KR20040090883A - PSTN-Internet Analog Call Connection Interworking Device and the Control Procedure - Google Patents

Abstract

PURPOSE: An analog call connection interworking device between a PSTN and the Internet, and a control procedure thereof are provided to be connected between a local line and an analog VoIP gateway, and to interwork a call connection between the local line and the Internet based on a remote control signal, then to connect a call with a subscriber. CONSTITUTION: A line switch(102) connects and disconnects a general phone(120) with a local line(14) or an analog VoIP gateway(110). A local switch(105) switches a connection of the local line(14). A local line sensing and hook switch unit(106) senses the frequency of ring generation of the local line(14). A line sensing and hook switch unit(101) senses the frequency of ring generation of an analog VoIP gateway line(24). A signal generator(103) cuts off a feeder current between the local line(14) and the analog line(24), and transmits a voice and a signal. A signal detector(104) cuts off a feeder current between the local line(14) and the line(24). A controller(107) consists of a memory and a CPU.

Description

PSTN-Internet Analog Call Connection Interworking Device and the Control Procedure}

The present invention relates to an analog call connection interworking device and a control procedure between the PSTN and the Internet. The apparatus is connected between a general telephone line, a trunk line of a PSTN subscriber line, and an analog VoIP gateway, based on a remote control signal of a user using an existing telephone network. It is a device that links call connection between CO line and internet, and also connects to other PSTN and subscriber of mobile phone network by remote control of analog call connection interlocking device installed in other destination area.

In general, there are PC-PC, PC-phone, and phone-phone systems. The PC-PC method is a method of making a call between PCs connected to the Internet. The PC-phone method is a method of connecting an existing telephone network by accessing the service homepage of an Internet phone operator from a PC connected to the Internet. As operators install large-capacity VoIP gateways connecting the Internet and existing telephone networks in specific areas, they can make calls over existing telephone networks. In other words, the caller is an Internet telephone method and the called party is a conventional telephone method. Recently used telephone-phone system receives telephone service in the same way as a regular telephone through a telephone connected to the Internet, and subscribers install an analog VoIP gateway in their home or office, or by an Internet telephone provider through an existing telephone network. It is possible to connect to a large-capacity VoIP gateway device and make mutual internet calls.

Accordingly, an object of the present invention is to connect to an individual or SOHO analog VoIP gateway installed in a home or office through a normal telephone, a public telephone or a mobile cellular phone without using a VoIP gateway installed by an Internet telephone provider, and then make an Internet telephone call. In addition, the present invention provides an analog call interworking device between the PSTN and the Internet, which enables call connection with another phone number using the PSTN of the other destination.

1 is an external connection diagram including an internal circuit block diagram of a PSTN-Internet analog call connection interworking apparatus according to an embodiment of the present invention.

2 is an operation control flowchart of providing an Internet telephone service through an analog VoIP gateway when a PSTN call is received in the PSTN-to-Internet analog call connection interworking apparatus according to an embodiment of the present invention.

3 is an operation control flowchart of providing a PSTN telephone service through a trunk line when receiving an internet telephone call in the PSTN-Internet analog call connection interworking apparatus according to an embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation control procedure for configuring an outgoing-to-called call between the PSTN and the Internet when the PSTN-Internet analog call connection interworking device is controlled by a dedicated call connection function according to an embodiment of the present invention.

In order to achieve the above object, it will be described with reference to the drawings with respect to the PSTN-internet analog call connection interworking apparatus and control procedure in the present invention.

1 is an external connection diagram including an internal circuit block diagram of a PSTN-Internet analog call connection interworking apparatus according to an embodiment of the present invention.

Referring to the external connection diagram of the analog call connection interlock device 100, the configuration is connected between the general telephone 120 and the PSTN (10) subscriber line trunk line 14 and the analog VoIP gateway 110, the general telephone ( 120, 125 or after connecting to the analog call connection interlock device 100 using the mobile phone 130 of the mobile phone network 30 interworking with the PSTN (10) and the analog VoIP gateway 110 and the Internet modem 22 and It is possible to make an Internet phone call via the Internet 20. In the opposite direction, a call received from the Internet is transmitted to the general telephone 120 and the PSTN 10 via an analog VoIP gateway 110 and an analog call connection interlocking device 100. Call connection with other mobile phones 125 or mobile phones 130 of the mobile phone network 30 is possible.

