CN113572749A - VoLTE-based video calling method and system - Google Patents
VoLTE-based video calling method and system Download PDFInfo
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- 230000003993 interaction Effects 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 12
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention relates to a VoLTE-based video calling method and a VoLTE-based video calling system, which comprise the following steps: establishing connection with a user terminal with a high-definition call function based on an SIP (session initiation protocol) transmission protocol, and acquiring a call signaling sent by the user terminal in real time; shunting the acquired call signaling to acquire a call sign in the call signaling; if the calling mark is a video calling, initiating a calling request to a calling center and establishing a video room; adding the SIP signal stream of the user terminal as an input stream to the video room so that the user terminal and the video room are connected; and after the user terminal is successfully connected with the video room, playing a pre-recorded video of the call center in the video room so that the user can watch the recorded video through the user terminal and perform video interaction with the call center. The call center can directly make a video call to the user through the mobile phone number, so that the transmission is more stable and reliable, and the method has the advantages of convenience, rapidness and financial safety guarantee.
Description
Technical Field
The invention belongs to the technical field of converged communication, and particularly relates to a VoLTE-based video calling method and system.
Background
At present, most enterprises and groups adopt a telephone call center to establish audio telephones based on PSTN (public switched telephone network) by dialing a user mobile phone number. With the continuous development of communication technology, especially the continuous development of 4G and 5G technologies in recent years, the requirement of commercialized business on communication is higher and higher, especially in the financial industry, with the increasingly strict requirement of the country on double recording of video when opening an account for handling card business and insuring business, how to provide a video call center with convenient operation, low cost and guaranteed quality for society has become a problem that must be solved.
Therefore, the prior technical scheme adopts the scheme that a user mobile phone is dialed through a PSTN telephone firstly, then short messages are sent to a client, the client is required to download a corresponding specific APP, then the specific APP is bound by registering in the APP, and then screen-to-screen video calling is carried out. And under the existing communication system architecture of operators, the terminal can be disconnected during calling temporarily, and the internet surfing capability cannot be synchronously used during conversation, so that the network conversation based on the APP fails.
Disclosure of Invention
In order to solve the problems of poor stability, easy network disconnection, inconvenient operation and the like of internet video call in the prior art, the invention provides a VoLTE-based video calling method which has the characteristics of no dependence on the internet, higher stability, more convenient operation and the like.
According to the specific embodiment of the invention, the VoLTE-based video calling method comprises the following steps:
establishing connection with a user terminal with a high-definition call function based on an SIP (session initiation protocol) transmission protocol, and acquiring a call signaling sent by the user terminal in real time;
shunting the acquired call signaling to acquire a call sign in the call signaling;
if the calling mark is a video calling, initiating a calling request to a calling center and establishing a video room;
adding the SIP signal stream of the user terminal as an input stream to the video room so that the user terminal and the video room are connected;
and after the user terminal is successfully connected with the video room, playing a pre-recorded video of the call center in the video room so that the user can watch the recorded video through the user terminal and perform video interaction with the call center.
Further, the VoLTE-based video call method further includes:
and inquiring whether the video room has an idle video seat or not, and if not, continuing to play the recorded video.
Further, the VoLTE-based video call method further includes:
and if no idle video seat exists, continuing to inquire after a preset waiting time until the idle video seat is inquired.
Further, the VoLTE-based video call method further includes:
and if the idle seats exist, accessing the waiting call center seats into the video room.
Further, the VoLTE-based video call method further includes:
receiving an access request initiated by a call center, dialing to a third party contained in the access request to initiate a call, so that the SIP signal stream of the third party is added to a target video room as an input stream.
Further, the VoLTE-based video call method further includes:
and converging the video contents existing in the video room and outputting the converged video contents to a preset video server.
Further, the VoLTE-based video call method further includes:
and performing content processing including marking and rendering on the merged video based on the video server.
