CN107959671A - Signal transmission method and conference terminal - Google Patents
Signal transmission method and conference terminal Download PDFInfo
- Publication number
- CN107959671A CN107959671A CN201711077722.7A CN201711077722A CN107959671A CN 107959671 A CN107959671 A CN 107959671A CN 201711077722 A CN201711077722 A CN 201711077722A CN 107959671 A CN107959671 A CN 107959671A
- Authority
- CN
- China
- Prior art keywords
- agreement
- demand signalling
- meeting
- conference terminal
- intercepted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H04L65/1106—Call signalling protocols; H.323 and related
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/256—NAT traversal
- H04L61/2564—NAT traversal for a higher-layer protocol, e.g. for session initiation protocol [SIP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
- H04L63/0236—Filtering by address, protocol, port number or service, e.g. IP-address or URL
-
- 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
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
Abstract
The present invention relates to technical field of data transmission, discloses a kind of signal transmission method and conference terminal, and signal transmission method comprises the following steps：Pass through the first PORT COM and send the demand signalling based on H.323 agreement to meeting entity；Judge whether the demand signalling based on H.323 agreement is intercepted；When the demand signalling based on H.323 agreement is intercepted, passes through and switch to the second PORT COM and send the demand signalling based on preset protocol to meeting entity, wherein, preset protocol and H.323 agreement to differ only in TPKT protocol headers different.The present invention is by setting the second PORT COM and preset protocol; when ensuring that the demand signalling based on standard H.323 agreement is intercepted by NAT device; the second PORT COM can be passed through and send the demand signalling based on preset protocol to meeting entity; it ensure that the demand signalling based on preset protocol will not be identified and intercepted by NAT device, ensure that meeting is smoothed out.
Description
Technical field
The present invention relates to technical field of data transmission, and in particular to a kind of signal transmission method and conference terminal.
Background technology
H.323 agreement is a kind of audio video transmission agreement of standard, and it is logical to be that current most of video conference can all use
Believe agreement.It is made of one group of agreement, including for establish calling H.225, for control H.245, for convention
H.323 and for supplementary service H.450.X etc..
At present, consider for network security, most enterprises can all make when carrying out video conference using H.323 agreement
With the NAT device of router, fire wall etc, these NAT device are respectively provided with the function of H.323 application layer gateway (ALG), therefore
Can be with automatic identification H.323 agreement, and the H.323 signaling to being transmitted by it is managed, changes or limits.Due to tradition
Fire wall in safety regulation and corresponding state table be set by network administrator, and arrived involved in H.323 communicating
IP address and port are dynamic changes, and network administrator can not timely and accurately set corresponding safety regulation, therefore, hold very much
Easily lead to when signalling is carried out between H.323 entity, normal signaling is intercepted or is tampered without reason, so that video
Meeting is normally carried out.
The content of the invention
For this reason, the technical problems to be solved by the invention are：Existing H.323 entity is in communication process, and signaling is by nothing
Therefore intercept.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
The present invention provides a kind of signal transmission method, comprise the following steps：
Pass through the first PORT COM and send the demand signalling based on H.323 agreement to meeting entity；
Judge whether the demand signalling based on H.323 agreement is intercepted；
When the demand signalling based on H.323 agreement is intercepted, by switching to the second PORT COM to the meeting
Discuss entity and send the demand signalling based on preset protocol, wherein, the preset protocol is differed only in the H.323 agreement
TPKT protocol headers are different.
Alternatively, the step that whether demand signalling based on H.323 agreement described in the judgement is intercepted includes：
Judge whether the demand signalling based on H.323 agreement sends failure；
When judging result sends failure for the demand signalling based on H.323 agreement, it is determined that described based on H.323
The demand signalling of agreement is intercepted.
Alternatively, the step of whether demand signalling based on H.323 agreement described in the judgement sends unsuccessfully includes：
Judge whether to receive the acknowledgement information for sending failure；
When receiving the acknowledgement information for sending failure, it is determined that the demand signalling based on H.323 agreement, which is sent, to be lost
Lose.
Alternatively, further include：
When judging result is that the demand signalling based on H.323 agreement is not intercepted, judge be in preset time
It is no to receive response signaling；
When judging result is that response signaling is not received by preset time, it is determined that response signaling is intercepted, and is performed
Switch to the second PORT COM to the meeting entity send demand signalling based on preset protocol the step of.