Next, the internal circuit block diagram of the analog call connection interlock device 100 will be described. The circuit switching unit 102 disconnects and disconnects between the general telephone 120 and the trunk line 14 or the analog VoIP gateway 110. ;

A trunk line switching unit 105 for switching the trunk line 14 connection of the PSTN 10;

A trunk line detection and hook switch unit 106 that detects the number of ring occurrences of the trunk line 14 and has an automatic hook on / off function;

A line detection and hook switch unit 101 which detects the number of ring occurrences of the analog VoIP gateway line 24 and has an automatic hook on / off function;

When the user controls the function, the user can transmit guide voice or beeping signal for convenience of use, and send out the phone number, IP address and signal for remote control of the analog call connection interlocking device in advance. And a signal generator 103 having a function of intercepting a feed current between the trunk line 14 and the analog VoIP gateway line 24 so as to transfer voice and signals to each other;

Receives and stores the remote control signal or telephone number dialed by the caller from the CO line 14 or the analog VoIP gateway line 24, and detects and stores the feed current between the CO line 14 and the analog VoIP gateway line 24. A signal detector 104;

And a control unit 107 composed of a program for controlling all the functional units of the apparatus, a memory storing various data, and a CPU.

The analog call connection interlock device 100 proposed in the present invention is connected between the general telephone 120 and the trunk line 14 and the analog VoIP gateway 110, and according to the configuration, the general telephone 120 and the analog VoIP gateway 110 ) Or as a call connection interworking module in IP-Phone with VoIP function, and can be manufactured as a collective device or a collective module that can handle several lines.

2 is an operation control flowchart of providing an Internet telephone service through an analog VoIP gateway when a PSTN call is received in the PSTN-to-Internet analog call connection interworking apparatus according to an embodiment of the present invention. In detail, when the caller dials the telephone number of the CO line to which the analog call connection interlock device 100 is connected through the PSTN 10, the number of rings generated on the CO line 14 is called in advance. When compared with the specified number of times registered for 210 (210) if the general phone 120, the hook off (212), the call is connected and can make a mutual call (214) and after the call, the general phone 120 is hooked on ( 216).

However, if the number of rings generated is more than the specified number of times registered for the call connection switching function in advance, the trunk line detection and the hook switch unit 106 are hooked off 220 and the trunk line transfer unit 105 is dd. '-ff' terminal is connected (225). The caller who hears the number call request signal 230 from the signal generator 103 as a guide voice or a beep tone dials the remote control number for the call connection.

The signal detector 104 detects the remote control signal transmitted by the caller (235), and when the received control signal is the Internet telephone access service number 240, the line switching unit 102 blocks the connection of the general telephone (250). The line detection and hook switch unit 101 hooks off the analog VoIP gateway line 24.

Then, when a dial tone is transmitted from the analog VoIP gateway line 24, the caller dials the called party's telephone number, and the analog call connection device 100 receives the dialing signal and receives the called party's telephone number or IP address. Is transmitted to the analog VoIP gateway line 24 (260). At this time, the IP address conversion function of the Internet telephone service provider having a function of converting an address between a phone number and an IP address for a call connection through the Internet, or directly using an IP address conversion function of the analog call connection interlock device 100. You can send the address.

In this way, the analog VoIP gateway 110 operates according to the general VoIP call connection procedure 265 and consists of a called party and a call path. After the call is completed, when the call is released (270), the analog VoIP gateway line 24 is in a recovery state and the hook on (275), and the line switching unit 102 is connected to aa '-bb' terminal to connect a general telephone (280) Recover. The trunk line switching unit 105 is restored to the connection between the dd'-ee 'terminal (285) and is restored to the trunk line hook-on (290) state.

In the operation flow when the remote control signal input error, in FIG. 2 presented as an embodiment, only the case where the remote control signal is an Internet telephone access service number is shown and the detailed remote control function will be described later.

When the remote control signal is detected 235, the received signal is compared with a pre-registered Internet telephone service number (240), and if it is different, it is determined to be an input error and the error number is compared with a predetermined number of predetermined registrations (245). If the redial request is made within the allowable error, but more than the allowable error, the trunk line switching unit 105 is restored to the connection between the dd'-ee 'terminals 285, and the trunk line 14 is restored to the hook-on 290 state.

3 is an operation control flowchart of providing a PSTN telephone service through a trunk line when receiving an internet telephone call in the PSTN-Internet analog call connection interworking apparatus according to an embodiment of the present invention. In detail, when the caller attempts to make a call through the Internet 20, the number of rings generated on the analog VoIP gateway line 24 in the destination region is compared with the designated number registered in advance by the call transfer function. If less, the description is the same as that described in Figure 2 and the description is omitted.

However, when the number of rings generated is more than a predetermined number of registrations registered in advance, the analog VoIP gateway line 24 is hooked off 320 by the line detection and hook switch unit 101, and the line switching unit 102 disconnects a general telephone connection. Block 325.

