CN217183342U - Headset assistant for IP telephone fixed-line telephone - Google Patents

Headset assistant for IP telephone fixed-line telephone Download PDF

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Publication number
CN217183342U
CN217183342U CN202221098501.4U CN202221098501U CN217183342U CN 217183342 U CN217183342 U CN 217183342U CN 202221098501 U CN202221098501 U CN 202221098501U CN 217183342 U CN217183342 U CN 217183342U
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headset
module
output
telephone
input
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陈宏达
朱成杰
房海腾
何健
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Linyi Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Linyi Power Supply Co of State Grid Shandong Electric Power Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The application provides an IP telephone landline headset assistant, comprising: the treater with the IP telephone landline HeadSet agreement intelligence matching module of being connected with the treater electricity, ordinary computer audio interface adaptation module, sound source host computer switch module, HeadSet switch module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, power module, the input of sound source host computer switching module is connected to the output of IP telephone landline HeadSet agreement intelligence matching module, ordinary computer audio interface adaptation module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, the input of HeadSet switching module is connected to the output of HeadSet switching module, sound source host computer switching module's output interconnect. The present application is adaptable to a variety of devices, including IP telephones, and is capable of adapting to both wired and wireless headsets.

Description

Headset assistant for IP telephone fixed-line telephone
Technical Field
The application relates to the technical field of headsets, in particular to an IP telephone landline headset assistant.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the large-scale application of the network IP telephone base in the power grid company, the personnel communication is more convenient, but the current IP telephone base has the problem of the communication mode (the current IP telephone base has 2 modes of handle communication and hands-free key communication):
(1) when the handle is used for communication, the user cannot type and look up data with both hands;
example 1, for an external operator of a power supply company, the operator needs to talk with a client while typing a keyboard to input a client name, an address and the like, and look up electric charges and the like, if the operator holds a handle of a telephone receiver with one hand, the operation efficiency is reduced, and the client may be worried about waiting;
example 2, for a network technician, the user needs to tap a keyboard with both hands while talking, and the router and switch command line test is performed, so that the user is inconvenient to hold a handset handle;
for example 3, for ordinary office workers with more telephone traffic, the head of the office worker is often tilted to clamp the handle of the receiver, and both hands are freed to type or look up data, which often causes neck and cervical vertebra pain and damages the health of the workers.
(2) When the hands-free key is used for calling, the sound of the loudspeaker is too large, so that the public space is inconvenient to use;
in the example 1, in a multi-person office, if a hand-free key is used for one-person telephone conversation, the sound of a loudspeaker is loud, so that noise pollution to other people is caused, and if hands are used by everyone, the office is troubled and worsened, so that the working idea efficiency is greatly reduced;
example 2, in an office space where a person is not a single person, when a hands-free key call is used, the sound of a loudspeaker is loud, and if the conversation content relates to personal privacy, company secret, business secret, national secret and the like, the conversation may be overheard by others, the secret may be leaked, and an information security event may occur.
Therefore, partial problems can be solved by answering the telephone through the headset equipment, the brands of the earphones are various, the brands of the IP telephones are more, the earphones and the IP telephones cannot be matched frequently, the IP telephones cannot be connected with the wireless earphones generally, meanwhile, the earphones are matched with the IP telephones and other equipment such as computers and mobile phones, therefore, the earphone auxiliary equipment can be matched with various equipment including the IP telephones and can be matched with the wired and wireless earphones, and the technical problem to be solved urgently is solved.
Disclosure of Invention
The present application proposes an IP telephone landline headset assistant to accommodate a variety of devices including IP telephones and to be able to accommodate both wired and wireless headsets in order to solve the above-mentioned problems.
The application provides an IP telephone landline headset assistant, comprising: the treater with the IP telephone landline HeadSet agreement intelligence matching module of being connected with the treater electricity, ordinary computer audio interface adaptation module, sound source host computer switch module, HeadSet switch module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, power module, the input of sound source host computer switching module is connected to the output of IP telephone landline HeadSet agreement intelligence matching module, ordinary computer audio interface adaptation module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, the input of HeadSet switching module is connected to the output of HeadSet switching module, sound source host computer switching module's output interconnect.
