RU2127958C1 - Automatic calling method for given pair of touch-dial telephones in commutation system of touch-dial telephones - Google Patents

Abstract

FIELD: telephone communication devices. SUBSTANCE: method involves detection of pair of touch-dial telephones for establishing automatic connection by calling between them in waiting mode of said pair of touch-dial telephones, and storing information about said touch-dial telephones in commutation system of touch-dial telephones. Then method involves establishing automatic connection of any telephone of pair of touch-dial telephones in response to automatic call from any of said touch-dial telephones, when they are in waiting mode. EFFECT: elimination of need to call telephone exchange operator for change of subscriber loop for possibility of automatic call service. 2 cl, 5 dwg

Description

 The invention relates to a keypad telephone switching system and, more particularly, to a method for specifying a pair of keypad telephone sets for automatically connecting on a call between them in a standby state of said keypad telephone.

 In a traditional push-button telephone switching system, a user of a push-button telephone must dial the subscriber number of a particular subscriber loop whenever he wants to make a call to the subscriber of this subscriber loop. In addition, if a subscriber loop is occupied by the user for a long time, then subscribers of other subscriber loops cannot call the user of this telephone with button dialing.

 The solution to this problem inherent in the known button switching telephone switching systems is described in Korean Patent Application No. 96-19234 filed by the applicant of the present invention, which discloses a method for making an automatic call. However, the proposed switching system allows you to specify only one pair of phones with button dialing. In particular, if a pair of push-button telephones for which automatic call service is to be provided has been previously determined, then the user of this push-dial telephone should seek help from the telephone exchange operator to change the subscriber's loopback subscriber to provide automatic service call.

 An object of the present invention is to provide a method for specifying various pairs of telephones for communicating between push-button telephones with automatic call service.

 It is also an object of the present invention to provide a method for freely changing pairs of telephones for communicating between push-button telephones.

 These and other tasks are solved in the claimed method of making an automatic call for the specified pair of phones with a keypad associated with the switching system of telephones with a keypad. This method includes the steps of indicating a specific pair of phones with button dialing to provide them with service for automatically connecting on a call between them when the specified pair of phones with button dialing is in standby mode and storing information about the specified phones with button dialing in the switching system of phones with button dialing; and providing, for any one of the pair of said telephones with a push-button dial set, an automatic call connection in response to a call request by any of said push-button telephones, said telephones being in standby mode.

 These and other features and advantages of the invention are explained in the following description, illustrated by the drawings, in which the following is presented: FIG. 1 is a block diagram of a button switching telephone switching system in which the present invention can be used; FIG. 2 is a flowchart of an automatic call indicating procedure according to a possible embodiment of the invention, FIG. 3 is a flowchart in a setup and hang-up procedure of an automatic call according to a possible embodiment of the invention, FIG. 4 is a flowchart for connecting and disconnecting an automatic call according to a possible embodiment of the invention, FIG. 5 is a diagram illustrating a memory card in which said pairs are registered for realizing an automatic call according to a possible embodiment of the invention.

 In the following description, specific features of the invention, such as detailed flowcharts of procedures, are provided to provide a more complete understanding of the invention. For specialists in this field of technology, however, it should be obvious that the present invention can be implemented in other ways, without using the mentioned specific features. A detailed description of well-known functions and devices is omitted so as not to complicate the understanding of the invention.

 A preferred embodiment of the present invention will be explained in detail below with reference to the drawings.

 In FIG. 1 is a block diagram of a button switching telephone switching system in which the present invention can be used. As shown in FIG. 1, the controller 110 controls all operations of the button switching telephone switching system in accordance with a program stored in the ROM 114. In the ROM 114, the source program and the operating program for the controller 110 are stored. The RAM numbers 112 are stored in the RAM 112 (i.e., telephone numbers subscribers of subscriber loops) and data generated as a result of performing telephone switching functions. The switching circuit 116 performs switching operations under the control of the controller 110. When controlling the controller 110, the telephone exchange circuit 118 connects a plurality of incoming telephone exchange lines from the public switched telephone system (not shown) to the switching circuit 116. When controlled from the controller 110, the subscriber circuit 120 of loops connects a plurality of terminals of subscriber loops (i.e., telephones with push-button dialing) KTS0 to KTSn with a switching circuit 116. When controlled from controller 110, the signal generator Onka 122 generates a call signal after receiving a call request from a telephone exchange circuit 118 or from a subscriber loop circuit 120 for a particular subscriber loop terminal.

 In FIG. 2 is a control flowchart for indicating an automatic call in accordance with a possible embodiment of the invention, including the steps of indicating a pair of push-button telephones to be provided with automatic call service, end-call for a pair of push-dial telephones for which automatic call mode and selection of a pair of telephones to indicate or end calls automatically.