The caller who hears the number call request signal 330 from the signal generator 103 as a guide voice or a signal tone dials the remote control number for the call connection switching function.

The signal detecting unit 104 detects the remote control signal sent by the caller (335), and when the received control signal is the PSTN telephone connection service number 340, the trunk line switching unit 105 connects between the dd'-ff 'terminals. 350 and the trunk line detection and hook switch unit 106 hooks off the trunk line 14.

When the dial tone is sent from the CO line 14, the caller dials the called party's telephone number, and the analog call connection device 100 receives the called party's telephone number and transmits it to the CO line 14 (360). .

As such, it operates according to the general PSTN call connection procedure 365 and consists of the called party and the call. When the call is released after the completion of the call configuration (370), the trunk line 14 to the recovery state is hooked on 375 and the trunk line transfer unit 105 is restored to the connection between the dd '-ee' terminal (380). The line switching unit 102 connects aa'-bb 'terminal to recover the general telephone 120 (385) and the analog VoIP gateway line 24 is restored to the hook-on (390) state.

In the operation flow when the remote control signal input error, Figure 3 presented as an embodiment shows only the case that the remote control signal is a PSTN telephone access service number, and the detailed remote control function will be described later. When the remote control signal detection 335 compares the received signal with a PSTN telephone access service number registered in advance (340), if it is different, it is determined to be an input error and compares the error number with a predetermined number of preset registrations (345). If the request is re-sent within the allowable error, but if the allowable error or more, the line switching unit 102 connects 385 to the general telephone 120, and the analog VoIP gateway line 24 is restored to the hook on 390 state.

4 is a flowchart illustrating an operation control procedure for configuring an outgoing-to-called call between the PSTN and the Internet when the PSTN-Internet analog call connection interworking device is controlled by a dedicated call connection function according to an embodiment of the present invention. In detail, the caller 125 connected to the PSTN 10 configures a call path between the phones 125-1 connected to the destination PSTN 10-1 via the Internet 20. Hooking off 400 the calling phone 125 to generate a dial tone 404 according to the general PSTN call connection procedure 402 and a ring 408 accordingly when the caller dials 406. At this time, when the trunk line hook-off 410 is detected at the trunk line detection and hook switch unit of the outbound region analog call connection interlocking device 100, the call is configured with the calling telephone 125 (412). Thereafter, the trunk line switching device dd'-ff 'terminal of the calling area analog call connection device 100 is connected 414, and the incoming call number 125 is transmitted to the calling phone 125 (418). . Accordingly, when the caller dials the caller's telephone number (420), the signal detection unit receives and detects the dialing signal (422), and the analog VoIP gateway line is hooked off (424). The analog VoIP gateway 110 generates a dial tone according to the general VoIP call connection procedure 426 (428), and accordingly, the originating region analog call connection interlock device 100 analyzes the country code and area code among the stored called party phone numbers. To automatically transmit the Internet phone number or IP address of the analog VoIP gateway (110-1) registered to be connected to the analog call connection interlocking device installed in the country or region (430). For such automatic call forwarding function, Internet phone number or IP address for analog VoIP gateway connected directly with analog call interlocking device with dedicated call connection function that can be accessed by country and region in advance can be sent in advance. It must be registered in the connection interlock device 100. Thereafter, when a ring is generated (432) to the destination area analog call connection interworking device (100-1) by a general VoIP call connection procedure, the analog VoIP connection is established by hooking off an analog VoIP gateway line at the line detection and hook switch unit (434). A call path between interlocking devices is configured (436). Accordingly, when the called area analog call connection interlock device 100-1 transmits the called number calling request signal 438 to the calling area analog call connection interlock device 100, the calling area analog call connection interlock device 100 transmits (440). The telephone number excluding the country code and the area code is transmitted from the called party's phone number (442). Receiving area analog call connection interlock device (100-1) receives and stores the phone number (444), the connection between the dd'-ff 'terminal of the trunk line switch (446) and the trunk line hook-off (448) is made, the general PSTN According to the call connection procedure 450, a dial tone is generated 452 to the destination area analog call connection interlock device 100-1. Accordingly, when the signal detector sends and receives the phone number received and stored (444) (454), a ring is generated (456) to the destination telephone 125-1 connected to the PSTN (10-1), and at this time, the destination telephone 125 As the hook-off 458 of -1), the call area linkage interworking device 100-1 and the call path are configured 460, and the call-call destination call path is configured 462 as a whole.

