CN215072558U - Dual-mode communication selection device for fixed telephone - Google Patents
Dual-mode communication selection device for fixed telephone Download PDFInfo
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Abstract
The utility model provides a fixed telephone bimodulus communication selecting arrangement relates to the communication technology field. The dual-mode communication selection device for the fixed telephone comprises: the device comprises a control module, a ringing detection module, a first external line module, a second external line module and a mode selection switch; the first external line module and the second external line module are respectively connected with the mode selection switch, the ringing detection module is respectively connected with the first external line module, the second external line module and the control module, and the control module is connected with the mode selection switch. Two communication channels are provided through the first external line module and the second external line module, when one communication channel goes wrong, the other communication channel can be switched to carry out communication, so that safer and more reliable service can be provided for fixed-line telephone users, and the selection of multiple operator services can be realized.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a fixed telephone bimodulus communication selecting arrangement.
Background
With the development of economy and the improvement of living standard of people, the fixed telephone plays an important role all the time. The fixed telephone has the advantages of low radiation, high communication quality, clear tone quality and the like, and is an indispensable communication mode in the office and life of people.
In the prior art, a fixed telephone user generally uses a service provided by one operator device.
However, the conventional fixed telephone has only one telephone channel, and after a line fault occurs, the problem that the communication cannot be performed occurs, and the service of other telecommunication operators cannot be selected.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a fixed telephone bimodulus communication selecting arrangement to only a telephone channel of solving current fixed telephone, after circuit fault appearing, can appear the problem that can not converse, more can't select other telecom operator's service.
The utility model provides a fixed telephone bimodulus communication selecting arrangement, include: the device comprises a control module, a ringing detection module, a first external line module, a second external line module and a mode selection switch;
the first external line module and the second external line module are respectively connected with the mode selection switch, the first external line module is used for being connected with first operator equipment, and the second external line module is used for being connected with second operator equipment;
the ringing detection module is respectively connected with the first external line module, the second external line module and the control module, and is used for sending ringing sign information to the control module when detecting that the first external line module or the second external line module has a ringing signal, wherein the ringing sign information comprises the mark information of the external line module corresponding to the ringing signal;
the control module is connected with the mode selection switch, and the control module is used for selecting the working mode of the mode selection switch according to the ringing sign information so as to conduct the first external line module or the second external line module corresponding to the marking information of the external line module.
Optionally, the first external line module includes a first external line, and the first external line is in wired connection with the first operator device; or the like, or, alternatively,
the first outside line module comprises a first VOIP gateway module, a first user authentication module and a first WiFi module, the first VOIP gateway module is respectively connected with the mode selection switch and the first WiFi module, the first user authentication module is connected with the first WiFi module, and the first WiFi module is in wireless connection with the first operator equipment.
Optionally, the first user authentication module is configured with authentication information of the first operator device.
Optionally, the first WiFi module is a 2.4G/5G wireless module.
Optionally, the second outside line module includes a second outside line, and the second outside line is in wired connection with the second operator device; or the like, or, alternatively,
the second external line module comprises a second VOIP gateway module, a second user authentication module and a second WiFi module, the second VOIP gateway module is respectively connected with the mode selection switch and the second WiFi module, the second user authentication module is connected with the second WiFi module, and the second WiFi module is in wireless connection with the second operator equipment.
Optionally, a second key of the second operator device is configured in the second user authentication module.
Optionally, the second WiFi module is a 2.4G/5G wireless module.
Optionally, the apparatus further comprises a power module, wherein the power module is used for supplying power to the control module and the ringing detection module.
Optionally, the mode selection switch interfaces with RJ 11.
Optionally, the mode selection switch is a relay.