According to the specific embodiment of the present invention, a video call system based on VoLTE is provided, which includes: the system comprises a fusion communication unit, a protocol shunting unit, a switch unit and a video conference unit;
the converged communication unit is used for establishing connection with a user terminal with a high-definition call function based on an SIP transmission protocol and acquiring a call signaling sent by the user terminal in real time;
the protocol shunting unit is used for shunting the acquired call signaling to acquire a call mark in the call signaling, if the call mark is a video call, the switch unit is called to initiate a call request to a call center, and meanwhile, the switch unit calls the video conference unit to establish a video room;
the video conference unit is also used for adding the SIP signal stream of the user terminal to the video room as an input stream so as to enable the user terminal to establish connection with the video room;
and the switch unit is also used for playing a pre-recorded video of the call center in the video room after the user terminal is successfully connected with the video room, so that the user can watch the recorded video through the user terminal and perform video interaction with the call center.
The invention has the beneficial effects that: establishing connection with a user terminal with a high-definition call function based on an SIP (session initiation protocol) transmission protocol, and acquiring a call signaling sent by the user terminal in real time; shunting the acquired call signaling to acquire a call sign in the call signaling; if the calling mark is a video calling, initiating a calling request to a calling center and establishing a video room; adding the SIP signal stream of the user terminal as an input stream to the video room so that the user terminal and the video room are connected; and after the user terminal is successfully connected with the video room, playing a pre-recorded video of the call center in the video room so that the user can watch the recorded video through the user terminal and perform video interaction with the call center. The method comprises the steps of establishing connection with a call center through a VoLTE function based on a user terminal, extracting corresponding video call and audio call after corresponding shunting, separating out video signals to realize voice and video signal mixing, and not depending on an internet any more, wherein the call center can directly make a video call to a user through a mobile phone number, so that transmission is more stable and reliable, and the method has the advantages of convenience and rapidness and guarantee of financial safety of both parties for scenes needing recording and video, such as bank account opening and the like.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of a VoLTE-based video call method provided according to an example embodiment;
fig. 2 is a schematic diagram of a VoLTE-based video call system provided in accordance with an example embodiment.
Reference numerals
1-a user terminal; 2-a converged communication unit; 3-a protocol splitting unit; 4-a switch unit; 5-a video conference unit; 6-call center.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a video call method based on VoLTE, which specifically includes the following steps:
101. establishing connection with a user terminal with a high-definition call function based on an SIP (session initiation protocol) transmission protocol, and acquiring a call signaling sent by the user terminal in real time;
currently, three operators in China are connected to the IMS by default on newly provided fixed telephone lines, and are already transforming traditional PSTN lines. The telephone lines of the IMS system may carry SIP protocols including voice and video. The user can use the terminal such as a smart phone supporting the VoLTE function after signing a corresponding protocol of high-definition communication with a corresponding operator, and the network flow of the user cannot be used. The current video call and video conference systems transmit video streams based on the internet ip protocol, and require that a client at least has a browser or a specific APP.
102. Shunting the acquired call signaling to acquire a call sign in the call signaling;
the protocol shunting function can be realized by adopting a protocol shunt, such as freeswitch and other open source software, and is used for splitting a video signal in the SIP protocol for further comparison by configuring a shunting mode. For example, the source software freeswitch, in which the sofia-SIP module has a split code for the SIP signaling, and when sdp.video is equal to 1, the SIP ringing is a video call mode; when video is empty, the SIP ringing is an audio call mode. When the SDP is an audio signal, the SDP is forwarded to an audio server to perform conventional processing of a corresponding voice signaling.
103. If the calling mark is a video calling, initiating a calling request to a calling center and establishing a video room;
if the SDP is a video signal, a freeswell calls a PBX module to initiate a call request, and the call request can be realized by adopting an open-source freePBX.
104. Adding the SIP signal stream of the user terminal as an input stream to a video room so that the user terminal and the video room are connected;
and the PBX module calls the OWT module to process, calls a room-new interface in the OWT module to create a room, returns an OWT return result 200 after the room is successfully created, and obtains a room id returned by the OWT module. After the room id is obtained, adding the SIP stream of freeswich into the room, namely adding an input stream to the room created by OWT.
105. And after the user terminal is successfully connected with the video room, playing a pre-recorded video of the call center in the video room so that the user can watch the recorded video through the user terminal and perform video interaction with the call center.
After confirming that the SIP video is successfully added with stream, the OWT module returns a result 200 to the PBX. After the PBX confirms, the PBX/IVR module is called to play the recorded video IVR to the room, and at the moment, the user terminal can see the video IVR and can perform corresponding interaction.