 In FIG. 3 shows a control flowchart for setting up and disconnecting an automatic call in accordance with a possible embodiment of the invention, including the steps of registering a telephone number of a telephone with a push-button dialing of the called subscriber indicated for automatic calling, switching to standby mode in response to an automatic call request and hang up the automatic call for the phone of the called party corresponding to the registered phone number, in response to the hang up request omaticheskogo call from a touch-tone phone set, which provided an automatic call.

 In FIG. 4 is a control flowchart for connecting and disconnecting an automatic call according to a possible embodiment of the invention and including the steps of verifying whether the automatic call has been hanged up for said push-button telephones; checking whether the handset of the calling or called telephone is picked up or the incoming call signal is detected; disconnecting an automatic call when the automatic call hangs up, or when you pick up the handset of the calling or called subscriber, or when detecting an incoming call signal; and establishing an automatic call connection if the keypad or calling party telephones are in standby mode. The automatic call setup and release modes are used sequentially for a variety of push-button telephones. After completing the above procedure with all push-button telephones, the procedure for establishing and disconnecting an automatic call can be performed again after a predetermined time interval.

In FIG. 5 is a diagram illustrating a memory card of RAM 112 in accordance with the present invention, in which the data l _ij represents the availability of an automatic call between the i-th and j-th push-button telephones. If the data l _{ij is} set to "1", then this means the availability of automatic calling for the i-th and j-th phones with button dialing. If the data l _{ij is} set to "0", then this means that the automatic call is not available for i-th nj-th phones with push-button dialing.

 A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

 As shown in FIG. 2, the controller 110 first checks in step 210 whether or not request key input data has been received to indicate a pair of key dial phones for the automatic call mode from any of the KTSO-KTSn key dial phones. If the key input data is received, the controller 110 proceeds to step 212 to set the counters “i” and “j” to the state “0”. The values of the “i” and “j” counters are used to select a pair for establishing a connection between the i-th and j-th phones. After setting the values of the counters “i” and “j”, the controller 110, in steps 214-226, searches for key input of data from a particular telephone with a keypad.

 At step 214, it is checked whether key input data corresponding to the “increment” command is found to select the next push-button telephone number. If this data is detected, the controller 110 proceeds to step 228 to increase the counter value "i" by 1 and then returns to step 214 to search for the next key input data. However, if at step 214 no key input data corresponding to the “increase” command is detected, then at step 216, it is checked whether the key input data corresponding to the “reduce” command is detected to select the previous button number telephone. If this data is detected, the controller 110 proceeds to step 230 to decrease the counter value “i” by 1 and then returns to step 214 to search for the next key input data. However, if at step 216 no key input data corresponding to the “reduce” command is detected, then at step 218 it is checked whether the key input data corresponding to the “change” command is detected to select the next telephone number of the called party to indicate in the automatic call mode. If this data is detected, the controller 110 proceeds to step 232 to increase the counter “j” by 1 and then returns to step 214 to search for the next key input data. However, if this data is not found, then at step 220 it is checked whether the key input data corresponding to the “retransmit” command is found to select the telephone number with the keypad specified for the previous telephone of the called party for automatic calling. If this data is detected, the controller 110 proceeds to step 234 to decrease the counter “j” by 1 and then returns to step 214 to search for the next key input data.

In addition, at step 222, it is checked whether key input data corresponding to the “install” command is detected to request an automatic call for a pair of key dialing phones selected in steps 214-220. If this data is found, then the controller 110 proceeds to step 236. The controller 110 checks in step 236 whether the i-th and j-th phones with a push-button set, respectively, KTSi and KTSj are available for automatic calling. If they are not available, then the controller 110 returns to step 214 to search for the next key input. However, if these phones are available, the controller proceeds to step 238 to store the state “1” corresponding to the automatic call indication in the cell l _{ij of the} RAM 112 having a memory card, as shown in FIG. 5. After this, the controller 110 returns to step 214 to search for the next key input. If at step 222 no data corresponding to the “install” command is detected, then at step 224 it is checked whether the key input data corresponding to the “hang up” command is detected to request the pairing of the telephone with the push-button dialing selected at steps 214 to 224 to end automatically. If this data is detected, then the controller 110 proceeds to step 240 to store the state "0" corresponding to the end of the automatic call in the cell l _{ij of the} RAM 112. After that, the controller 110 returns to step 214 to search for the following key input data. If the key input data corresponding to the end call command is not detected at step 224, then at step 226 it is checked whether the key input data corresponding to the end of instruction command is detected to request completion of the instruction or the automatic call is ended for all pairs. If this data is detected, the procedure for specifying telephone pairs for an automatic call in accordance with the present invention is completed.