Preferably, the IP telephone landline HeadSet protocol intelligent matching module includes an adaptation detection circuit electrically connected with the processor, 4 input contacts and 4 output contacts, and the input contacts and the output contacts are connected through the processor in a one-to-one logical mapping manner.
Preferably, the input contact of the HeadSet protocol intelligent matching module of the IP telephone base is a 4C4P crystal header slot, and the HeadSet protocol intelligent matching module of the IP telephone base is connected with the IP telephone base through a 4C4P connector connecting line.
Preferably, the common computer audio interface adapter module comprises 2 groups of input ports and 1 group of output contacts, wherein the 2 groups of input ports are respectively a split three-section audio slot with the length of 3.5mm and an integrated four-section audio slot with the length of 3.5mm, the number of the output contacts is 5, and the 2 groups of input ports are connected in parallel to the output contacts.
Preferably, the negative contact of the 3.5mm four-section audio slot and the output contact are respectively connected with the processor, and the 3.5mm four-section audio slot and the output contact are connected with the processor in common.
Preferably, the sound source host switching module is a micro 5-pole double-throw switch, two input ends of the sound source host switching module are mutually exclusive and are respectively connected with the IP telephone landline HeadSet protocol intelligent matching module and the common computer audio interface adaptation module, and the output end of the sound source host switching module is connected with the HeadSet switching module.
Preferably, the headset switching module comprises a 5-pole double-throw switch which is micro-sized with the processor, two output ends of the headset switching module are mutually exclusive and are respectively connected with the wired headset intelligent adapting module and the wireless Bluetooth headset intelligent adapting module, and the input end of the headset switching module is connected with the sound source host switching module.
Preferably, the wired headset intelligent adapter module comprises a test sound box, a volume detection circuit, 2 input ports and 5 output contacts, wherein the test sound box and the volume detection circuit are electrically connected with the processor, the input ports are logically connected with the output contacts through the processor, and the two input ports are three sound slots of 3.5mm and three microphone slots of 3.5mm respectively.
Preferably, wireless bluetooth headset intelligence adaptation module includes BLE bluetooth module, antenna, input contact group, output contact group, the antenna electricity is connected in BLE bluetooth module, BLE bluetooth module is connected with the treater electricity, input contact group passes through treater and output contact group logical connection.
Preferably, the processor is an STM32F107 singlechip.
Compared with the prior art, the beneficial effect of this application is:
this application changes the conversation mode of IP telephone landline for ordinary headset mode, liberate both hands, it supports to realize general headset, the user can change the headset of oneself at will, need not to use the headset that the product is fixed, realize wired, wireless headset double adaptation, realize the intelligent adaptation of different brand models IP telephone landline and headset agreement, improve compatibility, need not manual proofreading, realize the switching of sound source key between telephone landline and the ordinary computer, realize wired headset, the switching of wireless headset key, after cutting the ordinary computer sound source from the telephone landline sound source, guarantee high tone quality, the music effect distortion of no user perception.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Figure 1 is a schematic illustration of an embodiment of the present application,
figure 2 is a schematic diagram of the system components of one embodiment of the present application,
figure 3 is a schematic diagram of an intelligent matching module for the HeadSet protocol of the IP phone in an embodiment of the present application,
figure 4 is a schematic diagram of a generic computer audio interface adaptation module according to one embodiment of the present application,
fig. 5 is a schematic diagram of an audio source host switching module according to an embodiment of the present application,
figure 6 is a schematic diagram of a wired headset intelligent adaptation module according to an embodiment of the present application,
figure 7 is a schematic diagram of a wireless bluetooth headset smart adaptor module according to an embodiment of the present application,
fig. 8 is a schematic diagram of a headset switching module according to an embodiment of the present application.
The specific implementation mode is as follows:
the present application is further described with reference to the following drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
As shown in fig. 1 to 8, the present application provides an IP telephone landline headset assistant including: the treater with the IP telephone landline HeadSet agreement intelligence matching module of being connected with the treater electricity, ordinary computer audio interface adaptation module, sound source host computer switch module, HeadSet switch module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, power module, the input of sound source host computer switching module is connected to the output of IP telephone landline HeadSet agreement intelligence matching module, ordinary computer audio interface adaptation module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, the input of HeadSet switching module is connected to the output of HeadSet switching module, sound source host computer switching module's output interconnect.