Therefore, the video call can be directly dialed to the user by the seat through the mobile phone number through simple extension in the original traditional call center, and the video call has the advantages of convenience and rapidness and guarantee of financial safety of both parties for scenes needing recording and videoing, such as bank account opening and the like. And the terminal does not need to rely on the Internet, do not depend on the dns service and is not required to install a specific APP for more convenient use.
As a feasible implementation manner of the above embodiment, a room-new interface in the OWT module is called to create a room, and after the room is successfully created, the OWT returns a result 200 and obtains a room id returned by the OWT. The following script implementations may be used:
after the room id is obtained, adding the SIP stream of freeclick into the room, that is, adding an input stream to the room created by OWT:
it is understood that those skilled in the art can also use other scripts of functional modules to implement the processing procedure with the same function, and the invention is not limited herein.
In order to further optimize the technical solution, in another embodiment of the present invention, the video call method based on VoLTE includes the following steps:
201. establishing connection with a user terminal with a high-definition call function based on an SIP (session initiation protocol) transmission protocol, and acquiring a call signaling sent by the user terminal in real time;
202. shunting the acquired call signaling to acquire a call sign in the call signaling;
203. if the calling mark is a video calling, initiating a calling request to a calling center and establishing a video room;
204. adding the SIP signal stream of the user terminal as an input stream to the video room so that the user terminal and the video room are connected;
205. and after the user terminal is successfully connected with the video room, playing a pre-recorded video of the call center in the video room so that the user can watch the recorded video through the user terminal and perform video interaction with the call center.
206. And inquiring whether the video room has an idle video seat or not, and if no idle video seat exists, continuing to play the recorded video.
207. And if no idle video seat exists, continuing to inquire after the preset waiting time till the idle video seat is inquired.
208. And if the idle seats exist, accessing the waiting call center seats into the video room.
209. Receiving an access request initiated by a call center, dialing to a third party contained in the access request to initiate a call, so that the SIP signal stream of the third party is added to a target video room as an input stream.
210. And merging the video contents existing in the video room and outputting the merged video contents to a preset video server.
Specifically, as a feasible implementation manner of the above embodiment, the user inputs the landline number to be dialed through the intelligent terminal, the intelligent terminal dials the phone, and the operator exchanges the signaling through the IMS system;
when the signaling reaches a freeswell system, configuring a shunting mode for splitting a video signal in an SIP protocol for further comparison;
when sdp.video ═ 1, this SIP ringing is a video call mode. When the video is empty, the SIP ringing is an audio calling mode;
if the SDP is a video signal, calling the PBX module by freewash and initiating a call request;
calling an OWT module by the PBX module for processing, wherein a room-new interface in the OWT module is called to create a room, and when the room is successfully created, returning an OWT return result 200 and obtaining a room id returned by the OWT return result;
after a room id is obtained, adding an SIP stream of freeswich into the room, namely adding an input stream to a room created by the OWT;
after confirming that the SIP video is successfully added with stream, the OWT module returns a result 200 to the PBX. After the PBX confirms, calling a PBX/IVR module, and playing the recorded video IVR to the room, wherein at the moment, the user terminal can see the video IVR;
after the PBX module completes room creation and video addition, whether an idle video seat exists is inquired, if not, the video IVR is continuously played, and whether an idle seat exists is continuously inquired after 15 seconds; if the idle seat exists, initiating a call to the idle seat to request the seat to join the room;
the agent responds to the call and joins the room. Calling the OWT module again by the PBX, and adding a stream into the room to the room id specified in the OWT module;
if a third party, such as a consultant expert, such as a guardian of an insured person in an insurance application scenario, needs to be called at this time, a VoLTE call can be initiated by the PBX to interface with the second operator B. The step of adding the OWT video into the room is repeated once;
and after the PBX module confirms that the adding flow is successful, calling an output flow module of the OWT module, merging the VoLTE video of the user and the seat network video, then uniformly outputting, and inputting the appointed room id and the output address corresponding to the pingos. The OWT module merges and pushes the merged video content, and further processing of the video, such as color rendering, watermarking and the like, can be performed in the process.
The pingos video server can record and record the audio and video, and simultaneously record the VoLTE video and the seat video on the same picture, thereby meeting the requirements of the national bank and security supervision on the video recording of policemen, sales personnel or agents. The details of the description and the use of the pingos video server are shown in https:// githu.