The embodiment of the utility model provides a fixed telephone bimodulus communication selection device provides two kinds of communication channel through first outside line module and second outside line module, when one of them communication channel goes wrong, can switch to another communication channel and communicate to can provide safer and reliable service for the fixed telephone user, but also can realize the selection of many operators' service.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a dual-mode communication selection device for a fixed-line telephone according to an embodiment of the present invention;
fig. 2 is a schematic application state diagram of a dual-mode communication selection device of the fixed-line telephone provided in fig. 1;
fig. 3 is a schematic structural diagram of another dual-mode communication selection device for a fixed-line telephone according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another dual-mode communication selection device for a fixed-line telephone according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another dual-mode communication selection device for a fixed-line phone according to an embodiment of the present invention.
Description of reference numerals:
10-a control module;
20-ringing detection module;
31-first outer line;
32-a first VOIP gateway module;
33-a first user authentication module;
34-a first WiFi module;
41-the second outer line;
42-a second VOIP gateway module;
43-a second user authentication module;
44-a second WiFi module;
50-mode selection switch;
60-a power supply module;
a 70-RJ11 interface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the prior art, a fixed telephone user generally uses a service provided by one operator device.
However, the conventional fixed telephone has only one telephone channel, and after a line fault occurs, the problem that the call cannot be carried out occurs.
In order to solve the above problem, an embodiment of the present invention provides a dual-mode communication selection device for a fixed phone, which provides two communication channels through a first external line module and a second external line module, and when one of the communication channels goes wrong, the communication device can be switched to another communication channel for communication, thereby providing safer and more reliable services for users of the fixed phone, and further realizing service selection of multiple operators.
The following describes the dual-mode communication selection device for a fixed-line phone according to an embodiment of the present invention in detail.
Fig. 1 is a schematic structural diagram of a dual-mode communication selection device for a fixed-line telephone according to an embodiment of the present invention; fig. 2 is a schematic application state diagram of a dual-mode communication selection device of the fixed-line telephone provided in fig. 1; fig. 3 is a schematic structural diagram of another dual-mode communication selection device for a fixed-line telephone according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of another dual-mode communication selection device for a fixed-line telephone according to an embodiment of the present invention; fig. 5 is a schematic structural diagram of another dual-mode communication selection device for a fixed-line phone according to an embodiment of the present invention.
As shown in fig. 1 to 5, an embodiment of the present invention provides a dual-mode communication selection device for a fixed phone, including: a control module 10, a ring detection module 20, a first outside line module, a second outside line module, and a mode selection switch 50.
The first external line module and the second external line module are respectively connected with the mode selection switch 50, the first external line module is used for being connected with first operator equipment, and the second external line module is used for being connected with second operator equipment.
The first operator device may be a telecommunication network device, a mobile network device, a connected network device, etc., and is not specifically configured herein. The first operator equipment comprises IMS or NGN network systems, as well as the evolving network systems that emerge in the future.
The second operator device may be a telecommunication network device, a mobile network device, a connected network device, etc., and is not specifically configured herein. The second operator equipment comprises IMS or NGN network systems, as well as the evolving network systems that emerge in the future.
It should be noted that the first operator device and the second operator device may be the same or different, and are not specifically configured here.
The first outside line module and the first operator equipment can be connected in a wired mode or in a wireless mode, and specific setting is not needed.
In an alternative embodiment, the first outside line module comprises a first outside line 31, and the first outside line 31 is connected to the first operator device by wire.
Specifically, the first external line 31 is a telephone line, one end of the first external line 31 is connected to the mode selection switch 50, and the other end of the first external line 31 is wired to the first carrier device through the RJ11 interface 70.
In another alternative embodiment, the first outside line module includes a first VOIP gateway module 32, a first user authentication module 33 and a first WiFi module 34, the first VOIP gateway module 32 is connected to the mode selection switch 50 and the first WiFi module 34 respectively, the first user authentication module 33 is connected to the first WiFi module 34, and the first WiFi module 34 is wirelessly connected to the first operator device.
