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Method for instantly getting extension telephone by recalling group telephone exchange

A group telephone and extension technology, applied in the field of communication, can solve the problems of not being able to know the extension number, loss of business opportunities for group users, troubles for outside users, etc.

Inactive Publication Date: 2006-11-22
山东天辉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when a private branch exchange or a PBX extension calls an outside line, if the call is not connected, the called party can only call the trunk line when calling back the user, and cannot know the extension number. Even if there is a manual operator, the operator cannot know the call just now the user's extension
In some cases, even if the two parties have established a normal call, the other party communicating with the PBX does not know the specific number of the internal extension that is communicating with it. When you want to contact the extension again, you cannot get in touch in time because you do not know the extension number. It not only delays a lot of precious time of the calling user, but also pays more communication charges. Although the use of the group switchboard provides convenience for group users and saves phone charges, it brings trouble to outside users. There are great opinions from users, which leads to the loss of a large number of business opportunities for group users, and there is no good solution yet

Method used

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  • Method for instantly getting extension telephone by recalling group telephone exchange
  • Method for instantly getting extension telephone by recalling group telephone exchange
  • Method for instantly getting extension telephone by recalling group telephone exchange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: as attached figure 2 Shown: The PBX is composed of five parts: analog interface, voice codec, digital switching circuit, processor, and memory. The outside line or internal line voice signal reaches the voice codec through the analog interface circuit, the analog voice signal is converted into a digital signal, and then enters the digital switching circuit for switching. The direction of digital switching circuit switching is completely under the control of the processor. The digital switching circuit is connected with the processor through the control bus and the digital voice bus, and the control bus controls the switching direction of the digital switching circuit. The digital voice bus is connected with the digital switching circuit and the processor, and can simultaneously transmit and transmit multiple channels of voice, carrying the input of the demodulated signal and the output of the playback voice. Voice signal can reach any unit (external l...

Embodiment 2

[0029] Embodiment two: as attached image 3Shown: the PBX switchboard is composed of six parts: analog interface, voice codec, digital switching circuit, processor, memory, and logic circuit. Compared with the first embodiment, a logic circuit is added. In practical applications, there are relatively few processors with digital voice bus interfaces, but most of them have external buses. In order to solve this problem, logic circuits are added to allow the processor to indirectly access the digital voice bus through the external bus. Other parts are the same as in Embodiment 1.

Embodiment 3

[0030] Embodiment three: as attached Figure 4 Shown: the PBX switchboard is composed of seven parts: analog interface, voice codec, digital switching circuit, processor, memory, logic circuit, and demodulation unit. Compared with the second embodiment, a demodulation unit is added. The demodulation unit has two aspects: caller ID demodulation and key number demodulation. In practical applications, the development of high-performance processors is difficult and expensive. In order to be more convenient for implementation, the caller ID demodulation and the key number demodulation are separated from the processor, and a coprocessor can be used to demodulate through software, or a dedicated hardware circuit can be used to realize the demodulation. In this way, the processor can select a processor with lower performance, which is beneficial to improve the performance-price ratio of the device. Other parts are identical with embodiment two.

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Abstract

The invention relates to a method for instantly connecting the extension number by central exchange. Wherein, the external or internal voice signal via the analogue interface is transmitted to the exchange circuit; the exchange circuit and memory via data bus are connected to the processor; the processor comprises a incoming display demodulator and a button number demodulator; when one internal extension number calls external number, its button information via analogue interface is transmitted to the exchange circuit; the processor controls the exchange circuit to exchange the voice signal to the button number demodulator; the button information is demodulated as the calling record to be stored in memory; the processor controls the exchange circuit to exchange said voice signal to the incoming display demodulator; the incoming display number will be demodulated to be sent to processor; the processor can search said number in the memory and compose it into voice to inform last extension numbers to the calling user; if the external calling user do not input the extension number, the processor will control the exchange circuit to connect said extension number.

Description

1. Technical field [0001] The invention relates to the technical field of communication, in particular to a method for calling back a PBX switchboard to instantly connect an extension phone. 2. Background technology [0002] At present, when a private branch exchange or a PBX extension calls an outside line, if the call is not connected, the called party can only call the trunk line when calling back the user, and cannot know the extension number. Even if there is a manual operator, the operator cannot know the call just now The user's extension. In some cases, even if the two parties have established a normal call, the other party communicating with the PBX does not know the specific number of the internal extension that is communicating with it. When you want to contact the extension again, you cannot get in touch in time because you do not know the extension number. It not only delays a lot of precious time of the calling user, but also pays more communication charges. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M3/42H04Q3/72H04Q3/78
Inventor 朱启超马永奎
Owner 山东天辉科技有限公司
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