JP2000308103A - Isdn sub-address designation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To designate an incoming call from a non-ISDN terminal to an ISDN terminal through address by accumulating information dialed by the non-ISDN terminal in a register memory, reading dial information accumulated in the register memory, analyzing the presence or absence of a sub-address and compiling the sub-address into the sub-address regulated by ISDN. SOLUTION: A non-ISDN terminal extension interface package 10 storing a non-ISDN telephone set 50 and an ISDN extension interface package 40 storing ISDN terminals A 54, B 55 and C 56 are constituted of control circuits 11 and 41 and terminal control programs TC 12 and 42 controlling the circuits. The interface packages share the low-order layers of a communication control stack and CPU 3 sharing high-order layers receives information that the non- ISDN telephone set 50 dials and transmit ISDN messages to the extension interface packages storing the ISDN terminals A, B and C 54-56.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange system for accommodating an ISDN terminal or connecting to an ISDN network.
Subaddressing method.

[0002]

2. Description of the Related Art Conventionally, a method of designating a subaddress assigned to an ISDN terminal is disclosed in Japanese Patent Laid-Open No. 6-11301.
As described in Japanese Patent Laid-Open No. 4, the dial number string is divided into three elements, the first element corresponding to the ISDN public network transmission identification special number, and the second element corresponding to the previously registered public network subscriber number. There was a method of dialing the destination subaddress as the third element of the destination short code.

[0003] However, this is a method of designating a destination subaddress from a non-ISDN telephone, but cannot be used unless a special number and abbreviated code-telephone number conversion table is created in advance in the exchange as connection destination information.
Only the outside of the local exchange (public network or leased line network) is targeted as a connection destination, and connection to a terminal accommodated in the local exchange is not considered.

[0004]

For example, a private branch exchange (P
BX) must accommodate non-ISDN terminals such as analog interface telephones and digital interface telephones and terminals such as ISDN interface telephones and realize interconnection.

In a system configuration in which a plurality of ISDN terminals are multi-connected to one interface as specified in ISDN, when a specific one of the plurality of terminals is designated and called, the calling terminal must first call the terminal. This is performed by designating a sub-address set for each receiving terminal. In this case, the originating terminal is ISDN
There is a problem that this connection cannot be realized because only the terminal is possible and there is no means for designating a sub-address from other non-ISDN terminals.

[0006] It is an object of the present invention to provide a non-ISDN
It is an object of the present invention to provide a system that enables incoming calls to a DN terminal by specifying a subaddress.

[0007]

In order to achieve the above object, the present invention relates to a means for storing information dialed by a non-ISDN terminal in a register memory in an electronic switching system controlled by a storage program control method. Means for reading dial information stored in the register memory and analyzing the presence or absence of a sub-address; and, if there is a sub-address, means for editing the sub-address in the register memory into a sub-address information element specified by ISDN. I do.

[0008]

FIG. 1 is a block diagram showing the configuration of an exchange system according to an embodiment of the present invention. As shown in FIG. 1, a switching system according to the present invention includes a non-ISDN telephone 50 and a non-ISDN
Interface extension package 10 and PC-LA
TCP / IP interface package 20 for accommodating N in an exchange, and I /
SDN trunk interface package 30, ISD
ISDN for accommodating N terminals 54 to 56 in exchange 1
It comprises an extension interface package 40, an exchange switch 2 for providing a communication path of an ISDN network exchange, and a central processing unit 3 for performing a call control process for controlling these hardware.

FIG. 2 shows a non-ISDN telephone 50 and an ISD
FIG. 3 is a block diagram for explaining an interface package accommodating N terminals 54 to 56 and an outgoing connection processing function of a central processing unit 3 using a sub-address designation dial.

Non-ISD to accommodate non-ISDN telephone 50
IS accommodating the N extension interface package 10 and the ISDN terminals A (54), B (55), C (56)
The DN extension interface package 40 includes the control circuit 1
Terminal control program TC for controlling the circuit
(12, 42).

These interface packages share the lower layers (layers 1 and 2) of the communication protocol stack. On the other hand, the central processing unit 3 sharing the upper layer (layer 3 or more) receives information dialed by the non-ISDN telephone 50 by inter-processor communication with the interface package 10 and, via each control unit, receives the information on the receiving side. I
An ISDN message is transmitted to the ISDN extension interface package 40 accommodating the SDN terminals 54 to 56.

