KR0171825B1 - Station call method of keyphone system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a direct calling method of an integrated information communication network key phone system.

2. The technical problem to be solved by the invention

The present invention provides a direct extension method of an ISDN key phone system.

3. Summary of Solution to Invention

Sub-addresses that designate specific terminals on a point-to-multipoint point in an integrated information and telecommunication network system are mapped to extension or extension group numbers, greeting messages, release messages, and caller numbers of unanswered call lines in key phone systems. A direct call method comprising: a first step of checking whether an incoming setup message is received from an outside, a second step of checking whether a sub address exists in the received setup message when a setup message is received, and If there is an address, a third step of checking whether there is an extension that matches the subaddress; and if there is an extension that matches the subaddress, and the status is 'free', a greeting message of the corresponding station is transmitted to the calling party, and the sub If there is an extension that matches the address but is 'busy', the caller number in the setup message If present, the caller number is stored in memory and the general trunk line incoming service is performed. If there is an extension that matches the subaddress, but the status is 'missed', the call is connected and the missed message is sent to the calling party. After the call is released and the caller number exists in the setup message, the caller number is stored in a memory.

4. Important uses of the invention

Used to directly call an extension of the ISDN keyphone system from outside.

Description

Direct call method of integrated information communication network key phone system

1 is a block diagram of a sub-address related table according to an embodiment of the present invention.

2 is a block diagram of a trunk line-related UUI message table according to an embodiment of the present invention.

3 is a block diagram of a function code related table according to an embodiment of the present invention.

4 is a flowchart illustrating a process of directly calling an extension of an integrated IT network key phone system according to an exemplary embodiment of the present invention.

The present invention relates to a direct call method of an extension of a keyphone system in a communication system, and more particularly, to a direct call method of an extension of a keyphone system that can be connected to a comprehensive information communication network (hereinafter referred to as ISDN).

Until now, the key phone system has been mainly connected to the public switched network (PSTN), but the number of subscribers using the ISDN line is increasing and the display function of the terminal is expected to be improved. Development is urgently needed.

When using general key phone system, DID line has been used to call extension directly or using additional equipment such as AA, Voice Mail System, etc. This calling method cannot be applied to ISDN key phone system as it is. Because.

It is therefore an object of the present invention to provide a direct extension method of an ISDN key phone system.

The present invention for achieving the above object is an extension or extension group number, greeting message, release message and non-response in the key phone system sub-address that serves to designate a specific terminal on the point-to-multipoint in the integrated information communication network system A method of directly calling an extension by mapping a caller number of a called trunk line, the method comprising: a first step of checking whether an incoming setup message is received from the outside; and if a setup message is received, whether a subaddress exists in the received setup message. A second process of checking whether there is a sub-address, a third process of checking whether there is an extension that matches the sub-address, and an extension corresponding to the sub-address, and a greeting of the extension if the state is 'free' Send a message to the calling party, and if there is an extension that matches the subaddress, If the calling party number exists in the setup message, the calling party number is stored in the memory and the general trunk line incoming service is performed. After the message is sent, the call is released after a certain time, and if the caller number exists in the setup message, the caller number is stored in the memory.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, there are many specific details such as specific numbers related to addresses, extensions, or trunk lines, etc., which are provided to help a more general understanding of the present invention, and the present invention may be practiced without these specific details. It will be obvious to those of ordinary skill in the art. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a diagram illustrating a configuration of a table of subaddresses according to an embodiment of the present invention.

When adding a basic rate interface (BRI) and a primary rate interface (PRI) card to a key phone system to service an ISDN line, a subaddress is used to specify a specific terminal on a point-to-multipoint point. . Therefore, in the present embodiment, the sub address is mapped to the extension number or the extension group number in the key phone system as shown in FIG. 1 so that a specific extension can be directly called from the outside. The caller number of the subaddress, the extension or the group of the station, the greeting message, the release message, and the unanswered call line is stored as in the following example.

FIG. 2 is a diagram illustrating a configuration of a message line related to trunk line UUI (User to User Information in Q.931 massage element) according to an embodiment of the present invention. The CO line number and CO line alert message are stored as in the following example.

3 is a configuration diagram of a function code related table according to the present invention. Store the function number, password, and function subroutine as in the following example.

Figure 4 shows the direct extension process of the ISDN key phone system according to the present invention.

