JP3619008B2 - Ring tone type information transfer method and subscriber system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ringing tone type information transfer method for transferring ringing tone type information indicating the type of a calling side terminal generated by an exchange to a remote receiving side device accommodating the receiving side terminal, and a subscriber using the method This is related to the system.
[0002]
[Prior art]
Private branch exchanges provide various services to terminals. One of the services is an incoming signal (calling signal) that can identify the type (extension, external line, transfer) of the calling terminal by the ring tone to the receiving terminal. There is a ringtone identification service that supplies.
[0003]
[Problems to be solved by the invention]
However, the conventional ring tone identification service has been provided for a terminal accommodated directly in a private branch exchange, but a terminal located at a remote location and accommodated via a multiple transmission path, for example, ITU- Recommendation of T (International Telecommunication Union-Telecommunication Standardization Sector) 964 / G. It was not provided to terminals connected with the V5 interface of 965. In addition, the above-mentioned recommendation did not describe the ring tone identification. For this reason, there is a problem that such a terminal in a remote place cannot receive a ringtone identification service.
[0004]
The present invention solves such problems of the prior art, and provides a ring tone type information transfer method for realizing a ring tone identification service for a remote terminal connected to an exchange through a V5 interface, and a subscriber system using the method. The purpose is to provide a system.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention adds a ring tone type information indicating the type of the originating terminal generated by the exchange to the type signal message defined in the PSTN protocol of the V5 interface, A step of transferring the incoming signal message to which the ring tone type information is added to the terminal side device connected by the V5 interface, and extracting the ring tone type information from the incoming signal message transferred to the terminal side device in this step. And a step of generating an incoming signal based on the sound type information and outputting the incoming signal to the receiving terminal.
[0006]
The present invention also includes a step of adding ring tone type information indicating the type of the originating terminal generated by the exchange to the establishment message defined in the PSTN protocol of the V5 interface, and the ring tone type information is added in this step. A step of transferring the established message to the terminal-side device connected by the V5 interface, and extracting the ring tone type information from the established message transferred to the terminal-side device in this step, and receiving the incoming signal based on the ring tone type information. Generating and outputting to the receiving terminal.
[0007]
The present invention also provides an adding means for adding ringing tone type information indicating the type of the originating terminal generated by the exchange to an incoming signal message defined in the PS5 protocol of the V5 interface, and ringing tone type information by this adding means. And a transfer means for transferring the incoming signal message to which the message is added to the terminal side device connected by the V5 interface. The terminal side device extracts the incoming call tone type information from the incoming signal message transferred by the transfer means, and An incoming signal is generated based on the sound type information and is output to the called terminal.
[0008]
Further, the present invention provides an adding means for adding ring tone type information indicating the type of the originating terminal generated by the exchange to an establishment message defined in the PSTN protocol of the V5 interface, and the ring tone type information is added by this adding means. Transfer means for transferring the added establishment message to the terminal side device connected by the V5 interface, and this terminal side device extracts the ring tone type information from the establishment message transferred by the transfer means, and this ring tone type information Based on the above, an incoming signal is generated and output to the receiving terminal.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0010]
FIG. 1 is a block diagram showing an example of a subscriber system to which a ring tone type information transfer method according to the present invention is applied. In FIG. 1, only the signal processing system related to the present invention is shown, and the call system and the like are omitted. In FIG. 1, the private branch exchange 10 and a terminal side device 14 at a remote location are connected by a transmission line 12, and the private branch exchange 10 is in a state of calls of terminals 16 and 18 via the transmission line 12 and the terminal side device 14. Manage. Here, the private branch exchange 10 transmits the information from the call control unit 20 that controls the call and the information from the call control unit 20 to the transmission line 12 by time division multiplexing and the time division multiplexed information from the transmission line 12. And a PSTN signaling unit 22 for separating and sending them to the call control unit 20. The private branch exchange 10 may be a central office switch.
[0011]
The terminal-side device 14 time-division-multiplexes information from the analog ports 26 and 28 that control the terminals 16 and 18 and the information from the analog ports 26 and 28 based on information from the call control unit 20 and sends them to the transmission line 12. At the same time, the PSTN signaling unit 24 that separates the time-division multiplexed information from the transmission path 12 and sends it to the analog ports 26 and 28, and a predetermined incoming signal to the terminals 16 and 18 according to the instructions of the analog ports 26 and 28. A sound source unit 30 to be supplied. The terminal side device 14 can accommodate terminals other than the terminals 16 and 18.