The central processing unit 3 receives dial information from the non-ISDN extension interface package 10 and translates the dialed digits in response to a request from the dialed digit accumulation controller 5 and a dialed digit accumulation controller stored in the register memory 4. It comprises a digit translation / routing control unit 6 for executing routing according to the result, an ISDN message editing control unit 7 for editing an ISDN message for the ISDN extension interface package 40, and an exchange control unit 8 for performing exchange control other than these control units. . I
The SDN message editing control unit 7 analyzes the presence or absence of the sub-address designation code in the register memory 4 and, based on the analysis result, the called number information element editing unit 7b which is an information element defined by ISDN , And a destination sub-address information element editing unit 7c.

FIG. 3 shows a non-ISDN telephone set 50 receiving ISD
FIG. 5 is a diagram showing a dialing method for designating N sub-addresses. The extension number of the non-ISDN telephone 50 is 300
0, the extension number of ISDN telephones 54-56 is 4000,
And ISDN telephones A (54), B (55), C (5
The sub-addresses registered in 6) are 10, 2 respectively.
0, 30.

Item No. 1 is a dialing method using a conventional general method without specifying a subaddress. That is, only the extension number "4000" of the other party is dialed. In this case, the ISDN telephones A (54), B (55), C (5
6) A ringing tone is sent out to all, and it is possible to make a call with the telephone that answered the earliest, so that a call specifying the other party cannot be made.

Item No. 2 is a method 1 for specifying a subaddress. In this example, “*” is used as a subaddress designation code added after the destination extension number. To specify B (55) among the multi-connected ISDN terminals, dial "*" after the extension number, and then dial the subaddress "20" of the other party.

Item No. 3 is a method 2 for specifying a subaddress.
It is. This is a method of adding a dial start code and a dial end code (“#” is used in this example) before and after the dial described in item No. 2 (method 1).

In general, the exchange system translates the received dialed digits, receives dialed digits of the number of digits to be received obtained from the translation result, and determines a connection destination.

In the method of item No. 1, since 4xxx is all four digits, the number translation data is created with four digits for both the minimum and maximum number of received digits.

In the method of item No. 2, it is necessary to be able to receive both the case where only 4xxx is dialed (four digits) and the case where 4000 * 20 is dialed (seven digits). For this reason, the number translation data is created as the minimum number of received digits (four digits) and the maximum number of received digits (seven digits). If only 4xxx is dialed in this method, the reception completion determination is made based on the reception completion timing conventionally used in the switching system.

In the method of item No. 3, the minimum and maximum number of received digits are four digits in the same manner as in item No. 1 so that a 4 ×× (four digits) dial can be received. When a subaddress is dialed by this method, a start code and an end code are added to the beginning and end of the dial, respectively, so that a dial digit sandwiched between these codes is received. That is, the dial digit accumulation control is performed without using the number of received digits of the number translation data.

FIG. 4 is a flowchart showing the function of the dial digit accumulation control (5) of the method 1 described with reference to FIG.

The dial information of the non-ISDN telephone (50) transmitted by the inter-processor communication is received from the TC (12) of the non-ISDN extension interface package.
If the dial digits for the maximum number of received digits (seven digits in this example) have already been received, the process ends without any processing. Otherwise, store the received dialed digit in the register memory. Next, it is determined whether the translation of the dialed digits has been completed. If not, the dial digit translation process is started and terminated.

FIG. 5 is a flowchart showing the function of the dial digit accumulation control unit 5 in the method 2 described in FIG.

