KR19980053344A - All-call paging method of simple changer - Google Patents

Abstract

The present invention provides all-call paging for simultaneous transmission of announcements, announcements, etc. to voice wires to all wired or wireless terminal users connected to a simple switching device, especially a wireless simple switching device of a digital european cordless telephone (DECT) system. The present invention relates to a method of all call paging of a simple exchange device that implements an all call paging function.

When all call paging is performed by the conventional system, the wireless terminals cannot receive the voice data. If the voice channel is formed to receive the voice data, many wireless terminals at the same time are limited due to the limitation of the wireless channel. Channels cannot be formed.

In the present invention, the voice message is stored in the system during all call paging, and when the wireless terminal informs the wireless terminal that the voice message has been stored in the system, the wireless terminal user allocates a wireless voice channel in response to the stored voice message. In addition, the present invention stores the contents of the announcement of the premises as a voice message, and provides the terminal user to rehearse in response to inputting a specific code word promised in advance.

Description

All Call Paging Method of Simple Switching Device

The present invention provides all-call paging for simultaneous transmission of announcements, announcements, etc. to voice wires to all wired or wireless terminal users connected to a simple switching device, especially a wireless simple switching device of a digital european cordless telephone (DECT) system. The present invention relates to a method of all call paging of a simple exchange device that implements an all call paging function.

In the DECT type wireless simple switching system, the DECT type is used in a wireless channel. In this method, the wireless terminal normally synchronizes with a wireless system dummy channel. A traffic channel is formed.

Figure 1 schematically shows the configuration of such a wireless simple switching system of the DECT method.

The simplified switching device 101 connected to a public switched telephone network (PSTN) or an integrated information communication network (ISDN) is provided with a wireless interface board 101a and a digital interface board 101b.

In addition, a cable 101c is connected to a plurality of cells 102 to 102n of a wireless system, and each cell is a wired or wireless terminal 104 such as a handset or a wireless keyset to a base station. ) Are operated.

Digital keysets 103 are connected to the digital interface board 101b.

In such a wireless simple switching system, each wireless terminal is synchronized with a dummy channel such as a second channel emitted to synchronize each terminal in each cell of the wireless system.

And, in order to make a call, a traffic channel is formed like a second channel.

This is in accordance with the specifications of the DECT.

The frame structure of the DECT is 16 frames = 1 multiframe format, in which 1 TDMA frame is composed of 24 slots, and one slot is 32 bits of S field, 388 bits of D field, and 56 bits of Guard. 1 slot D field (D-field) 388 bits consists of 64-bit A field, 320 fields B field, 4 bits X field and 4 bits Z field, where A field is 8 bits A header, a 40-bit tail, and a 16-bit CRC are used for sending control signals between the system and the terminal, and the B field is used for sending voice data.

That is, the frame structure according to the specification of DECT is basically centered on one frame, and the basic unit for one voice call is a slot, and up to 12 people can talk simultaneously. Since 32kbps ADPCM (Adaptive Differential Pulse Coded Modulation) is used to transmit the data, voice data can be transmitted at the speed of 32kbps.

This voice data is sent through the B field, and the A field is used to send a control signal between the system and the terminal.

Therefore, in this system, there is one sync channel for each cell, which is a unidirectional transmission from the system to the wireless terminals, and each wireless terminal cannot transmit data to the system through the sync channel.

In addition, to establish a call, a voice channel is formed, and in this case, data can be exchanged with each other.

Therefore, when all call paging is performed by the conventional system, the wireless terminals cannot receive the voice data, and when the voice channel is formed to receive the voice data, many wireless terminals are simultaneously restricted due to the limitation of the wireless channel. Cannot form a voice channel.

In the present invention, the voice message is stored in the system during all call paging, and when the wireless terminal informs the wireless terminal that the voice message has been stored in the system, the wireless terminal user allocates a wireless voice channel in response to the stored voice message. It provides an all call paging method of a simple exchange device to receive a call.

In addition, in the present invention, a simple exchange which is applied to a key phone system or the like as a private exchange device, stores contents of a premises broadcast as a voice message and provides the terminal user to rehearse in response to inputting a predetermined codeword which has been promised in advance. We present a method for all call paging of a device.

1 is a schematic diagram of a DECT wireless simple switching system as a conventional simple switching apparatus.

2 is a synchronization channel and voice channel format of the DECT wireless simplified switching system

3 is a schematic diagram of a DECT type wireless simplified exchange system to which the present invention is applied.