Specifically, the first VOIP gateway module 32 may detect signal tones such as off-hook of a telephone, DTMF signal, answer signal, busy tone, etc., may also generate signal tones such as ringing tone, dial tone, busy tone, incoming call alert tone, etc., may also perform modulation and demodulation of digital and analog signals, compression and decompression of signals, echo suppression, etc., and may communicate with the first operator device.
The first WiFi module 34 may be wirelessly connected to the first WiFi module through a set account name and a set login password by the external configuration terminal, and enable the first WiFi module to access the WiFi name and the password of the external internet of the environment where the network system of the first operator device is located. The first WiFi module 34 may be a 2.4G/5G wireless module, or a wireless module with other frequencies, and is not specifically configured online.
The first user authentication module 33 is configured with authentication information of the first operator device. The authentication information may be an IP address, a telephone number, a key for authenticating with the IMS or NGN network system, etc., which are not specifically set herein. The authentication information of the first operator device may be transmitted to the first user authentication module 33 through the external configuration terminal, thereby completing authentication of the first operator device.
The second outside line module 30 and the second operator device may be connected by wire or wirelessly, and is not specifically configured here.
In an alternative embodiment, the second outside line module comprises a second outside line 41, and the second outside line 41 is connected to the second operator device by wire.
Specifically, the second external line 41 is a telephone line, one end of the second external line 41 is connected to the mode selection switch 50, and the other end of the second external line 41 is wired to the second carrier device through an RJ11 interface 70.
In another alternative embodiment, the second outside-line module includes a second VOIP gateway module 42, a second user authentication module 43 and a second WiFi module 44, the second VOIP gateway module 42 is connected to the mode selection switch 50 and the second WiFi module 44 respectively, the second user authentication module 43 is connected to the second WiFi module 44, and the second WiFi module 44 is wirelessly connected to the second operator device.
Specifically, the second VOIP gateway module 42 may detect signal tones such as off-hook of a telephone, DTMF signal, answer signal, busy tone, etc., may also generate signal tones such as ringing tone, dial tone, busy tone, incoming call alert tone, etc., may also perform modulation and demodulation of digital and analog signals, compression and decompression of signals, echo suppression, etc., and may communicate with the second operator device.
The second WiFi module 44 may be wirelessly connected to the second WiFi module through the set account name and login password by the external configuration terminal, and enable the second WiFi module to access the WiFi name and password of the external internet of the environment where the network system of the second operator device is located. The second WiFi module 44 may be a 2.4G/5G wireless module, or a wireless module with other frequencies, and is not specifically configured online.
The second user authentication module 43 is configured with authentication information of the second operator device. The authentication information may be an IP address, a telephone number, a key for authenticating with the IMS or NGN network system, etc., which are not specifically set herein. The authentication information of the second operator device may be transmitted to the second user authentication module 43 through the external configuration terminal, thereby completing authentication of the second operator device.
The ringing detection module 20 is connected to the first external line module, the second external line module and the control module 10, respectively, and the ringing detection module 20 is configured to send ringing flag information to the control module 10 when detecting that the first external line module or the second external line module has a ringing signal. The ringing sign information includes the mark information of the outside line module corresponding to the ringing signal.
The ring detection module 20 includes a ring detection circuit for detecting an ac signal on the first outside line module or the second outside line module telephone line. When the first outside line module or the second outside line module has 75V-105V, 25HZ AC signal on the telephone line, it is considered as having ringing signal.
The control module 10 is connected to the mode selection switch 50, and the control module 10 is configured to select a working mode of the mode selection switch 50 according to the ringing flag information, so that the first external line module or the second external line module corresponding to the mark information of the external line module is turned on.
The control module 10 may be a CPU control module or an MPU control module, and is not provided here.
The mode selection switch 50 may be in a conduction mode with the first external wire module or in a conduction mode with the second external wire module. The mode selection switch 50 may be a relay or other components, and is not provided here.
