JPH0229099A - Telephone system with extension call function - Google Patents

Abstract

PURPOSE:To establish extension or line wire talking intended by a talking party by identifying an extension dialing or a line wire dialing without causing any psychological irritation to the talking party. CONSTITUTION:A telephone set 10 consists of a master set 11 and plural telephone slave sets 12, and the master set 11 consists of a main telephone circuit 15, a control circuit 16 and a power supply circuit 17. Moreover, a dial number of an extension call dialing to each of extension telephone slave sets is specified by a digit number (1 digit) smaller than the dial number in the external line call dialing. Moreover, after the control circuit 16 detects the dialing of the same number as the said specific dial number, if the dialing is not detected within a prescribed internal/external discrimination period (3sec) (1), the dialing is discriminated to be the extension call dialing and the calling of the corresponding to the extension to the i-th telephone slave set i12 is executed, and if the next dialing is detected in the external/internal discrimination period (3sec) (2), the entire dialing is discriminated to be the line wire call dialing and the calling to a trunk line is executed.

Description

[Detailed description of the invention] [　Industrial application field　]

The present invention relates to a telephone device having an extension calling function.

[Conventional technology]

Some telephones and devices, such as home telephones, have a main telephone circuit connected to a central office line, and a plurality of telephone handsets, such as telephone handsets and intercoms, each connected to the main telephone circuit. With the above-mentioned telephone device, it is possible to establish an internal call with another telephone handset by dialing an extension from the telephone handset, or to establish an outside call with a central office line by dialing an outside telephone handset. At this time, in the above-mentioned telephone device, in its control circuit, it is possible to identify whether the dialing added to the telephone handset is intended for internal dialing or external dialing. There is a need. For this reason, regarding extension dialing, after 0°° dialing (extension identification dialing), there is a period of several seconds to determine whether the number is in or out, and if there is no outside dialing within that period, an extension call is made. In many cases, the mode is established, and then the extension number is dialed.

[Problem to be solved by the invention]

However, in the above-mentioned conventional extension dialing method, it is necessary to wait several seconds (internal/internal determination period) between dialing "0" and dialing the extension calling number, which makes it difficult for the caller to The present invention distinguishes between internal dialing and external dialing without causing psychological irritation to the caller, and allows the caller to make an internal or external call as intended by the caller. The purpose is to establish

[Means to solve the problem]

The present invention is a telephone device comprising a main telephone circuit connected to a central office line, a plurality of telephone handsets respectively connected to the main telephone circuit, and a control circuit for driving and controlling the main telephone circuit. , the main telephone circuit includes a switching circuit section that can perform exchange connections between the central office line and each telephone handset, and the control circuit converts the dial number for internal call dialing for each extension telephone handset into the dial number for external call dialing. After specifying the number of digits smaller than the number of digits of the number and detecting a dialing with the same number as the specified dial number, ■ If the next dialing is not detected within a certain internal/external discrimination period, the above dialing is set to an extension. It determines that the dialing is a call dialing, executes the calling operation to the corresponding extension call handset, and ■When the next dialing is detected within the above-mentioned internal/external discrimination period, all of those dialings are determined to be external call dialing. It is designed to determine the location of the call and execute a calling operation for the central office line.