4 is a block diagram of a voice storage device of a wireless simple switching system to which the present invention is applied.

5 is a flowchart showing the all-call paging procedure of the present invention.

6 is a flowchart showing a response procedure in a terminal according to the present invention.

Figure 3 shows the configuration of a wireless simple switching system of the DECT method to which the present invention is applied.

In the drawings, the same components as those of the first and the same components are denoted by the same reference numerals and redundant description thereof will be omitted.

In order to perform all call paging of the present invention, the simplified switching device 101 includes a control unit 301 for controlling the storage and transmission of voice messages and a voice message under the control of the control unit 301. The voice storage unit 302 and the on-premises broadcasting unit 303 for broadcasting in the premises, the voice storage unit 302, as shown in Figure 4, the extension number and date of the person paging And an information table 302a having a time and a memory address where the voice is stored, and a memory area of the voice data area 302b in which voice data is stored at an address specified in the information table 302a. .

5 and 6 show the procedure of the All Call Paging control of the present invention by the wireless simplified switching system configured as described above.

5 is a procedure of paging control performed in the wireless simple switch, and FIG. 6 is a control procedure in the wireless terminal responding to this.

First, refer to FIG.

When all call paging is performed in a wired terminal or a wireless terminal, the control unit 301 of the wireless system enters the extension number (name is input) of the person who has all call paging in the voice storage unit 302. Name), its date and time, and a voice storage address, are stored in the area 302a, and a voice signal is stored in the area 302b.

Then, the mobile station loads the extension number and time in the all call paging storage table 302a through the synchronization channel of each cell 102n, that is, the A field.

When the wireless terminal responds to this, it reads the message from the area 302b where the voice message is stored by referring to the address of the table 302a.

6 shows a response by the wireless terminal.

If there is All Call Paging, it is carried in the A field of the sync channel and transmitted to the wireless terminal user through the LCD and buzzer of the terminal.

In response to the all call paging, if a predetermined keyword (function key + dial key) of the wireless terminal is pressed in response to the all call paging, the wireless system receives this and inputs it to the control unit 301 of the simplified switching device 101. do.

That is, when the wireless terminal requests a voice call from the wireless system with the wireless channel, the wireless system responds to the wireless system to form a voice channel between the wireless system and the terminal.

Then, in accordance with the securement of the voice channel, the control unit 301 obtains the address of the area 302b where the voice is stored from the All Call Paging storage table 302a of the voice storage unit 302. By transmitting data to the handset of the terminal through the secured voice channel, it is possible to listen to all call paging voice messages.

On the other hand, the present invention can be applied to a private exchange (especially a keyphone system) to rehearse the contents of paging (information broadcasting).

That is, since the terminal user may not be able to hear this broadcast when the private announcement system 303, in particular, when the operator guides the external telephone to the corresponding terminal user, the paging voice may not be heard. The message is stored in the voice storage unit 302 so that the terminal user can input the specific keyword promised to listen to the message again.

This is done in the following order.

When an external telephone (PSTN, ISDN) is placed in the premises exchange system, the attendant receives the call and calls the subscriber using the premises announcement broadcasting unit 303 according to the exchange request.

However, if there is no response of the subscriber to this call, the voice message of the premises broadcast is stored in the voice storage unit 302.

If the terminal subscriber later requests the message to be re-listened using the keyword previously promised, the controller 301 detects the message and reproduces the voice message stored in the voice storage unit 302 and transmits the message to the terminal. The terminal subscriber who has requested the message confirmation can listen to the voice message again.

Such voice messages can respond to multiple subscribers simultaneously.

Using the All Call Paging function of the present invention is very useful when collectively delivering notices, announcements, etc. to all terminal users connected to the wireless simplified switching device.

In addition, since the voice message can be stored and transmitted to the subscriber who has not listened to the voice announcement broadcast or the subscriber who wants to confirm the listening contents, the accuracy of the communication can be secured.

Claims (2)

Storing paging information such as voice data for all call paging and an extension number and time of paging; notifying all terminals of all call paging; And responsive to securing a voice channel with the terminal, and transmitting the stored voice data through the secured voice channel. 2. The method of claim 1, wherein the voice data further comprises voice announcements broadcasted in the premises, and when the terminal subscriber transmits the promised keyword, the voice data is transmitted so that the stored voice message can be rehearsed to a specific subscriber. All Call Paging Method of Simple Switching System.