In step 4a, it is checked whether an incoming signal from the outside, that is, a setup message is received. If the setup message has been received as a result of the above check, proceed to step 4b and the greeting message of the corresponding destination CO line set in advance. Samsung Electronics.] Is included in the UUI of the CO line alarm message and sent to the calling party. In step 4c, the subaddress in the setup message is read. In step 4d, it is checked whether the subaddress exists. If there is a sub address as a result of the check, the process proceeds to step 4e to check whether there is an extension or extension group or function code corresponding to the sub address. As a result of the check, when the sub address is a general extension, the sub address is divided into three cases to determine the processing direction.

If it is busy, it assumes that there is no sub address and performs the incoming call service. However, if a calling party number exists in the setup message, the calling party number is stored in the unanswered call trunk number field of the corresponding subaddress related table of the memory having the configuration as shown in FIG. If the caller number does not exist, the subscriber finds a subscriber corresponding to the incoming trunk line provided in a separate table (not shown) and sends a ring signal. The separate table is well known (steps 4h, 4o-4q).

Next, in the case of free, the greeting message of the corresponding station is included in the UUI of the connection message and transmitted (steps 4i and 4n). In case of a missed call, the call is disconnected and the missed call is released after a certain time after sending the missed message to the UUI. In addition, the caller number of the unanswered called trunk line is stored in the unanswered called trunk line number field of the table related to the subaddress of the memory (steps 4j to 4m and 4o to 4q).

On the other hand, if the sub address is an extension group, call processing is performed in the same manner as the extension group call (steps 4f and 4r).

If the sub address is a function code, it is checked whether a password corresponding to the function code matches (step 4t). If the function code and password match the check result, the call is released by including the fact that the service is not included in the UUI of the release message (steps 4w and 4x). On the other hand, if the function code and password do not match, the key-phone host program virtually connects the incoming call and calls the service routine of the function code to service it (steps 4u and 4v). Possible functions at this time include page, modification of specific decibels (db) and caller ID of unanswered call line. After the call is made, UUS (User to User Signaling) is requested from the outside or the keypad as needed to send and receive a display message or necessary information.

On the other hand, if there is no sub-address as a result of the check in step 4d proceeds to step 4s to perform the general trunk line incoming service.

In the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

Claims (9)

Sub-addresses that designate specific terminals on a point-to-multiport point in an integrated information and telecommunications network are mapped to extension or extension group numbers, greeting messages, release messages, and caller numbers of unanswered destinations in the key phone system. A direct call method comprising: a first step of checking whether an incoming setup message is received from an outside, a second step of checking whether a sub address exists in the received setup message when a setup message is received, and If there is an address, a third step of checking whether there is an extension that matches the subaddress; and if there is an extension that matches the subaddress, and the status is 'free', a greeting message of the corresponding station is transmitted to the calling party, and the sub If there is an extension that matches the address but is 'busy', the caller number in the setup message If present, the caller number is stored in memory and the general trunk line incoming service is performed. If there is an extension that matches the subaddress, but the status is 'missed', the call is connected and the missed message is sent to the calling party. And a fourth step of releasing the call and storing the caller number in a memory if the caller number exists in the setup message. 5. The method of claim 1, further comprising: step 5-1 of checking whether there is an extension group matching the sub address if the sub address exists, and performing an extension group call if there is an extension group matching the sub address. And further comprising two steps. The method of claim 2, further comprising checking step 6-1 if there is a function code that matches the sub address if the sub address exists, and checking whether the function code matches if there is a function code that matches the sub address. Step 6-2 to control, and if the password is matched to perform the corresponding function, and if it does not match, and sends a release message indicating service unavailable to the calling party 6-6 process characterized in that consisting of Way. 4. The method of claim 3, further comprising virtually connecting a call to the incoming call when the passwords match and perform a corresponding function. 4. The method of claim 3 wherein the function is a pager function. 4. The method of claim 3, wherein said function is a function for modifying specific decibels. The caller number of the unanswered called trunk line is stored in a memory when the status of the station corresponding to the sub address is 'absent'. Characterized in that the method. The method of claim 1, further comprising sending and receiving a display message or necessary information by a signaling request from one user to another user after a call is made. The method of claim 1, further comprising performing a general trunk line incoming service if the sub address does not exist.