Telephone with double call modes of PSTN and SIP

Abstract

The utility model discloses a telephone with a PSTN (Public Switched Telephone Network) and SIP (Session Initiation Protocol) dual-call mode, which solves the technical problem that when a telephone compatible with PSTN and SIP calls in the prior art carries out PSTN call recording, the volumes of two parties of calls generated by external line recording are inconsistent. Comprising a main processor, a PSTN module, a voice switching module and an audio module, the main processor is connected with the PSTN module, a common end of the voice switching module is connected with the audio module, a first end of the voice switching module is connected with the main processor, and a second end of the voice switching module is connected with the PSTN module; the first end of the PSTN recording module is connected with an audio channel of the PSTN module, and the second end of the PSTN recording module is connected with the main processor. By adjusting the audio sound gain of the external line of the PSTN, the call recording volume is kept consistent. The method can be widely applied to the communication technology field.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, in particular to a telephone with PSTN and SIP dual-talk modes. Background Art

[0002] Conventional phones compatible with both PSTN and SIP call technologies can facilitate multi-party conference calls with low call costs when using SIP calls. PSTN calls also offer stable communication, unaffected by network conditions. SIP calls can be recorded directly using the system's network data, ensuring consistent voice volume between both parties. However, PSTN calls require an external line for recording, resulting in different recording volumes on both sides, impacting the recording quality. Summary of the Invention

[0003] In response to the shortcomings and deficiencies in the existing technology, the utility model provides a telephone with PSTN and SIP dual-talk mode. By integrating PSTN and SIP technologies and adopting audio channel switching, the PSTN and SIP dual-talk mode is realized, and the recording mode of traditional PSTN phones is changed to improve the recording quality.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] The present application provides a phone with PSTN and SIP dual-talk mode, comprising a main processor, a PSTN module, a voice switching module, and an audio module, wherein the main processor is connected to the PSTN module, a common end of the voice switching module is connected to the audio module, a first end of the voice switching module is connected to the main processor, and a second end of the voice switching module is connected to the PSTN module;

[0006] A PSTN recording module, wherein a first end of the PSTN recording module is connected to the audio channel of the PSTN module, and a second end of the PSTN recording module is connected to the main processor.

[0007] Furthermore, the PSTN recording module is a PSTN channel audio acquisition chip.

[0008] Furthermore, the voice switching module includes a first switch, a second switch, a third switch and a fourth switch, the audio module includes a hands-free microphone, a hands-free speaker, a handle microphone and a handle receiver, and the common ends of the first switch, the second switch, the third switch and the fourth switch are respectively connected to the hands-free microphone, the hands-free speaker, the handle microphone and the handle receiver.

[0009] Furthermore, the input end of the PSTN channel audio acquisition chip is respectively connected to the hands-free microphone channel, hands-free speaker channel, handle microphone channel and handle receiving channel of the PSTN module, and the output end and enable end of the PSTN channel audio acquisition chip are connected to the main processor.

[0010] Furthermore, the first end of the first switch is connected to the SIP hands-free microphone channel of the main processor, and the second end is connected to the PTSN hands-free microphone channel of the PSTN module; the first end of the second switch is connected to the SIP hands-free speaker channel of the main processor, and the second end is connected to the PTSN hands-free speaker channel of the PSTN module; the first end of the third switch is connected to the SIP handle microphone channel of the main processor, and the second end is connected to the PTSN handle microphone channel of the PSTN module; the first end of the fourth switch is connected to the SIP handle receiving channel of the main processor, and the second end is connected to the PTSN handle receiving channel of the PSTN module.

[0011] Furthermore, it also includes a PSTN answering module, which includes a fourth switch and a fifth switch. The fourth switch is an audio playback switching switch, and the fifth switch is a handle microphone cut-off switch. The audio playback switching switch is respectively connected to the audio playback channel of the main processor and the handle microphone channel of the PSTN module, and the handle microphone cut-off switch is respectively connected to the handle microphone channel and the handle microphone of the PSTN module.

[0012] Furthermore, the PSTN module includes an MCU module, an incoming call decoding chip and a PSTN wired interface, the PSTN wired interface is connected to the incoming call decoding chip, the incoming call decoding chip is connected to the MCU module, and the MCU module is connected to the main processor and the voice switching module.

[0013] Furthermore, it also includes a communication module, a camera module, a network card module, a display module and a key module, and the communication module, camera module, network card module, display module and key module are respectively connected to the main processor.