The utility model provides a fixed telephone bimodulus communication selecting arrangement provides two kinds of communication channel through first outside line module and second outside line module, when one of them communication channel goes wrong, can switch to another communication channel and communicate to can provide safer and reliable service for the fixed telephone user.
It should be pointed out that, when the first operator and the second operator are not the same operator, the fixed-line dual-mode communication selection device provided by the utility model can realize the fixed-line service using the two operators, thereby being beneficial to the effective competition of different operators in the fixed-line service market; when first operator and second operator are same operator, the utility model provides a two kinds of communication channels can be realized to fixed telephone bimodulus communication selecting arrangement, when one of them communication channel goes wrong, can switch to another communication channel and communicate to can provide safer and reliable service for the fixed telephone user.
Optionally, the present invention provides a dual-mode communication selection device for a fixed-line phone, further comprising a power module 60, wherein the power module 60 is used for supplying power to the control module 10 and the ringing detection module 20.
It should be noted that, when the first outside line module is wirelessly connected with the first operator device, the power module 60 is further configured to supply power to the first VOIP gateway module 32, the first user authentication module 33, and the first WiFi module 34; the power module 60 is also used to supply power to the second VOIP gateway module 42, the second user authentication module 43 and the second WiFi module 44 when the second outside line module 30 is wirelessly connected with the second carrier device.
Optionally, mode select switch 50 is connected to RJ11 interface 70.
The mode selection switch 50 may be fixedly connected to one fixed telephone through one RJ11 interface 70, or the mode selection switch 50 may be fixedly connected to a plurality of fixed telephones through a plurality of RJ11 interfaces 70.
The RJ11 interface 70 connected to the fixed telephone is also connected to the control module 10, and the control module 10 can determine whether the fixed telephone is off-hook.
It should be noted that when the dual mode communication selection device of the fixed-line telephone has no power supply module 60 or has a power failure, the mode selection switch 50 selects to be on the second external line module, that is, the RJ11 interface is conducted with the second external line module, and the mode is the wired fixed-line telephone communication. When the dual-mode communication selection device of the fixed-line telephone has the power module 60, the mode selection switch 50 selects the first external line module, that is, the RJ11 interface is conducted with the first external line module, and the mode is the wireless fixed-line telephone communication.
Illustratively, as shown in fig. 2, the present invention provides a dual-mode communication selecting device for a fixed-line phone, comprising: a control module 10, a ring detection module 20, a first outside line module, a second outside line module, and a mode selection switch 50. The first outside line module comprises a first VOIP gateway module 32, a first user authentication module 33 and a first WiFi module 34, wherein the first VOIP gateway module 32 is respectively connected with the mode selection switch 50 and the first WiFi module 34, the first user authentication module 33 is connected with the first WiFi module 34, and the first WiFi module 34 is in wireless connection with first operator equipment. The second outside line module includes a second outside line 41, and the second outside line 41 is connected to the second carrier device by wire. The mode select switch 50 is connected to a fixed telephone via an RJ11 interface.
The power module 60 is used to supply power to the control module 10, the ring detection module 20, the first VOIP gateway module 32, the first user authentication module 33, and the first WiFi module 34.
In a first alternative embodiment, S100: if the control module 10 determines that the fixed telephone is off-hook, the control module 10 notifies the first VOIP gateway module 32 to detect whether the gateway of the first operator device is reachable; s200, if the gateway of the first operator device is not reachable, the ring detection module 20 notifies the control module 10 to select the mode selection switch 50 to the second external line module, and performs dialing, talking and hanging up according to the wired/fixed-line phone mode.