This application passes through IP telephone landline protocol intelligence matching module, the different IP telephone landline or computers of ordinary computer audio interface adaptation module adaptation, the sound source of different connection agreements such as cell-phone, through wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module adapts to wired or wireless HeadSet, switch the sound source through sound source host computer, switch wired or wireless HeadSet through HeadSet switching module, realize the dynamic adaptation of sound source and HeadSet.
Specifically, the IP telephone landline HeadSet protocol intelligent matching module includes an adaptation detection circuit electrically connected to the processor, 4 input contacts and 4 output contacts, where the input contacts and the output contacts are connected through the processor in a one-to-one logical mapping manner, and preferably, the input contact of the IP telephone landline HeadSet protocol intelligent matching module is a 4C4P crystal header slot, and the IP telephone landline protocol intelligent matching module is connected to the IP telephone landline through a 4C4P connector connection line.
The IP telephone set is provided with a HeadSet interface for plugging in a special wired HeadSet of a brand, and because the HeadSet protocols of all brands are different, the module is used for automatically adapting the HeadSet protocol, the HeadSet interface of the IP telephone set is provided with 4 wire cores which are generally marked as spaker +, spaker-, mic + and mic-, and are respectively used for butting the sound anode, the sound cathode, the microphone anode and the microphone cathode of the HeadSet, the HeadSet protocols of different brands are mainly reflected in different line sequences and different input and output electrical parameters, and the 4C4P crystal head slot is used for being connected with the HeadSet port of the IP telephone set; as shown in fig. 3, 4 output contacts of the IP phone landline HeadSet protocol intelligent matching module are sequentially defined as Speaker +, spaker-, mic +, mic-, and input contact and output contact are connected with the processor IOPort in a solid line manner in fig. 3, and the processor maps the input contacts and the output contacts with each other by a logic program method, so as to realize compatibility with different brands of IP phone landline sequences, and realize adjustment of electrical parameters such as voltage and current between the input contacts and the output contacts.
For example, the line sequence of the HeadSet set of an IP telephone of a certain brand is a Speaker point a +, a Speaker point B +, a Speaker point C, a Speaker point D-, and a microphone point D-, and the average voltage between the Speaker point a and the Speaker point B is 1.5V during off-hook prolonged ringing, the sound volume is large, the micro-current between the Speaker point C and the Speaker point C is 4.5mA, the adaptive detection circuit detects the voltage and current between any two points A, B, C, D, the processor logic program judges that the input point a is mapped to the Speaker point output, the input point B is mapped to the output point Mic +, the input point C is mapped to the Speaker point output, the input point D is mapped to the Speaker point output, and during mapping, the voltage difference between the Speaker point output and the Speaker point C is reduced to 80% of the voltage difference between the original input point A, C, and the sound volume is adjusted.
As shown in fig. 4, the audio interface adapter module of the general computer includes 2 sets of input ports and 1 set of output contacts, the 2 sets of input ports are respectively a split three-section audio slot with 3.5mm and an integrated four-section audio slot with 3.5mm, the number of the output contacts is 5, and the 2 sets of input ports are connected in parallel to the output contacts.
The split 3.5mm three-section Audio slot is used for a sound card port of a desktop computer and the like with separated sound and microphones, the integrated 3.5mm four-section Audio slot is used for a sound card port of a notebook computer, a mobile phone, a tablet and the like with integrated sound and microphones, 5 output contacts are respectively defined as Speaker + (left sound channel), Speaker + (right sound channel), Speaker-, Mic +, Mic-, the split 3.5mm three-section Audio slot and the integrated 3.5mm four-section Audio slot, and Speaker + (left sound channel), Speaker + (right sound channel), Speaker-, Mic + and Mic-pins are led out according to the international AC97 and HD Audio card standards respectively and are connected in a solid line manner in a figure 4.
The negative contact in the integrative 3.5mm four-section audio slot and the output contact is respectively connected with the processor, the integrative 3.5mm four-section audio slot and the output contact are connected in common through the processor, specifically, because the integrative 3.5mm four-section audio slot adopts a common ground connection method, a Speaker-pin and a Mic-pin are the same pin, the Speaker-pin and the Mic-pin are connected to 1 IO port (marked as X) of the processor, if the integrative 3.5mm four-section audio slot is not inserted with an audio plug, the processor keeps X, Y1 and Y2 three points separated, if the audio plug is inserted (detected by a reed in the slot), the processor conducts X, Y1 and Y2 three points.
As shown in fig. 5, the sound source host switching module is a micro 5-pole double-throw switch, two input ends of the sound source host switching module are mutually exclusive and are respectively connected with the IP phone landline HeadSet protocol intelligent matching module and the ordinary computer audio interface adaptation module, an output end of the sound source host switching module is connected with the HeadSet switching module, the sound source host switching module is a physical switch, which is convenient for a user to operate quickly and intuitively, and is used for selecting which host the sound source of the HeadSet comes from, and the output end of the sound source host switching module has 5 output contacts which are Speaker + (left), Speaker + (right), Speaker-, Mic +, Mic-.