The control function of the analog call connection interlock device according to the present invention is divided into basic function, additional function, IP address conversion function, control management function and input / output function, and the basic function is condition to be call connection switching function based on the number of rings. It is divided into call connection function and dedicated call connection function to operate exclusively as call connection function. Additional features include speed dial, call forwarding, conference call, auto answering, and address conversion between phone number and IP address. Multi-way call can be multi-party call with more than 4 characters. For this purpose, after configuring the calling area analog call interlocking device and priority call path, the caller dials the multi-party call control signal and 3 or 4 or more phone numbers. After the interlocking device receives and saves it, it automatically relays three or more characters and establishes a call path with multi-way communication. In addition, the control management function of the analog call connection interlock includes direct control function using a button attached to the outside of the analog call connection interlock device and the remote control function through the network for controlling various functions and adjusting necessary control information. The remote control functions include the automatic remote control function that controls the function of the control signal transmission after configuring the call path between the analog call connection interlocking devices, and the manual remote control function that uses the normal telephone connected to the user. The input / output function includes an input function for registering and changing a password, telephone number, IP address, speed dial or control function number according to the voice guidance, and an output function with a display function for displaying various information.

While the present invention has been shown and described with reference to certain preferred embodiments, the invention is not limited to the above embodiments and is within the scope of the invention without departing from the spirit of the invention. Various changes and modifications may be made by the possessor. The terms used to describe the embodiments of the present invention are used for the purpose of describing the present invention, and are not used to limit the scope of the present invention as defined in the claims or the claims.

The PSTN-Internet analog call interlocking device according to the present invention remotely controls a call interlocking device connected to a trunk line or a private exchange station by using a general telephone, a public telephone, and a mobile phone even in a place without an internet access point. Internet phone will be available through analog VoIP gateway and internet modem installed in the office. In addition, it is possible to remotely control the analog call connection device installed on the other side to make a call with another subscriber through the PSTN and to make a call connection with the mobile handset through a mobile phone network linked with the PSTN.

By using the repeated call connection function of the analog call connection interworking device, multi-party call with 4 or more characters is possible, and the call forwarding function of the call connected to the Internet phone is possible. In addition, if you make an international international call using a dedicated call access function, you can make a call using only the PSTN or mobile telephone network access fee of the relevant country or region. As such, when the PSTN-internet analog call connection device is used, an optimal call path can be configured via an Internet phone under the control of the user, resulting in innovative communication cost reduction.

Claims (4)

A PSTN-Internet analog call interconnection device having a mutual call connection function between an extension of a PSTN trunk line or a private exchange and an analog VoIP gateway. Inside the above analog call connection interlock device A circuit switching unit for disconnecting and interconnecting between a general telephone and a trunk line or an analog VoIP gateway; A trunk line switching unit for switching the trunk line connection of the PSTN; A trunk line detection and hook switch unit for detecting a ring occurrence number of trunk lines and having an automatic hook on / off function; A line detection and hook switch unit for detecting the number of ring occurrences of an analog VoIP gateway line and having an automatic hook on / off function; It is a function to transmit guide voice or beeping function for the convenience of function control, send out stored telephone number, IP address, remote control signal of analog call connection interlock device of counterpart, and feed current between CO line and analog VoIP gateway line. A signal generator having a function of transmitting a voice and a signal while intercepting each other; A signal detecting unit for detecting and storing a dialed remote control signal or a telephone number and cutting off a feed current between a trunk line and an analog VoIP gateway line; And a control unit comprising a program for controlling the functional unit, a memory in which various data are stored, and a CPU. In the PSTN-Internet analog call connection interworking device of the present invention, when receiving a PSTN call, it provides an Internet telephone connection service by interworking with an analog VoIP gateway, and when receiving an Internet call, connects to a trunk line to provide a PSTN telephone connection service. In It provides Internet telephone access service or PSTN telephone access service based on the caller's remote control signal for detecting the number of rings and call connection switching function that occurs for the call of the called party in the call connection procedure through the trunk line or the Internet. Call connection control procedure. When the PSTN-Internet analog call connection device of the present invention is controlled by a dedicated call connection function, in the procedure of configuring an outgoing-called call over the PSTN and the Internet, An operation control procedure in which the calling telephone establishes a call with the calling area analog call interconnecting device via the PSTN; An operation control procedure in which the calling area analog call access interlock device constitutes a call between the calling area analog call access interworking devices via the Internet; Call routing procedure, characterized in that the call destination analog call interlock device includes an operation control procedure to establish a call to the called party's phone via the called zone PSTN. The method of claim 3, wherein In the step where the calling area analog call interconnecting device configures a call between the calling area analog call connecting interworking devices via the Internet, Calling area analog call interlocking device analyzes country code and area code among calling phone numbers dialed by caller, and receives incoming call using internet VoIP number or IP address of analog VoIP gateway of the called area that is registered as prior access. Call channel configuration control procedure, characterized in that automatically establishes a mutual channel with the local analog call connection device.