telephone device according to claim 6 or 7, which instructs the main control unit of the extension telephone to display all the lamps on the telephone as "in use" when the MP communication is not performed. 9. A recording medium in which processing performed by the main main control unit of the key telephone device according to claim 5 is recorded, and a procedure for detecting a call request from the extension telephone when a call operation is made from the extension telephone. , A procedure for checking whether or not there is a free B channel on the outside line by the outside line usage monitoring unit, a procedure for instructing the line interface to make a call if there is a free B channel, and a call to the main device interface. The procedure for instructing the requested extension telephone to be in a calling state, the procedure for confirming whether the router section is in MP communication by the outside line usage status monitoring section when there is no free B channel, and the case where it is not in MP communication, A procedure for instructing the main device extension interface to notify the extension telephone that has issued the call request that the call is not permitted. 2B using the MP communication to the control unit
Upon receiving the procedure for requesting to release the 1B channel out of the channels and the notification from the router main control unit that the MP communication was switched to the PPP communication, the line interface became unused in the router main control unit. A procedure for instructing to release the B channel, a procedure for instructing the outside line use status monitoring unit to change the used / unused information of the released B channel to “unused”, and an empty B channel for extension A procedure for instructing the line interface to make a call according to a call request from the telephone, a procedure for instructing the main device extension interface to make the extension telephone set to a call state, and a call path for an external line and an extension line on the time switch. The procedure for instructing to connect and using the unused B channel in the above-mentioned external line usage status monitoring section by the extension telephone which has made a call request Recording medium recording the main control program for the executing used / the procedure for instructing the rewriting unused information into the computer as. 10. A recording medium in which processing performed by the main main control unit of the key telephone device according to claim 5 is recorded, and when external line communication is completed at an extension terminal other than the router unit,
The procedure for instructing the line interface to release the B channel used by the extension terminal, the procedure for instructing the time switch to disconnect the communication path between the external line and the internal line, and releasing the external line usage monitoring unit If there is a procedure for instructing to change the used / unused information of the outside line B channel to “unused”, a procedure for notifying the router main control unit that there is an outside line free B channel, and if PPP communication is in progress,
A procedure for receiving an outgoing call request from the router main control unit and instructing the line interface to make a call, and a procedure for instructing the time switch to connect the external line PPP / MP processing unit side and an external line communication path. And a procedure for instructing the outside line usage status monitoring unit to set the used / unused information of the B channel transmitted by the line interface to “use” and to rewrite the information indicating that the router unit is MP communication; A recording medium recording a main device control program for causing a computer to execute a procedure for notifying a control unit that a call origination request has been received. 11. A recording medium in which processing of a display control unit of the key telephone device according to claim 5 is recorded, wherein a procedure for obtaining information of the outside line usage status monitoring unit through the main main control unit and an outside line free space B If the channel is 1 B channel or more, the procedure for displaying the lamp of the extension telephone corresponding to the in-use B channel of the outside line as "in use", and if there is no free B channel of the outside line, is the router unit performing MP communication? Check if it is in MP communication, and if the router unit is M
The procedure of instructing that the 1B channel of the 2B channels used in P communication is displayed as an empty state and the lamps of the extension telephones corresponding to the other B channels are instructed to display "in use", and the router section is set to MP A recording medium recording a display control program for causing a computer to execute a procedure for instructing the main control unit of the extension telephone to display all the lamps of the telephone as "in use" when not communicating.