As shown in fig. 6, the wired headset intelligent adaptation module includes a test sound box, a volume detection circuit, 2 input ports (i.e., external ports in fig. 6), and 5 output contacts (i.e., internal contacts in the figure), the test sound box and the volume detection circuit are electrically connected to the processor, the input ports are logically connected to the output contacts through the processor, and the two input ports are three audio slots of 3.5mm and three microphone slots of 3.5mm, respectively.
The wired headset intelligent adapter module is used for externally connecting a general wired headset (for ensuring tone quality, a sound and a microphone plug separated wired headset is limited), and automatically detecting the resistance current of the headset to adjust the sound volume and the microphone volume, 5 inner side contacts are Speaker + (left), Speaker + (right), Speaker-, Mic + and Mic-, 2 outer side ports are 1 three-section sound slot with the length of 3.5mm and 1 three-section microphone slot with the length of 3.5mm respectively, wherein the three-section sound slot with the length of 3.5mm is from the far end of an opening, and the 3 sections of contacts are marked as an A section, a B section and a C section respectively. The open far end of the 3.5mm three-section microphone slot is marked as a section D, and the open near end is marked as a section E.
The 5 inner side contacts and the sections A to E are connected with an IO port of the processor, and are conducted according to the following corresponding relation after the electrical parameters are dynamically converted through a logic program of the processor: speaker + (left) -segment A; speaker + (right) -segment B; speaker-segment C; mic + -segment D; Mic-E section.
The logic program in the conducting process is divided into a sound processing program and a microphone processing program, the sound processing program firstly detects the sound resistance (the resistance between the A section and the C section and the resistance between the B section and the C section) of the inserted headset through a volume detection circuit, the sound processing program is compared with a typical value (330 ohm), if the resistance value is larger (leading to smaller volume), the program carries out real-time dynamic volume gain (the voltage between the A section and the C section and between the B section and the C section are adjusted to be higher according to the wave pattern equal proportion of a sound source), the microphone processing program aims at the voltage fluctuation form of most of capacitance microphones, firstly, when the headset is inserted, the volume detection circuit of a wired headset intelligent adaptation module sends out standard detection sound, the detection sound is captured by a microphone and then generates voltage fluctuation between the D section and the E section, the volume detection circuit detects the amplitude of the voltage fluctuation and compares with the typical value (560mV), if the fluctuation is smaller (leading to smaller volume of the microphone), the program proceeds with a real-time dynamic volume gain (the voltage between segment D and segment E is scaled up in equal proportion to the real-time waveform of the microphone).
As shown in fig. 7, the wireless bluetooth headset intelligent adaptation module includes a BLE bluetooth module, an antenna, an input contact group (i.e., an internal contact group 1), and an output contact group (i.e., an internal contact group 2), where the antenna is electrically connected to the BLE bluetooth module, the BLE bluetooth module is electrically connected to the processor, and the input contact group is logically connected to the output contact group through the processor.
Specifically, the BLE bluetooth module utilizes a mature module supporting the HSP protocol, the antenna tuning signal range is 5 meters, so as to limit the distance and ensure the information security, the internal contact group 1 has 4 contacts of VCC, TX, RX, and GND, wherein TX and RX are command and data contacts and are connected with the processor, and the internal contact group 2 includes Speaker + (left), Speaker + (right), Speaker-, Mic +, Mic-5 contacts and is connected with the output contact of the headset switching module.
The logic program of the processor related to the module mainly comprises a Bluetooth headset pairing and solidification binding program and a bidirectional voice transceiving program, wherein the Bluetooth headset pairing program identifies an address code of a Bluetooth headset to be used, selects whether the Bluetooth headset is unique to realize safe binding, manages headset connection duration and dormancy to realize power consumption management, the bidirectional voice transceiving program modifies a Bluetooth general HSP protocol, and on the basis of the HSP protocol, additional functions such as answering command selection and the like are removed, only bidirectional voice transmission is reserved, and sound signals sent to the Bluetooth headset and received from the Bluetooth headset are led out to an internal contact group 2 after being transformed and shaped by electrical parameters.
As shown in fig. 8, the headset switch module is a miniature 5-pole double-throw switch, two output ends of the headset switch module are mutually exclusive and are respectively connected with the wired headset intelligent adaptation module and the wireless bluetooth headset intelligent adaptation module, an input end of the headset switch module is connected with the sound source host switch module, the input end of the headset switch module is provided with 5 input contacts, namely, Speaker + (left), Speaker + (right), Speaker-, Mic +, Mic-, and corresponding signals come from the sound source host switch module.
The treater that this application used is STM32F107 singlechip.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the specific embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood that those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application.