The dial information of the non-ISDN telephone 50 transmitted by the inter-processor communication is received from the TC (12) of the non-ISDN extension interface package. If the dial digits for the maximum number of received digits (four digits in this example) have already been received, the process ends without any processing. Otherwise, store the received dialed digit in the register memory. It is determined whether the received information is the first digit, and if it is the first digit, the sub address reception flag is initialized to “0”. Next, a dial start code (# in this example) specified in the exchange system is determined in advance, and in the case of the dial start code, the subaddress reception flag is set to "1" and the processing is terminated. If it is not the dial start code, that is, if the "other party extension number" information is received, it is determined that the translation of the dialed digits has been completed.
Otherwise, the dial digit translation process is started based on the contents of the register memory, and the process ends. On the other hand, if the received information is not the first digit, it is determined whether or not the subaddress reception flag is "0". If it is equal to "0", that is, if the subaddress is not dialed, it is merged into a dial digit translation completion determination process. When the sub-address reception flag is = 1, that is, when dialing a sub-address, a dial end code (# in this example) specified in the exchange system is determined in advance. If not, complete. In the case of the dial end code, the first dial start code and the last dial end code are deleted from the dialed digit information stored in the register memory, and the "destination extension number +
* Only the "subaddress" information is used, dial number translation processing is started and terminated.

FIG. 6 is a flowchart showing the functions of the called number information element editing section 7b and called sub address information element editing section 7c in the ISDN message editing section 7 to be transmitted to the ISDN telephones 54 to 56, and the analysis section 7a relating to the processing. It is shown by.

The input information of this process is dial number information stored in the register memory 4, and the output is ISD
A destination number information element and a destination sub address information element added to the N message.

First, it is determined whether or not there is a sub-address designating code in the dial number information in the register memory 4. If not, edit the dialed number in the register memory into the called number information element and terminate. If there is a sub-address designating code, the front part of the code is edited as a called number information element, and the rear part is edited as a called sub-address information element, and the process ends.

[0028]

As described above, according to the present invention,
In the connection from the non-ISDN telephone to the ISDN terminal, after dialing the other party number from the non-ISDN telephone, dial the destination subaddress designation code and then the subaddress of the other party's ISDN terminal to transmit the ISDN call setting (SETUP) to be transmitted to the destination ISDN terminal. By setting the subaddress after the dialed destination subaddress designating code in the destination subaddress information element in the message, it is possible to easily realize the outgoing connection by the ISDN destination subaddress designation from the non-ISDN terminal.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an exchange system according to an embodiment of the present invention.

FIG. 2 is a block diagram for explaining an outgoing connection processing function from a non-ISDN telephone to an ISDN telephone by an ISDN subaddress.

FIG. 3 is a diagram showing a sub-address dialing method for a non-ISDN telephone.

FIG. 4 is a flowchart showing an outline of a processing procedure of a digit accumulation control unit according to an ISDN sub-address dialing method 1;

FIG. 5 is a flowchart illustrating an outline of a processing procedure of a digit accumulation control unit according to an ISDN sub-address dialing method 2;

FIG. 6 is a flowchart illustrating an outline of a processing procedure of an ISDN message editing unit;

[Explanation of symbols]

 Reference Signs List 1 exchange, 2 exchange switch, 3 central processing unit, 4 register memory, 5 dial digit accumulation control unit, 6 numeric translation / routing control unit, 7 ISDN message editing control unit, 8 exchange control unit Reference numeral 10: Non-ISDN extension interface package, 40: ISDN extension interface package, 50: Non-ISDN telephone, 54 to 56: ISDN telephone.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yoshiaki Asanbo 6-81, Onoe-cho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi Software Engineering Co., Ltd. (72) Miko Sekimoto 6, Onoe-cho, Naka-ku, Yokohama-shi, Kanagawa 81-chome, Hitachi Software Engineering Co., Ltd. 216 Totsukacho F-term in Hitachi, Ltd. Communication Systems Division (Reference) 5K027 CC02 HH21 5K049 BB02 CC09 EE01 GG11 5K051 CC04 HH18

Claims (3)

[Claims] 1. An electronic switching system of a stored program control system accommodating a non-ISDN terminal and an ISDN terminal,
Means for storing information dialed by a non-ISDN terminal in a register memory; means for reading dial information stored in the register memory to analyze the presence or absence of a sub-address; A method for designating an ISDN sub-address, comprising: means for editing a sub-address information element defined by ISDN. 2. A method according to claim 1, wherein a dialing method for a non-ISDN telephone as a calling terminal uses a subaddress designating numeral (or code) indicating that a subaddress is to be dialed following a destination telephone number. ISDN subaddressing method. 3. The method according to claim 1, wherein the switching system receives dial information from the calling telephone and terminates the storing process by using a dial start digit (or code) and a dial end digit (or code) before and after dialing, respectively. Or a code) to recognize the end.