JP2001028632A - Method and device for relay private branch of exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive signal other than a voice signal at necessary timing from a voice speech path such as a selection signal transmission available tone, a call signal tone, and a speech tone by a private branch of exchange at a caller side in a system where an inter-network selection signal is transmitted by using the voice speech path. SOLUTION: Upon receipt of a selection signal from a caller side private branch of exchange by a trunk circuit of conducting inter-network interface (reception), the trunk circuit and the received selection signal retrieve a connection digit number registered in a selection pattern memory (step 1). Then the trunk circuit to transmit the inter-network interface is acquired (step 2) and a selection signal is transmitted to the trunk circuit (step 3). Then matching discrimination between a transmission digit number (x) of the selection signal and a connection digit number X indexed in the step 1 is made (step 4), and when they are coincident, a voice exchange switch connects a trunk circuit conducting inter-network interface (reception) to a trunk circuit conducting inter-network interface (transmission).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay private branch exchange method for transmitting an inter-network selection signal using a voice communication path in a relay private connection such as a private network, and a relay private branch exchange apparatus.

[0002]

2. Description of the Related Art Conventionally, as a relay switching system for transmitting a selection signal between networks using a voice communication path, a method of connecting a communication path after capturing an inter-network interface, and a method of communicating after a fixed time after all selection signals are transmitted. A method for connecting roads is known.

FIG. 3 is a configuration diagram showing an outline of a transit switching network such as a private network. As shown in the figure, the relay private branch exchange includes a trunk circuit (TRK-T1) 5 for inter-network interface (reception), a trunk circuit (TRK-T2) 7 for inter-network interface (transmission), and voice exchange. (TSW-T) 6.

The private branch exchange on the transmitting side includes an extension telephone (TEL-O) 1, an interface circuit (LC-O) 2 for the extension, and a switch (TSW) for exchanging voice.
-O) Trunk circuit (T
RK-O) 4.

Similarly, the private branch exchange on the receiving side includes an extension telephone (TEL-R) 11, an interface circuit (LC-R) 10 for extension and a switch (T-R) for exchanging voice.
SW-R) 9 and a trunk circuit (TRK-R) 8 for inter-network interface.

[0006] In the first transit switching system, the transit private branch exchange transmits a selection signal transmitted from a trunk circuit (TRK-O) 4 for interfacing the private branch exchange on the originating side to an interwork interface (TRK-O). A switch (TSW-) for exchanging voice when a trunk circuit (TRK-T1) 5 for performing reception) receives a trunk circuit (TRK-T2) 7 for performing inter-network interface (transmission).
T) Connect at 6.

[0007] In the second transit switching system, the transit private branch exchange transmits a selection signal transmitted from a trunk circuit (TRK-O) 4 for interfacing the originating private branch exchange to an internetwork interface (TRK-O). The trunk circuit (TRK-T1) 5 which performs the reception) receives the trunk circuit (TRK-T2) 7 which performs the inter-network interface (transmission), and transmits the selection signal to the inter-network interface of the private branch exchange on the receiving side. The connection is made by a switch (TSW-T) 6 for exchanging voice when all the selection signals are transmitted to the trunk circuit (TRK-R) 8 to be executed or after a fixed time.

[0008]

In the above-mentioned conventional relay switching system for transmitting an inter-network selection signal using a voice communication channel, the communication channel is connected after capturing the inter-network interface of the relay private branch exchange, or In this method, a communication path is connected after a certain period of time after all the selection signals are transmitted. These have the problem that signals other than voice, for example, selectable signal selectable sound, ringing tone, busy tone, and the like cannot be received from the voice communication channel at the time required by the private branch exchange on the transmitting side.

The present invention solves the above-mentioned conventional problem. In a system for transmitting an inter-network selection signal using a voice communication channel, a signal other than voice from the voice communication channel, such as a selectable signal transmission sound, It is an object of the present invention to provide a relay private branch exchange method and apparatus capable of receiving a call signal tone, a busy tone, and the like at a required time by a private branch exchange device on the transmission side.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of transmitting all selection signals after a selection signal between networks is transmitted using a voice communication path during inter-network relay connection. By connecting the call path in advance, the voice call path can be connected during the selection signal transmission after the inter-network interface of the relay private branch exchange has been captured, and the non-voice signal can be sent to the private branch exchange on the calling side early. Becomes

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A communication path connection method according to a first aspect of the present invention is a communication path connection method for a private branch exchange having a network interface circuit. It is characterized in that after the selection signal between the networks is transmitted, the communication path is connected before all the selection signals are transmitted. According to the above configuration, by connecting the voice communication path during the selection signal transmission after capturing the inter-network interface of the relay private branch exchange device, a signal other than a voice signal to the originating private branch exchange device, for example, a selectable signal transmission possible sound, A ringing tone, busy tone, and the like can be transmitted early.