In a second alternative embodiment, S100: if the control module 10 determines that the fixed telephone is off-hook, the control module 10 notifies the first VOIP gateway module 32 to detect whether the gateway of the first operator device is reachable; s200: if the gateway of the first operator equipment can be reached, the first VOIP gateway module 32 sends a dial tone to the fixed telephone, the fixed telephone dials the called number, and the first VOIP gateway module 32 converts a DTMF signal dialed by the fixed telephone into an IP data packet after detecting the DTMF signal dialed by the fixed telephone, sends the IP data packet to a network system of the first operator equipment and connects the called number by the IP data packet; s300: if the first VOIP gateway module 32 detects that the called number of the network system of the first operator device responds, the first VOIP gateway module 32 connects the calling and called voice channels, and performs modulation and demodulation of digital and analog signals, compression and decompression of signals, echo suppression, and the like; s310: if the first VOIP gateway module 32 does not detect the called number response of the network system of the first operator device, and the first VOIP gateway module 32 detects that the called number is busy or not answered for a long time, then sends a busy tone to the host, and the calling party hangs up; s400: when the ringing detection module 20 detects that the second outside line module has a ringing signal, the first VOIP gateway module 32 sends an incoming call prompt tone on the first outside line module, and records an incoming call number, if the control module 10 detects that the fixed telephone is hooked up after a call is made, the control module 10 controls the mode selection switch 50 to select the second outside line module to hang up, and if the control module 10 does not detect that the fixed telephone is hooked up, S410 is executed; s410: the ringing detection module 20 does not detect that the second outside line module has a ringing signal, and determines whether the calling party or the called party hangs up first, if the calling party hangs up first, the ringing signal is sent to the network system of the first operator device and hangs up, and if the called party hangs up first, the ringing signal is sent to the calling party, and the calling party hangs up.
In a third alternative embodiment, S100: if the control module 10 determines that the fixed telephone is not off-hook, the ringing module detects that the second outside line module has a ringing signal; s200: the ringing detection module 20 informs the control module 10 to select the mode selection to the second outside line module, and the fixed telephone is off-hook for conversation; s300: when the ringing detection module 20 detects that the first outside line module has a ringing signal, the first VOIP gateway module 32 sends an incoming call prompt tone on the second outside line module, and records an incoming call number, if the control module 10 detects that the fixed telephone is hooked up after a call is made, the control module 10 controls the mode selection switch 50 to select the first outside line module to hang up, and if the control module 10 does not detect that the fixed telephone is hooked up, S400 is executed; s400: if the ringing detection module 20 does not detect that the first outside line module has a ringing signal, the calling and hanging-up are performed according to the wired fixed-line telephone mode.
In a fourth alternative embodiment, S100: if the control module 10 determines that the fixed telephone is not off-hook, the ringing module detects that the first external line module has a ringing signal; s200: the fixed telephone gets the machine to answer, the first VOIP gateway module 32 answers the calling speech channel, and carries on the modulation and demodulation of the signal digital and analog, the compression and decompression of the signal, the echo suppression, etc.; s300: when the ringing detection module 20 detects that the second outside line module has a ringing signal, the first VOIP gateway module 32 sends an incoming call prompt tone on the first outside line module, and records an incoming call number, if the control module 10 detects that the fixed telephone hook flash is detected, the control module 10 controls the mode selection switch 50 to select the second outside line module to carry out a call and then hang up, and if the control module 10 does not detect that the fixed telephone hook flash, S310 is executed; s310: the ringing detection module 20 does not detect that the second outside line module has a ringing signal, and determines whether the calling party or the called party hangs up first, if the calling party hangs up first, the ringing signal is sent to the network system of the first operator device and hangs up, and if the called party hangs up first, the ringing signal is sent to the calling party, and the calling party hangs up.
It should be noted that, in the dual-mode communication selection apparatus for the fixed-line phone shown in fig. 3, the first external line module is in wired connection with the first operator device, and the second external line module is in wireless connection with the second operator device, and the working principle of the dual-mode communication selection apparatus for the fixed-line phone is the same as that of the dual-mode communication selection apparatus for the fixed-line phone shown in fig. 2, and details are not described here.