[Operation 1] In the present invention, the dial number for extension dialing is set to one digit "'i" (t = 1.2...9
For example, the dial number for external call dialing can be
x x −x x x x” or “0XXx-xxx
x” (external line O origination) or “Q 3-XXX-××××”°
Specify using the smaller number of digits. As a result, the caller can, for example, input the destination telephone handset number to the fourth telephone handset.
4°° or "04"° is dialed all at once, then there is a period of several seconds to determine whether the dial is in or out, and if there is no next dialing (xx - xxxx) within that period,
The control circuit controls the dialing speed of the above-mentioned caller "4" or "
'04'' can be identified as extension dialing. That is, according to the present invention, the caller dials a specific dial number for each extension handset at once, and then waits for a certain internal/external discrimination period. Since it is sufficient to wait for the caller to make the call, it is possible to identify whether it is an internal or external dialing and establish the internal or external call intended by the caller, without making the caller feel psychologically irritated. In the present invention, if the specific dial number includes, for example, "0" as the internal/external line identification number, the load on the control circuit for determining internal/external lines can be reduced. 2 to 5 are flowcharts corresponding to various operating modes of the telephone device. The telephone device 10 includes a main device 11 and a plurality of devices (in this embodiment, 5 telephone handsets 12 (1 telephone handset to 5th telephone handset)
It consists of The main device 11 has a main telephone circuit 15, a control circuit 16, and a power supply circuit 17. The main telephone circuit 15 is connected to the office lines 18A and 18B, and is connected to each telephone cordless handset 12 with two communication lines 19A and 18B, respectively.
19B. The main telephone circuit 15 includes a ringing signal loop detector 21, a DTM
F oscillator 22, capacitor C1, resistor R1, relay rl
1, r12, transformer t1, and capacitor C2. In addition, the main telephone circuit 15 includes each telephone handset 12 (112 to 5
12), the calling signal oscillator 2
6 (126~526L off-foot detector 27 (12
7~527L extension loop detector 28 (128~528
), PB receiver 29° capacitor C13-C53, C
14-C54, relay r1.3-r53, r14-r5
4, batteries b11 to b51, transformers t12 to t52
It is equipped with The main telephone circuit 15 also includes a crosspoint circuit (switching circuit section) 31 consisting of a crosspoint IC. The cross point circuit 31 has five horizontal lines "1" to "°5" and two vertical lines "A" and "B'" arranged orthogonally to each other. The "1°" line to "°5" line is the communication circuit for each telephone handset, and the I I+ line to "5".
52 terminal on the side opposite to the telephone handset is connected. The A I+ line is a station line circuit, and the terminal of the transformer t1, which is an example of a counter line, is connected to the "A" line. Line B' is an extension circuit. The cross point circuit 31 turns on/off the contact state of the cross pounds (indicated by Δ in FIG. 1) of each horizontal line and each vertical line by the control circuit 16, and connects each telephone handset 12 to an outside line (office line), Exchange connections to each circuit of the extension. The control circuit 16 includes a ring signal loop detector 21 of the main telephone circuit 15, an off-footer detector 27 (127-527),
The extension loop detector 2B (128-528) receives each transmission signal etc. from the FB receiver 29. Control circuit 16
The cross point circuit 31, DTMF oscillator 22, and calling signal oscillator 26 are based on the reception results of the respective transmission signals.
Drive and control etc. Further, the control circuit 16 sets the dial number 11Hn or O3'' (il, telephone handset number of 2...5) for extension call dialing for each extension telephone handset from the dial number for external call dialing. The control circuit 16 is specified by a small number of digits (1 digit).Furthermore, the control circuit 16 selects the specified dial number "i"° or °O.
After detecting a dialing with the same number as "l", ■ If the next dialing is not detected within a certain internal/external discrimination period (3 seconds), the above dialing is determined to be an extension call dialing, and the corresponding extension is When the next dialing is detected within the above-mentioned internal/external determination period (3 seconds), all the dialings are determined to be external call dialing, and the station Here, when the extension calling dial number is set to the two-digit "Ol", "0゛° functions as an internal/external calling identification number." Furthermore, even if the control circuit engineer 6 does not detect the next dialing within a certain internal/external call discrimination period (3 seconds) after detecting the above-mentioned "0" dialing, it establishes the extension call mode and continues. It is also possible to execute a calling operation to the corresponding shipwreck telephone handset i12 based on the dialing of the extension destination number. Each telephone element [12 has a telephone circuit 34 and a power supply circuit 35. The telephone circuit 34 includes a dial circuit section, a telephone call circuit section, and a ringer circuit section (ring circuit). Below, various operating modes of the telephone device 10 will be explained. (Outside call...see Figure 2) When attempting to make an outside call using any telephone handset 12, for example, the first telephone handset 112, when the handset of the first telephone handset 112 is off-hook from the standby state, , first telephone handset 11