[0014] The utility model has the following beneficial effects:

[0015] This utility model features a telephone with PSTN and SIP dual-call modes. The voice switching module switches each audio module's audio channel to either a SIP channel or a PSTN channel, enabling a single telephone to operate in both PSTN and SIP dual-call modes, improving telephone efficiency. Furthermore, the connection between the main processor and the PSTN recording module automatically adjusts the PSTN recording sound gain, ensuring consistent volume levels on both sides of a PSTN line call recording, improving recording quality. Furthermore, the connection between the main processor and the PSTN answering module enables the PSTN answering function to be implemented using the main processor's audio playback channel. This effectively enhances the telephone's functionality and application scope, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the frame structure of the telephone shown in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the PSTN and SIP audio channel switching connection of the telephone shown in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the PSTN recording module channel connection of the telephone shown in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the PSTN answering module channel connection of the telephone shown in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the frame structure of the telephone shown in an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. Example

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] like Figure 1 As shown, the present invention provides a telephone with PSTN and SIP dual-talk mode, including a main processor, a PSTN module, a voice switching module and an audio module, wherein the main processor is connected to the PSTN module, the common end of the voice switching module is connected to the audio module, the first end of the voice switching module is connected to the main processor, and the second end of the voice switching module is connected to the PSTN module;

[0025] A PSTN recording module, wherein a first end of the PSTN recording module is connected to the audio channel of the PSTN module, and a second end of the PSTN recording module is connected to the main processor.

[0026] In the embodiment of this application, the main processor model is the RK3568 core board, which integrates a quad-core ARM Cortex-A55 with a main frequency of up to 1.8GHz / 2.0GHz per core, a Mali G52 2EE graphics processor, supports 4K decoding and 1080P encoding, and has a built-in independent NPU. Running on the Android system, the SIP application in the Android system has good performance and high stability.

[0027] SIP runs on the main processor system, which is connected to the PSTN module. The voice switching module switches the audio module's audio channels to either SIP or PSTN channels, enabling a single phone to operate in both PSTN and SIP call modes, improving phone efficiency. The PSTN recording module connected to the main processor differs from traditional PSTN line recording methods by adjusting the PSTN recording module's sound gain through control of the main processor, unifying the recording volume on both sides of the call in PSTN mode and improving recording quality.

[0028] Specifically, if Figure 2 As shown, the voice switching module includes a first switch, a second switch, a third switch and a fourth switch, and the audio module includes a hands-free microphone, a hands-free speaker, a handle microphone and a handle receiver. The common ends of the first switch, the second switch, the third switch and the fourth switch are respectively connected to the hands-free microphone, the hands-free speaker, the handle microphone and the handle receiver.

[0029] The first end of the first switch is connected to the SIP hands-free microphone channel of the main processor, and the second end is connected to the PTSN hands-free microphone channel of the PSTN module. The first end of the second switch is connected to the SIP hands-free speaker channel of the main processor, and the second end is connected to the PTSN hands-free speaker channel of the PSTN module. The first end of the third switch is connected to the SIP handle microphone channel of the main processor, and the second end is connected to the PTSN handle microphone channel of the PSTN module. The first end of the fourth switch is connected to the SIP handle receiving channel of the main processor, and the second end is connected to the PTSN handle receiving channel of the PSTN module.

[0030] Furthermore, the PSTN recording module is a PSTN channel audio acquisition chip.

[0031] like Figure 3 As shown, the input end of the PSTN channel audio acquisition chip is respectively connected to the hands-free microphone channel, hands-free speaker channel, handle microphone channel and handle receiving channel of the PSTN module, and the output end and enable end of the PSTN channel audio acquisition chip are connected to the main processor.

[0032] In an embodiment of the present application, the PSTN channel audio acquisition chip model is ES7210, which is designed to use 4 channels. The 4 channels are respectively connected to the 4 audio channels of the PSTN module, among which the channels connected to the hands-free speaker channel and the handle receiving channel are provided with an adjustment gain value. When the PSTN recording is triggered, the main processor instructs the PSTN channel audio acquisition chip to work, and the sound collected from the hands-free speaker channel and the handle receiving channel is adjusted by the gain value to make it consistent with the sound collected by the microphone call, thereby improving the recording quality. In addition, different sound adjustment gain values ​​can be set by the main processor according to different device environments, which can be suitable for different line environments.

[0033] like Figure 4 As shown, it also includes a PSTN answering module, which includes a fourth switch and a fifth switch. The fourth switch is an audio playback switching switch, and the fifth switch is a handle microphone cut-off switch. The audio playback switching switch is respectively connected to the audio playback channel of the main processor and the handle microphone channel of the PSTN module, and the handle microphone cut-off switch is respectively connected to the handle microphone channel and the handle microphone of the PSTN module.