According to a second aspect of the present invention, there is provided a relay private branch exchange having an interface circuit for a network, the relay private branch exchange having a network interface circuit, which number of digits after transmission of the selection signal should be determined in advance. A selection pattern memory to be stored;
When a selection signal between networks is transmitted using a voice communication path during inter-network relay connection, it is determined whether the number of digits stored in the selection pattern memory matches the number of digits of the transmitted selection signal. And a voice exchange switch for connecting a voice communication path when they match. According to the above configuration, since the number of digits to be transmitted of the selection signal matches the number of digits stored in the selection pattern memory, the originating user of the private branch exchange on the originating side can change the private branch exchange on the originating side at any time. Signals other than voice, for example, selectable signal transmittable sound, ringing signal sound, busy sound, and the like can be transmitted early.

An embodiment of the present invention will be described below with reference to the drawings. The relay private branch exchange of the present invention is applied to a relay switching network such as the private network shown in FIG. 3, and the basic configuration is the same as that of FIG.

FIG. 1 is a flowchart showing the operation of the relay private branch exchange after receiving the selection signal from the private branch exchange on the transmitting side according to the embodiment of the present invention. FIG. 2 is an explanatory diagram of a selection pattern memory included in a storage unit (not shown) of the relay private branch exchange according to the present invention.

In the present invention, as shown in FIG. 1, when the selection signal is received from the originating private branch exchange in the trunk circuit (TRK-T1) 5 for inter-network interface (reception) shown in FIG. In step S1, the number of connection digits registered in the selection pattern memory shown in FIG. 2 is indexed based on the received selection signal and the trunk circuit (TRK-T1) 5 for inter-network interface (reception). For example, the connection digit number X is indexed from the received selection signal αβγ.

Next, in step S2, a trunk circuit (TRK-T2) 7 for performing an inter-network interface (transmission) is captured. Then, in step S3, this trunk circuit (TR
KT-T2) 7 is sent a selection signal.

In step S4, a match is determined between the number x of digits to be transmitted of the selection signal and the number X of connection digits indexed in step S1. If they match here (S4-YES),
In step S5, the trunk circuit (TRK-T1) 5 for performing the inter-network interface (reception) and the trunk circuit (TRK-T2) 7 for performing the inter-network interface (transmission) are switched using the voice exchange switch (TSW-T) 6. Connecting. This selection signal returns to step S3 and continues until the number of transmitted digits x matches the number of connected digits X (S4-NO).

According to the above configuration, it is possible to connect the voice communication path of the relay private branch exchange at any time according to the selection signal of the calling side user. During the transmission of Therefore, a selectable signal transmission possible tone, a ringing tone, a busy tone, and the like can be received by the private branch exchange on the transmitting side at a necessary time.

Table 1 shows a comparison between the embodiment of the present invention and the prior art.

[0020]

[Table 1] By the way, the originating private branch exchange device and the relay private branch exchange device described in the above embodiment are directly connected by a trunk of the inter-network interface (see FIG. 3), and a configuration in which a voice compression device or the like is inserted between them. In this case, it is also possible to connect the voice communication path of the relay private branch exchange to the voice compression device according to the instruction of the originating user, and a selection signal selectable sound, a ringing tone, a busy tone, etc. are required. It can be connected at any time.

[0021]

According to the first aspect of the present invention, a communication path can be connected while transmitting a selection signal between networks using a voice communication path, and relaying is performed according to an instruction of a calling user. It becomes possible to connect the voice communication path of the private branch exchange, and the private branch exchange on the transmitting side can easily receive the selectable signal transmission sound, the ringing tone, the busy tone, and the like when necessary.

In the relay private branch exchange according to the second aspect, since the voice communication path is connected when the number of digits stored in the selection pattern memory and the number of digits to be transmitted of the selection signal match, the selection signal of the calling side user is provided. It is possible to connect the voice communication path of the relay private branch exchange according to the instruction of the originating user, and selectable signal transmission possible sound, ringing tone, busy tone, etc. can be controlled by the originating private exchange. There is an effect that reception can be easily performed at a necessary time.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating the operation of an embodiment of a relay private branch exchange according to the present invention.

FIG. 2 is an explanatory diagram of a selection pattern memory included in the relay private branch exchange of the present invention.

FIG. 3 is a configuration diagram showing an outline of a transit switching network such as a private network.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Extension telephone of originating private branch exchange 2 Extension interface circuit of originating private branch exchange 3 Voice exchange switch of originating private branch exchange 4 Trunk circuit for inter-network interface of originating private branch exchange 5 Network of relay private branch exchange Trunk circuit that performs inter-interface (reception) 6 Voice exchange switch of transit private branch exchange 7 Trunk circuit that performs inter-network interface (transmission) of transit private exchange 8 Trunk circuit that performs inter-network interface of destination private branch exchange 9 Inbound Voice exchange switch of local private branch exchange 10 Extension interface circuit of private branch exchange 11 Receiving private branch exchange telephone

Claims (2)

[Claims] 1. A method for connecting a trunk line in a trunking private branch exchange having a network interface circuit, comprising the steps of: A relay private branch exchange method, wherein a call path is connected before a selection signal is transmitted. 2. A relay private branch exchange having a network interface circuit, comprising: a selection pattern memory for storing in advance what number of digits after a selection signal is to be connected to a voice communication path; When a selection signal between networks is transmitted using a voice communication path, it is determined whether the number of digits stored in the selection pattern memory matches the number of digits of the transmitted selection signal. A relay private branch exchange comprising a voice exchange switch for connecting a communication path.