Extension loop detector 128 corresponding to No. 2 sends this off-hook information to control circuit 16. The control circuit 16 turns on the crosspond (A, 1) of the crosspoint circuit 31,
By turning relay rll toward transformer t1, an outside line transmission mode is established. (Incidentally, the determination of an outside line call will be explained in the extension call mode.) When the first telephone handset 112 dials the destination number, the extension loop detector 128 corresponding to the first telephone handset 112 (the dialing information is dial pulse signal) or PB receiver 2
9 (when the dial information is a button signal) sends this dial information to the control circuit 16. When sending a dial pulse signal to the central office line, the control circuit 16 controls the central office line 18A by turning on/off relay rll.
, 18B, and at this time relay r1
2 to prevent pulse noise from being transmitted to the telephone handset 12 side during dialing. ■When sending a button signal to the central office line, ``This dial information is transmitted to the DTMF oscillator 22, and the oscillator 22
The tone is transmitted from the station to the central office lines 18A and 18B. When the ringing signal loop detector 21 detects a reversal of the office line based on the off-footer of the called party telephone hanger, this detection information is transmitted to the control circuit 16.
The external line call status is established. (Incoming outside line call...see Figure 3) When a calling signal from the office arrives on the office lines 18A and 18B,
The ring signal loop detector 21 detects the arrival of an outside line, and this detection information is sent to the control circuit 16. The control circuit 16 is
The first telephone handset 112 and the second telephone handset 2 are set in the priority order of outside line calls in advance by the call priority setting unit 16C.
The relays r13 and r23 corresponding to 12 are switched to the ringing signal oscillator 26, the relays r14 and r24 are switched to the off-footer detector 27, and the first telephone handset 112 and the second telephone handset 2 are switched.
12 rings (calling operation). The control circuit 16 includes a first telephone handset 112 and a second telephone handset 21.
The number of rings of 2 is counted by the ring count section, and each off-footer detector 27 detects the on-hook/
Off footer information is sent to the control circuit 16. ■If the first telephone handset 112 or the second telephone handset 212 responds within five rings as the ringing operation period preset in the ringing number setting section 16B, the control circuit 16
are relays r13, r23, and relays r14, r24
■If the first telephone handset 112 or the second telephone handset 212 does not respond within 5 rings, the system is activated. 111 circuit 16
switches the relays r33 to r53 corresponding to the other third telephone handset 312 to the fifth telephone handset 512 to the ring signal oscillator 26, switches the relays r34 to r54 to the off-hook detector 27, and also switches the relays r33 to r53 corresponding to the other third telephone handset 312 to the fifth telephone handset 512 to the off-hook detector 27, Ring the third telephone handset 31
When any of the second to fifth telephone handsets 512 responds (detected by the on-hook/off-footer information of the off-hook detector 27), relays r33 to r53 and relays r34 to r
54 will be restored. Next, the control circuit 16 switches the relay rll to the transformer t1, and, for example, if the second telephone handset 212 is off-hook and in the responding state, turns on the cross point (A, 2) of the cross point circuit 31, Establish outside call status. (Extension Call Part 1...Refer to FIG. 4) First, the case where the specified extension calling dial number is set to "O1"' will be explained. When attempting to make an extension call using any telephone handset 12, for example, the fifth telephone handset 512, when the handset of the fifth telephone handset 512 is off-hook from the standby state, the fifth telephone handset 51
Extension loop detector 528 corresponding to No. 2 sends this off-footer information to control circuit 16. The control circuit 16 turns on the cross bond (A, 5) of the cross point circuit 31,
By turning relay r11 toward transformer t1, an outside line transmission mode is established. ■Next, when the fifth telephone handset 512 dials “0°°, the extension loop detector 28 corresponding to the fifth telephone handset 512
sends this dial information to the control circuit 16. ■The control circuit 16 receives dial information indicating that, for example, "l" dialing as the called destination telephone handset number was performed on the fifth telephone handset 512 consecutively (within 3 seconds) after the above ■. , Furthermore, when the dial information for the next dialing by the fifth telephone handset 512 is not entered for 3 seconds thereafter (inside/outside determination period), the continuous dialing from the above ■ is 0! ”° is the extension call dialing for the telephone handset 1.12. As a result, the control circuit 16 sets the relay r