[0034] In an embodiment of the present application, PSTN calls are automatically answered with the help of the main processor. After the automatic answering is set, when a call comes in on the PSTN line, the main processor controls the fourth switch to connect the audio playback channel of the main processor and the handle microphone channel of the PSTN module. At the same time, the main processor controls the fifth switch to cut off the connection between the handle microphone channel of the PSTN module and the handle microphone, so that the answering audio stored in the audio playback channel of the processor is played to the handle microphone channel of the PSTN module, so that the caller can obtain the answering audio.

[0035] Furthermore, the PSTN module includes an MCU module, an incoming call decoding chip and a PSTN wired interface, the PSTN wired interface is connected to the incoming call decoding chip, the incoming call decoding chip is connected to the MCU module, and the MCU module is connected to the main processor and the voice switching module.

[0036] like Figure 5 As shown, it also includes a communication module, a camera module, a network card module, a display module and a key module, and the communication module, camera module, network card module, display module and key module are respectively connected to the main processor.

[0037] In the embodiment of this application, the communication module includes a 4G module, a Bluetooth module, and a WiFi module to enable wireless communication between the phone and the outside world. The camera module and display module are used for video communication during SIP conferences. The button module includes SIP call and PSTN call trigger buttons, as well as a PSTN automatic answering button.

[0038] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0041] The above is only a preferred specific implementation method of the present invention, and the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A phone with PSTN and SIP dual-talk mode, characterized in that: The system comprises a main processor, a PSTN module, a voice switching module and an audio module, wherein the main processor is connected to the PSTN module, the common end of the voice switching module is connected to the audio module, the first end of the voice switching module is connected to the main processor, and the second end of the voice switching module is connected to the PSTN module; A PSTN recording module, wherein a first end of the PSTN recording module is connected to the audio channel of the PSTN module, and a second end of the PSTN recording module is connected to the main processor.

2. The phone with PSTN and SIP dual-talk mode according to claim 1, characterized in that: The PSTN recording module is a PSTN channel audio acquisition chip.

3. The phone with PSTN and SIP dual-talk mode according to claim 2, characterized in that: The voice switching module includes a first switch, a second switch, a third switch and a fourth switch, and the audio module includes a hands-free microphone, a hands-free speaker, a handle microphone and a handle receiver. The common ends of the first switch, the second switch, the third switch and the fourth switch are respectively connected to the hands-free microphone, the hands-free speaker, the handle microphone and the handle receiver.

4. The telephone with PSTN and SIP dual-talk mode according to claim 3, characterized in that: The input end of the PSTN channel audio acquisition chip is respectively connected to the hands-free microphone channel, hands-free speaker channel, handle microphone channel and handle receiving channel of the PSTN module, and the output end and enable end of the PSTN channel audio acquisition chip are connected to the main processor.

5. The telephone with PSTN and SIP dual-talk mode according to claim 2, characterized in that: The first end of the first switch is connected to the SIP hands-free microphone channel of the main processor, and the second end is connected to the PTSN hands-free microphone channel of the PSTN module. The first end of the second switch is connected to the SIP hands-free speaker channel of the main processor, and the second end is connected to the PTSN hands-free speaker channel of the PSTN module. The first end of the third switch is connected to the SIP handle microphone channel of the main processor, and the second end is connected to the PTSN handle microphone channel of the PSTN module. The first end of the fourth switch is connected to the SIP handle receiving channel of the main processor, and the second end is connected to the PTSN handle receiving channel of the PSTN module.

6. The telephone with PSTN and SIP dual-talk mode according to claim 1, characterized in that: It also includes a PSTN answering module, which includes a fourth switch and a fifth switch. The fourth switch is an audio playback switching switch, and the fifth switch is a handle microphone cut-off switch. The audio playback switching switch is respectively connected to the audio playback channel of the main processor and the handle microphone channel of the PSTN module, and the handle microphone cut-off switch is respectively connected to the handle microphone channel and the handle microphone of the PSTN module.

7. The telephone with PSTN and SIP dual-talk mode according to claim 1, characterized in that: The PSTN module includes an MCU module, an incoming call decoding chip and a PSTN wired interface. The PSTN wired interface is connected to the incoming call decoding chip, the incoming call decoding chip is connected to the MCU module, and the MCU module is connected to the main processor and the voice switching module.

8. The telephone with PSTN and SIP dual-talk mode according to claim 1, characterized in that: It also includes a communication module, a camera module, a network card module, a display module and a key module, and the communication module, camera module, network card module, display module and key module are respectively connected to the main processor.

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