Based on the same design concept, referring to fig. 2, an embodiment of the present invention further provides a video call system based on VoLTE, which can be used to execute the corresponding process of the video call method based on VoLTE provided by the foregoing embodiment, including: the system comprises a fusion communication unit 2, a protocol shunting unit 3, a switch unit 4 and a video conference unit 5;
the converged communication unit 2 is used for establishing connection with a user terminal with a high-definition call function based on an SIP transmission protocol and acquiring a call signaling sent by the user terminal in real time;
the protocol shunting unit 3 is used for shunting the acquired call signaling to acquire a call mark in the call signaling, if the call mark is a video call, the protocol shunting unit calls a switch unit to initiate a call request to a call center, and meanwhile, the switch unit calls a video conference unit to establish a video room;
the videoconference unit 5 is also configured to add the SIP signal stream of the user terminal to the video room as an input stream, so that the user terminal 1 and the video room are connected;
the switch unit 4 is further configured to play the pre-recorded video to the call center 6 in the video room after the user terminal 1 is successfully connected to the video room, so that the user can watch the recorded video through the user terminal 1 and interact with the call center.
The specific implementation manner of the video call system based on VoLTE provided in the foregoing embodiment may refer to the specific implementation manner of the video call method based on VoLTE, and the details of the present invention are not repeated herein.
In the video call method and system based on VoLTE provided by the embodiments of the present invention, based on the VoLTE signaling function of the telecom operator, the signaling is managed by splitting the voice signaling and the video signaling, the audio signaling is managed by the PBX system, and the video signaling is managed by the Open-source video processing service suite (Open WebRTC Toolkit (abbreviated as OWT)), so that the mixed flow of the voice and the video signal is realized. Compared with the traditional video call center, the method has the advantages of not depending on Internet service, not depending on dns service, not needing a terminal to install a specific APP and the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, 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 do not necessarily 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.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A VoLTE-based video call method is characterized by comprising the following steps:
establishing connection with a user terminal with a high-definition call function based on an SIP (session initiation protocol) transmission protocol, and acquiring a call signaling sent by the user terminal in real time;
shunting the acquired call signaling to acquire a call sign in the call signaling;
if the calling mark is a video calling, initiating a calling request to a calling center and establishing a video room;
adding the SIP signal stream of the user terminal as an input stream to the video room so that the user terminal and the video room are connected;
and after the user terminal is successfully connected with the video room, playing a pre-recorded video of the call center in the video room so that the user can watch the recorded video through the user terminal and perform video interaction with the call center.
2. The VoLTE-based video call method according to claim 1, further comprising:
and inquiring whether the video room has an idle video seat or not, and if not, continuing to play the recorded video.
3. The VoLTE-based video call method according to claim 2, further comprising:
and if no idle video seat exists, continuing to inquire after a preset waiting time until the idle video seat is inquired.
4. The VoLTE based video call method of claim 3, further comprising:
and if the idle seats exist, accessing the waiting call center seats into the video room.
5. The VoLTE-based video call method according to claim 1, further comprising:
receiving an access request initiated by a call center, dialing to a third party contained in the access request to initiate a call, so that the SIP signal stream of the third party is added to a target video room as an input stream.
6. VoLTE based video call method according to any of claims 1 to 5, further comprising:
and converging the video contents existing in the video room and outputting the converged video contents to a preset video server.
7. The VoLTE based video call method of claim 6, further comprising:
and performing content processing including marking and rendering on the merged video based on the video server.
8. A VoLTE-based video call system, comprising: the system comprises a fusion communication unit, a protocol shunting unit, a switch unit and a video conference unit;
the converged communication unit is used for establishing connection with a user terminal with a high-definition call function based on an SIP transmission protocol and acquiring a call signaling sent by the user terminal in real time;
the protocol shunting unit is used for shunting the acquired call signaling to acquire a call mark in the call signaling, if the call mark is a video call, the switch unit is called to initiate a call request to a call center, and meanwhile, the switch unit calls the video conference unit to establish a video room;
the video conference unit is also used for adding the SIP signal stream of the user terminal to the video room as an input stream so as to enable the user terminal to establish connection with the video room;
and the switch unit is also used for playing a pre-recorded video of the call center in the video room after the user terminal is successfully connected with the video room, so that the user can watch the recorded video through the user terminal and perform video interaction with the call center.
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Application publication date: 20211029 |