ll towards capacitor c1, and turn on/off the cross point (B, 5) of the cross point circuit 31 to
An extension dialing tone is sent to the telephone handset 512, and the cross point (A, 5) is turned off to establish an extension dialing mode. ■The control circuit 16 controls the fifth telephone handset 5 within 3 seconds after the above ■.
Even when the dial information for the next dialing by 12 is not entered, the extension call mode is established in the same manner as in the above (2). In this case, following this, the fifth telephone handset 5
12 is the number to call! When you dial (1 to 4), the fifth
Extension loop detector 28 corresponding to telephone handset 512 sends this dial information to control circuit 16 . ■After ■ or ■ above, control circuit 16, fifth telephone handset 5
The on-hook/off-hook information of the called telephone handset l112 is obtained by the extension loop detector 28 of the called telephone handset f12 dialed by No. 12. (1) If the called telephone handset 12 is in the on-footer state, the control circuit 16 switches the relay r13 corresponding to the called telephone handset 12 to the ringing signal oscillator j226, and switches the relay r2
4 off footer detector! Switch to 27 and call destination phone handset! 12 and turn on/off the cross point (B, 5) of the cross point circuit 31 to send a ring tone to the fifth telephone handset 512. The cross point (B. 5) of the cross point circuit 31 is turned on/off to send a busy tone to the fifth telephone handset 512, and the fifth telephone handset 512 dials another destination number. After executing step (1) above, the control circuit 16 detects the off-footer detector! (3) If the called telephone handset 212 goes off-hook, restore the relays r1.3 and r14 of the called telephone handset 12;
For example, when the first telephone handset 112 responds, the crosspoints (B, 1) and (B, 5) of the crosspoint circuit 31
), establish an extension call state, and (4) If the called telephone handset 212 does not go off-hook and does not respond, the fifth telephone handset 512 dials another called number and calls another telephone. You can call a slave unit. (2) In the intermediate process of (2) above, the control circuit 16 provides dial information for the next dialing by the fifth telephone handset 512 for 3 seconds (inside/outside determination period) after the above-mentioned continuous dialing "Ol°", for example, ' If “xxx-x×××” is entered,
All those dialing of! , -xxx-xxxx
It is determined that "°" is an outside line call dialing, and the call operation to the central office line is executed in the same manner as in the outside line call mode shown in FIG. 2, and an outside line call is established. In the above embodiment, the dial number for extension dialing is, for example, a two-digit number "oj2" (41!=1゜2・
For example, the dial number for external call dialing is ``'oz-xxx-x x x
Specify the number of digits smaller than 9 digits of " After a determination period, if there is no next dialing "xxx-xx×X" within the internal/external determination period, the control circuit can identify the caller's dialing "04" as an extension dialing. That is, according to the above embodiment, the caller dials the specific dial number for each extension handset all at once, and then waits for a certain period of time to determine whether the caller is in or out. It is possible to identify whether the dialing is an internal line or an external line, and to establish an internal line call or an external line call that the caller intends to make, without making the caller feel confused. Further, in the above embodiment, since the extension identification number, for example, "0°" is included before the specific dial number, for example, the above-mentioned "iI+" digit, the load on the control circuit for determining whether the dial is inside or outside can be reduced. (Extension Call Part 2...Refer to Figure 5) Next, we will explain the case where the specified extension calling dial number is "i I+". When attempting to make an extension call, when the handset of the fifth telephone handset 512 is off-hook from the standby state, the fifth telephone handset 51
Extension loop detector 528 corresponding to No. 2 sends this off-hook information to control circuit 16. The control circuit 16 turns on the cross bond (A, 5) of the cross point circuit 31,
By turning relay rll toward transformer t1, an outside line transmission mode is established. ■Next, when the fifth telephone handset 512 dials “2”, the extension lube detector 28 corresponding to the fifth telephone handset 512
sends this dial information to the control circuit 16. ■ When the dial information for the next dialing by the fifth telephone handset 512 is not received for the next three seconds (inside/outside discrimination period), the control circuit 16 changes the dialing 2°' from the above ■ to the second dialing.
It is determined that the call is an extension call dialing for the telephone handset 212. As a result, the control circuit 16 controls the relay rll