[0012]
The PSTN signaling unit 22, the transmission path 12, and the PSTN signaling unit 24 are signal paths for transparently transferring analog line signal information such as calling, disconnection, and dialing between the call control unit 20 and the analog ports 26 and 28. In this embodiment, ITU-T Recommendation G. It conforms to the PSTN (Public Switched Telephony Network) protocol of V5.2 interface by 965. The PSTN signaling units 22 and 24 manage this signal path, assign a signal path to one time slot of a frame composed of 32 time slots, and transfer the signal information of each terminal by time division multiplexing. Thereby, the call control unit 20 can manage the call state of each terminal accommodated in the terminal-side device 14. Note that the above-mentioned path is the ITU-T recommendation G. It may conform to the V5.1 interface according to 964.
[0013]
Further, the message (layer 3) for transferring signal information and the like through the above-described signal path is configured according to the PSTN protocol of the V5.2 interface. FIG. 2 shows the structure of an incoming signal (cadence-ringing) message for transferring an incoming signal (calling signal). In FIG. 2, the protocol identifier 200 indicates that the message is a message by the V5.2 interface, the layer 3 address 202 indicates the address of the signal information transfer destination, for example, the address of the analog ports 26 and 28, and the message type Reference numeral 204 indicates that the message is a signal message for transferring signal information or the like.
[0014]
The information element 206 is information related to a sequence number for determining whether or not signal information is lost, and the information element 208 is information related to an incoming signal. The information element 208 includes an information element identifier indicating that the information element is related to an incoming signal, an information element length indicating the length of the information element, and a part including a type. The ITU-T recommendation does not describe any information that should be set for this type. Therefore, in this embodiment, ringing tone type information indicating the type of the transmitting terminal is set in this type and transferred from the private branch exchange 10 to the terminal side device 14, and the ringing tone is transmitted to the terminal accommodated in the terminal side device 14. Provides identification services.
[0015]
Next, the operation of the subscriber system shown in FIG. 1 will be described.
[0016]
When the call control unit 20 of the private branch exchange 10 detects a call from a terminal (calling side terminal) (not shown), the call control unit 20 analyzes the type (extension, external line, transfer) of the calling side terminal and determines in advance corresponding to the type. The received ring tone type information is generated. For example, when the dial information of the terminal 16 is received, the dial information and the ring tone type information are output to the PSTN signaling unit 22. When the PSTN signaling unit 22 receives the dial information and the ring tone type information from the call control unit 20, the PSTN signaling unit 22 generates an establishment (ESTABLISH) message in a format defined in the V5.2 interface.
[0017]
FIG. 3 shows the structure of this ESTABLISH message. In FIG. 965, the layer 3 address 302 indicates the address of the analog port 26 in which the terminal 16 is accommodated, and the message type 304 indicates that the signal information to be transferred is ESTABLISH information. ing. The address of the analog port 26 is determined by dial information for the terminal 16. The PSTN signaling unit 22 transfers the generated ESTABLISH message to the PSTN signaling unit 24 of the terminal side device 14 via the transmission path 12.
[0018]
When the PSTN signaling unit 24 receives the ESTABLISH message from the transmission line 12, the PSTN signaling unit 24 notifies the analog port 26 that there is a call to the terminal 16. Based on this notification, the analog port 26 reverses the polarity of the call current supplied to the terminal 16 to make it reverse polarity. As a result, calling from the terminal 16 becomes impossible, and an incoming call reservation is established. When the polarity of the call current is reversed, the analog port 26 notifies the PSTN signaling unit 24 that the incoming call reservation for the terminal 16 has been completed.
[0019]
When receiving this notification, the PSTN signaling unit 24 generates an establishment confirmation (ESTABLISH ACK) message in a predetermined format and sends it to the PSTN signaling unit 22 of the private branch exchange 10 via the transmission path 12. When the PSTN signaling unit 22 receives the ESTABLISH ACK message from the transmission line 12, it generates an incoming signal message having the configuration shown in FIG. 2, and sets the ring tone type information in a portion called the type of the information element 208. Set. The PSTN signaling unit 22 transfers the generated incoming signal message to the PSTN signaling unit 24 of the terminal side device 14 via the transmission path 12.
[0020]
When receiving the incoming signal message from the transmission line 12, the PSTN signaling unit 24 notifies the analog port 26 to output the incoming signal to the terminal 16, and sends the incoming call tone type information. The analog port 26 instructs the sound source unit 30 to output to the terminal 16 a ringing tone signal determined in advance corresponding to the ringing tone type information. The sound source unit 30 outputs a corresponding incoming signal to the terminal 16 according to the instruction of the analog port 26, and the terminal 16 sounds a ringing tone according to the incoming signal. Thereby, the user can identify the type of the caller terminal. For example, the ring tone can identify whether the other party is calling from outside or from inside the company. In the case of outside the company, the company name is given after answering. It becomes possible to tell.
[0021]
In the above-described embodiment, the PSTN signaling unit 22 receives the ESTABLISH-ACK message returned from the PSTN signaling unit 24, confirms that the incoming call reservation for the terminal 16 is completed, and then displays the ring tone type information. 2 is added to the incoming signal message 2 and transferred to the PSTN signaling unit 24. However, if incoming call reservation is not required, ringtone identification information can be added to the ESTABLISH message. Note that in the V5.2 interface, it is allowed to add only one information element to the ESTABLISH message.