With reference to FIG. 3 below, the procedure for hanging up and setting up an automatic call will be described. The controller 110 checks at step 310 whether the installation mode data corresponding to the setup or hang up of the automatic call is received from the KTS0-KTSn keypad phones. If this data is received, the controller 110 checks in step 312 whether the telephone with the keypad that requested the setting of the automatic call mode is available for automatic calling. If it is available, then the controller 110 proceeds to step 314 to switch the button switching telephone switching system to the automatic call setup / release mode. The controller 110 checks in steps 316 and 328 whether the data of the start of the automatic call or the end of the automatic call from the KTS0 KTSn phones is received. If the automatic call setup data is detected at step 316, then the controller 110 proceeds to step 318 to receive the number of the called party to whom the automatic call service is to be provided. After receiving the subscriber loop number, the controller 110 proceeds to step 320 to check whether the telephone with a keypad corresponding to the subscriber loop number is indicated for automatic calling by searching for the data stored in the memory cell l _ij RAM 112. Data "0" stored in the memory cell l _ij , represent the state when the automatic call is not specified, and the data "1" represents the state when the automatic call is specified. If the telephone of the called party is not available for automatic calling, the controller 110 proceeds to step 332 to switch the telephone switching system of the push-button telephones into standby mode. However, if the telephone of the called party is available for automatic calling, then the controller 110 proceeds to step 322 to check if the telephone of the called party is indicated for automatic calling. If it is, then the controller 110 proceeds to step 324 to end the automatic call of the called party telephone and then proceeds to step 326. Otherwise, the controller 110 proceeds directly to step 326 without going through step 324. In step 326, the controller 110 registers the loop number the telephone of the called party received at step 318, and proceeds to step 332 to switch the telephone switching system of the keypad phones to the standby mode. In addition, if the key input data corresponding to the hang up command is detected in step 328, the controller 110 proceeds to step 330 to erase the number of the telephone line of the called party registered in RAM 112 to end the automatic call and then proceeds to step 332 for Switching the telephone switching system with push-button dialing to standby mode.

Below with reference to FIG. 4, a procedure for making an automatic call will be described. The controller 110, in step 410, sets the counter k to the state “0” for sequentially selecting push-button telephones. After that, the controller 110 in step 412 checks whether the connection of the k-th telephone KTSk to make an automatic call. If it is installed, then the controller 110 at steps 414-418 checks the status of the telephone with a keypad for which a connection is established to make an automatic call. More specifically, at step 414, it is checked whether there is an end call status for an automatic call for a telephone with a keypad KTSk based on data stored in the memory cell l _ij . In addition, at step 416, it is checked whether the k-th telephone is off-hook or if an incoming call mode is provided. At step 418, it is checked whether the telephone of the called party is off-hook or if the incoming call mode is provided. If the test result is positive at any of steps 416, 418, the controller 110 proceeds to step 420 to disconnect the automatic call for these phones using the switching circuit 116. After that, at step 430, the controller 110 increments the counter k by one to select the next button-type telephone .

 If the connection for the automatic call is not made at step 412, then the controller 110 at step 422 checks whether the k-th KTSk telephone is available for automatic call, in the same manner as described above. If the k-th telephone is available for automatic calling, the controller 110 proceeds to step 424 to check whether the k-th telephone is in standby mode or not. If the k-th telephone is in standby mode, the controller proceeds to step 426 to check whether the telephone of the called party is also in standby mode. If both phones are in standby mode, then the controller 110 in step controls the switching circuit 116 to make an automatic call connection. After that, at step 430, the controller 110 selects the next KTSk + l button telephone. The controller 110 at step 432 checks whether the above-described maintenance has been completed for all KTS0-KTSn push-button telephones. If it is not completed, then the controller 110 at step 434 returns to step 410 to repeat the above procedure after a predetermined time (for example, 50 ms).

 From the above it follows that when the automatic call is established, the subscriber of the telephone with key dialing can communicate with the telephone of the called subscriber using a speaker and a microphone in the telephone with key dialing, in standby mode, without additional dialing of the telephone number. In addition, if the handset of one of the pair’s phones is off-hook or an incoming call is received, the automatic call is disconnected.

 Thus, a user of a telephone with a push-button set can freely make an automatic call to any subscribers of the required subscriber loops, without contacting the telephone exchange operator for help.

 Although the preferred embodiment of the invention has been described in detail above, it is obvious that those skilled in the art can make various changes and modifications to the disclosed principles of the invention without changing the spirit and scope of the present invention, as defined in the claims.

Claims (2)

 1. A method of making an automatic call for a specified pair of phones with a keypad associated with a switching system for telephones with a keypad, characterized in that it includes the steps of specifying a specific pair of phones with a keypad for providing them with a service for automatically connecting on a call between them when the specified pairs of phones with push-button dialing in standby mode and storing information about the specified phones with push-button dialing in the switching system of telephones with push-button dialing , and providing for any of the pair of said handsets with a push-button set, an automatic call is made in response to a call-up request by any of said push-button phones, said phones being in standby mode.  2. The method according to claim 1, characterized in that the step of indicating a pair of phones with a keypad includes the steps of selecting a pair of phones with a keypad in response to key input from a telephone with a keypad, establishing an automatic call connection for said pair of phones with a keypad a response to a key input of a setup request from a telephone with a keypad and disconnecting an automatic call for said pair of telephones with a keypad in response to a key input of a hangup request from a telephone with a keypad.

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