to the capacitor CI, cross point circuit 31
The cross point (B, 5) is turned on/off to send an extension dial tone to the fifth telephone handset 512, and the cross point (A, 5) is turned off to form an extension dial mode. ■After the above ■, the control circuit 16 and the fifth telephone handset 512 dialed the destination telephone handset! ! , 12 obtains on-hook/off-hook information of the called telephone handset 1.12. (1) If the called telephone handset 12 is in the on-footer state, the control circuit 16 switches the relay r13 corresponding to the called telephone handset 12 to the ringing signal oscillator 226, and activates the relay r! 4
is switched to off-hook detector 227, and the destination phone handset 2
12 and turn on/off the cross point (B, 5) of the cross point circuit 31 to send a ring tone to the fifth telephone handset 512. The cross point (B. 5) of the cross point circuit 31 is turned on/off to send a busy tone to the fifth telephone handset 512, and the fifth telephone handset 512 dials another destination number. After executing step (1) above, the control circuit 16 obtains the on-hook/off footer information of the off-hook detector 227, and (3) when the called telephone handset 212 goes off-hook, the control circuit 16 activates the relay r of the called telephone handset 12. /23, r14 was restored,
For example, when the first telephone handset 112 responds, the crosspoints (8, 1) and (B, 5) of the crosspoint circuit 31
), establish extension call status, and (4) call destination phone handset! 12 does not go off-hook and does not respond, the fifth telephone handset 512 can dial another destination number and call the telephone handset 551). ■The control circuit 16, in the intermediate process of above (■), controls the control circuit 16 for 3 seconds after the above-mentioned continuous dialing 2'' (0 period for internal/internal/internal discrimination).
If the dial information for the next dialing by the fifth telephone handset 512, for example "xx-xxxx", is entered, the entire dialing "xxxx-xxxx" is determined to be an external call dialing, and the above-mentioned procedure is performed. The calling operation for the central office line is executed in the same manner as in the outside line calling mode shown in FIG. Specify the dial number of the ring as a two-digit "i" (i = 1゜2... phone handset number) with a smaller number of digits than the dial number for external call dialing. For example, a person dials the destination telephone handset number °°4°'' on the fourth telephone handset, then waits for a few seconds to determine if it is inside or outside, and then makes the next dialing within that period.
If "xx-xxxx" is not present, the control circuit can identify the caller's dialing 4'' as an extension dialing. That is, according to the above embodiment, the caller can All you have to do is dial a specific dial number and then wait for a certain internal/internal discrimination period, so you can identify whether it is an internal or external dialing without making the caller feel psychologically irritated.
An internal or external call intended by the caller can be established. [Effects of the Invention] As described above, according to the present invention, it is possible to identify internal dialing or external dialing without making the caller feel psychologically irritated, and to make the caller's intended internal or external call. A call can be established.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing a telephone device according to an embodiment of the present invention, FIG. 2 is a flowchart corresponding to the outside line originating mode, FIG. 3 is a flowchart corresponding to the outside line receiving mode, and FIG. 4 is an extension call mode. FIG. 5 is a flowchart corresponding to part 1 of the M4i 11 episode mode. 10...Telephone device, 12...Telephone handset, 15...
Main telephone circuit, 16... Control circuit, 18A, 1.8B.
... Office line, 19A, 19B... Call line, 31... Cross point circuit (exchange circuit section). Patent applicant: Sekisui Chemical Co., Ltd. Representative Hiro 1) Kaoru

Claims (1)

[Claims] (1) A telephone device comprising a main telephone circuit connected to a central office line, a plurality of telephone handsets each connected to the main telephone circuit, and a control circuit for driving and controlling the main telephone circuit, The main telephone circuit includes a switching circuit section that can perform exchange connections between the central office line and each telephone handset, and the control circuit converts the dial number for internal call dialing for each extension telephone handset to the dial number for external call dialing. After detecting a dialing with the same number as the specified dial number, [1] If the next dialing is not detected within a certain internal/internal discrimination period, the above dialing is detected. It determines that the dialing is an internal call dialing, executes a calling operation to the corresponding extension call handset, and [2] When the next dialing is detected within the above internal/external determination period, all of those dialings are treated as external call dialing. A telephone device that has an extension calling function that determines that the phone is a station line, and executes a calling operation for the central office line.