The fixed-line dual-mode communication selection apparatus shown in fig. 4 is that the first external line module is in wired connection with the first operator device, and the second external line module is in wired connection with the second operator device, and the working principle of the first external line module and the second external line module shown in fig. 4 is the same as that of the second external line module shown in fig. 2, and details are not described here.
The fixed-line dual-mode communication selection apparatus shown in fig. 5 is configured such that the first external line module is wirelessly connected with the first operator device, and the second external line module is wirelessly connected with the second operator device, and the working principle of the first external line module and the working principle of the second external line module shown in fig. 4 are the same as the working principle of the first external line module shown in fig. 2, which is not described in detail herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A dual-mode communication selection device for a fixed-line telephone, comprising: the device comprises a control module, a ringing detection module, a first external line module, a second external line module and a mode selection switch;
the first external line module and the second external line module are respectively connected with the mode selection switch, the first external line module is used for being connected with first operator equipment, and the second external line module is used for being connected with second operator equipment;
the ringing detection module is respectively connected with the first external line module, the second external line module and the control module, and is used for sending ringing sign information to the control module when detecting that the first external line module or the second external line module has a ringing signal, wherein the ringing sign information comprises the mark information of the external line module corresponding to the ringing signal;
the control module is connected with the mode selection switch, and the control module is used for selecting the working mode of the mode selection switch according to the ringing sign information so as to conduct the first external line module or the second external line module corresponding to the marking information of the external line module.
2. The dual-mode communication selection device for the fixed-line telephone as claimed in claim 1, wherein the first external line module comprises a first external line, and the first external line is in wired connection with the first operator equipment; or the like, or, alternatively,
the first outside line module comprises a first VOIP gateway module, a first user authentication module and a first WiFi module, the first VOIP gateway module is respectively connected with the mode selection switch and the first WiFi module, the first user authentication module is connected with the first WiFi module, and the first WiFi module is in wireless connection with the first operator equipment.
3. The dual-mode communication selection apparatus for fixed-line phone as claimed in claim 2, wherein the first user authentication module is configured with authentication information of the first operator device.
4. The dual-mode communication selection device for fixed telephones as claimed in claim 2, wherein the first WiFi module is a 2.4G/5G wireless module.
5. The dual-mode communication selection device for the fixed-line telephone as claimed in claim 1, wherein the second outside line module comprises a second outside line, and the second outside line is in wired connection with the second operator device; or the like, or, alternatively,
the second external line module comprises a second VOIP gateway module, a second user authentication module and a second WiFi module, the second VOIP gateway module is respectively connected with the mode selection switch and the second WiFi module, the second user authentication module is connected with the second WiFi module, and the second WiFi module is in wireless connection with the second operator equipment.
6. The dual-mode communication selection apparatus for fixed-line phone as claimed in claim 5, wherein the second user authentication module is configured with a second key of the second operator device.
7. The dual-mode communication selection device for fixed telephones as claimed in claim 5, wherein the second WiFi module is a 2.4G/5G wireless module.
8. The dual-mode communication selection device for fixed telephones as claimed in any one of claims 1 to 7, further comprising a power module for supplying power to the control module and the ringing detection module.
9. The dual mode communication selection device for fixed telephones as claimed in any one of claims 1 to 7, wherein the mode selection switch is connected to an RJ11 interface.
10. The dual mode communication selection device for fixed telephones as claimed in any one of claims 1 to 7, wherein the mode selection switch is a relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121114147.5U CN215072558U (en) | 2021-05-21 | 2021-05-21 | Dual-mode communication selection device for fixed telephone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121114147.5U CN215072558U (en) | 2021-05-21 | 2021-05-21 | Dual-mode communication selection device for fixed telephone |
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| CN215072558U true CN215072558U (en) | 2021-12-07 |
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| CN202121114147.5U Active CN215072558U (en) | 2021-05-21 | 2021-05-21 | Dual-mode communication selection device for fixed telephone |
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