Claims (10)

  1. An IP telephone landline headset assistant, comprising: the treater with the IP telephone landline HeadSet agreement intelligence matching module of being connected with the treater electricity, ordinary computer audio interface adaptation module, sound source host computer switch module, HeadSet switch module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, power module, the input of sound source host computer switching module is connected to the output of IP telephone landline HeadSet agreement intelligence matching module, ordinary computer audio interface adaptation module, wired HeadSet intelligence adaptation module, wireless bluetooth HeadSet intelligence adaptation module, the input of HeadSet switching module is connected to the output of HeadSet switching module, sound source host computer switching module's output interconnect.
  2. 2. The IP telephone landline headset assistant of claim 1, wherein:
    the intelligent matching module of the HeadSet protocol of the IP telephone landline comprises an adaptive detection circuit, 4 input contacts and 4 output contacts, wherein the adaptive detection circuit is electrically connected with the processor, and the input contacts and the output contacts are connected through one-to-one logic mapping of the processor.
  3. 3. The IP telephone landline headset assistant of claim 2, wherein:
    the input contact of the intelligent matching module of the HeadSet protocol of the IP telephone base is a 4C4P crystal head slot, and the intelligent matching module of the HeadSet protocol of the IP telephone base is connected with the IP telephone base through a 4C4P connector connecting line.
  4. 4. The IP telephone landline headset assistant of claim 2, wherein:
    the common computer audio interface adaptation module comprises 2 groups of input ports and 1 group of output contacts, wherein the 2 groups of input ports are respectively a split 3.5mm three-section audio slot and an integrated 3.5mm four-section audio slot, the number of the output contacts is 5, and the 2 groups of input ports are connected in parallel to the output contacts.
  5. 5. The IP telephone landline headset assistant of claim 4, wherein:
    the negative contact in integrative four sections audio frequency slots of 3.5mm and the output contact is connected with the treater respectively, and integrative four sections audio frequency slots of 3.5mm and output contact pass through the treater and connect altogether.
  6. 6. The IP telephone landline headset assistant of claim 4, wherein:
    the sound source host switching module is a miniature 5-pole double-throw switch, two input ends of the sound source host switching module are mutually exclusive and are respectively connected with the IP telephone set HeadSet protocol intelligent matching module and the ordinary computer audio interface adaptation module, and the output end of the sound source host switching module is connected with the HeadSet switching module.
  7. 7. The IP telephone landline headset assistant of claim 6, wherein:
    the headset switching module is a miniature 5-pole double-throw switch, two output ends of the headset switching module are mutually exclusive and are respectively connected with the wired headset intelligent adapting module and the wireless Bluetooth headset intelligent adapting module, and the input end of the headset switching module is connected with the sound source host switching module.
  8. 8. The IP telephone landline headset assistant of claim 7, wherein:
    the wired headset intelligent adaptation module comprises a test sound box, a volume detection circuit, 2 input ports and 5 output contacts, wherein the test sound box and the volume detection circuit are electrically connected with a processor, the input ports are logically connected with the output contacts through the processor, and the two input ports are three sound slots of 3.5mm and three microphone slots of 3.5mm respectively.
  9. 9. The IP telephone landline headset assistant of claim 8, wherein:
    the wireless Bluetooth headset intelligent adaptation module comprises a BLE Bluetooth module, an antenna, an input contact group and an output contact group, wherein the antenna is electrically connected with the BLE Bluetooth module, the BLE Bluetooth module is electrically connected with the processor, and the input contact group is logically connected with the output contact group through the processor.
  10. 10. The IP telephone landline headset assistant of claim 1, wherein:
    the processor is an STM32F107 singlechip.
CN202221098501.4U 2022-05-09 2022-05-09 Headset assistant for IP telephone fixed-line telephone Active CN217183342U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221098501.4U CN217183342U (en) 2022-05-09 2022-05-09 Headset assistant for IP telephone fixed-line telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221098501.4U CN217183342U (en) 2022-05-09 2022-05-09 Headset assistant for IP telephone fixed-line telephone

Publications (1)

Publication Number Publication Date
CN217183342U true CN217183342U (en) 2022-08-12

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CN202221098501.4U Active CN217183342U (en) 2022-05-09 2022-05-09 Headset assistant for IP telephone fixed-line telephone

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CN (1) CN217183342U (en)

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