[0022]
In this case, when the PSTN signaling unit 22 of the private branch exchange 10 receives the dial information and the ring tone type information from the call control unit 20, the PSTN signaling (Cadened-ringing IE) message to which the ring tone type information shown in FIG. Generate. This ESTABLISH (Cadened-ringing IE) message is obtained by adding the information element 406 to the ESTABLISH message shown in FIG. 3, and the protocol identifier 400, the layer 3 address 402, and the message type 404 are respectively shown in FIG. This is the same as the message protocol identifier 300, the layer 3 address 302, and the message type 304. The information element 406 is information related to the incoming call signal, and the incoming call tone type information indicating the type of the transmitting terminal is set in a portion called type.
[0023]
The PSTN signaling unit 22 transfers the generated ESTABLISH (Cadened-ringing IE) message to the PSTN signaling unit 24 of the terminal-side device 14 via the transmission path 12. When the PSTN signaling unit 24 receives an ESTABLISH (Cadened-ringing IE) message from the transmission line 12, the PSTN signaling unit 24 notifies the analog port 26 that a call has been made to the terminal 16, and sends an incoming signal to the terminal 16. Notification of output is made, and ringtone type information is sent out. Based on this notification, the analog port 26 reverses the polarity of the call current supplied to the terminal 16 to make it reverse polarity. As a result, calling from the terminal 16 becomes impossible, and an incoming call reservation is established.
[0024]
Next, the analog port 26 instructs the sound source unit 30 to output a predetermined incoming signal corresponding to the incoming call tone type information to the terminal 16. The sound source unit 30 outputs a corresponding incoming signal to the terminal 16 according to the instruction of the analog port 26, and the terminal 16 sounds a ringing tone according to the incoming signal. Thereby, the user can identify the type of the caller terminal.
[0025]
【The invention's effect】
As described above, according to the present invention, the exchange side adds the ringing tone type information of the calling side terminal to the incoming signal message or establishment message defined by the PSTN protocol of the V5 interface and is connected at the remote location connected by the V5 interface. Since the terminal side device generates an incoming signal based on the ring tone type information and sends the incoming signal to the incoming side terminal, the incoming side terminal in the remote location can also receive the ring tone identification service. Can receive.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an embodiment of a subscriber system to which a ring tone type information transfer method of the present invention is applied.
FIG. 2 is a configuration diagram of an incoming signal message by a V5.2 interface (PSTN Protocol).
FIG. 3 is a configuration diagram of an establishment message by a V5.2 interface (PSTN Protocol).
FIG. 4 is a configuration diagram of an establishment message including ringtone identification information.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Private branch exchange 12 Transmission path 14 Terminal side device 16, 18 Terminal 20 Call control part 22, 24 PSTN signaling part 26, 28 Analog port 30 Sound source part

Claims (4)

Adding ringing tone type information indicating the type of the originating terminal generated by the exchange to the incoming signal message defined in the PSTN protocol of the V5 interface;
Transferring the incoming call signal message to which the ring tone type information is added in the step to a terminal side device connected by a V5 interface;
Extracting the incoming call tone type information from the incoming call signal message transferred to the terminal side device in the step, generating an incoming call signal based on the incoming call tone type information, and outputting the incoming call signal to the incoming side terminal. Ringtone type information transfer method. Adding ringtone type information indicating the type of the originating terminal generated by the exchange to an establishment message defined in the PSTN protocol of the V5 interface;
Transferring the establishment message to which the ring tone type information is added in the step to a terminal side device connected by a V5 interface;
Extracting the ring tone type information from the establishment message transferred to the terminal side device in the step, generating an incoming signal based on the ring tone type information, and outputting the incoming signal to the terminal on the receiving side. Ringtone type information transfer method. Adding means for adding ringing tone type information indicating the type of the originating terminal generated by the exchange to the incoming signal message defined in the PSTN protocol of the V5 interface;
Transfer means for transferring the incoming call signal message to which the ring tone type information is added by the adding means to a terminal side device connected by a V5 interface;
The terminal side device extracts ringing tone type information from the incoming call signal message transferred by the transfer means, generates an incoming call signal based on the ringing tone type information, and outputs it to the receiving side terminal Human system. Additional means for adding ring tone type information indicating the type of the originating terminal generated by the exchange to the establishment message defined in the PSTN protocol of the V5 interface;
Transfer means for transferring the establishment message to which the ring tone type information is added by the addition means to a terminal side device connected by a V5 interface,
The terminal side device extracts ring tone type information from the establishment message transferred by the transfer means, generates an incoming signal based on the ring tone type information, and outputs it to the call side terminal System.

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