Alternatively, the meeting entity is conference terminal or meeting platform, wherein, it is described by the first PORT COM to
Meeting entity, which sends the step of demand signalling based on H.323 agreement, to be included：
H.225 exhaling based on H.323 agreement is initiated to conference terminal or meeting platform by first PORT COM
It is demand signalling；
H.245 please based on H.323 agreement is initiated to conference terminal or meeting platform by first PORT COM
Seek signaling.
Alternatively, the meeting entity is conference terminal, wherein, sent out in first PORT COM that passes through to meeting entity
It is further comprising the steps of before the step of sending the demand signalling based on H.323 agreement：
Inquiry request is sent to meeting platform, the inquiry request is used for the address for inquiring about the conference terminal；
Receive the address for the conference terminal that the meeting platform returns and for representing that the conference terminal supports institute
State the mark of preset protocol.
Present invention also offers a kind of conference terminal, including：
Sending module, the demand signalling based on H.323 agreement is sent for passing through the first PORT COM to meeting entity；
Judgment module, for judging whether the demand signalling based on H.323 agreement is intercepted；
Wherein, the sending module is additionally operable to, when the demand signalling based on H.323 agreement is intercepted, pass through switching
The demand signalling based on preset protocol is sent to the second PORT COM to the meeting entity, wherein, the preset protocol and institute
That states H.323 agreement differs only in TPKT protocol headers difference.
Alternatively, the judgment module includes：
First judging unit, for judging whether the demand signalling based on H.323 agreement sends failure；
First determination unit, when sending failure for judging result for the demand signalling based on H.323 agreement, determines
The demand signalling based on H.323 agreement is intercepted.
Alternatively, first judging unit includes：
Judgment sub-unit, for judging whether to receive the acknowledgement information for sending failure；
Determination subelement, for when receiving the acknowledgement information for sending failure, it is determined that described based on H.323 agreement
Demand signalling sends failure.
Alternatively, further include：
Second judging unit, for when the demand signalling based on H.323 agreement is not intercepted, judging when default
It is interior whether to receive response signaling；
Second determination unit, for when judging result is to be not received by response signaling in preset time, determining to ring
Signaling is answered to be intercepted；
The sending module is additionally operable to, when response signaling is intercepted, pass through and switch to the second PORT COM to the meeting
Entity sends the demand signalling based on preset protocol, wherein, the preset protocol is differed only in the H.323 agreement
TPKT protocol headers are different.
The above-mentioned technical proposal of the present invention has the following advantages relative to the prior art：
Signal transmission method provided by the invention, by setting the second PORT COM and preset protocol, it is ensured that based on mark
, can be by the when the NAT device that the demand signalling of accurate H.323 agreement is supported H.323ALG (application layer gateway) function intercepts
Two PORT COMs send the demand signalling based on preset protocol to meeting entity.Due to preset protocol and standard H.323 agreement
Differ only in TPKT protocol headers, physical contents all same.Therefore, on the one hand, ensure that the demand signalling based on preset protocol
The NAT device that will not be supported H.323ALG (application layer gateway) function identifies and intercepts that demand signalling can be smoothly transmitted to
The meeting entity of opposite end, ensures being smoothed out for meeting, so that meeting will not gratuitously be held unsuccessfully, or the meeting having built up
View disconnects without reason；On the other hand, the physical contents of demand signalling will not change, and it is accurate in signalling interactive process to ensure that
Property.
Signal transmission method provided by the invention, when judging based on not being intercepted in the demand signalling of H.323 agreement, also
Judge whether receiving response signaling in preset time, if being not received by response signaling, be judged as response letter
Order is intercepted by NAT device, performs switch to the second PORT COM to request of the meeting entity transmission based on preset protocol at this time
The step of signaling.Thus, the present invention is judged respectively from demand signalling and the whether intercepted these two aspects of response signaling, is ensured
When demand signalling or the intercepted any signaling of response signaling, preset protocol can be switched in time and sends demand signalling, ensures meeting
View is smoothed out.
Signal transmission method provided by the invention, the feelings of registration were carried out suitable for conference terminal on meeting platform
Shape.At this time, before local side sends the demand signalling based on H.323 agreement to opposite end, it is necessary first to sent to meeting platform
The address of opposite end conference terminal is inquired about, when receiving the address of opposite end conference terminal of meeting platform return, then to the address
Send demand signalling.When local side receives at the same time supports the mark of preset protocol for opposite end conference terminal, then it represents that right
Conference terminal is held to support preset protocol, it is when follow-up judging result is intercepted for the demand signalling based on H.323 agreement, then local
End can directly be switched to the second PORT COM and send the demand signalling based on preset protocol to opposite end conference terminal.
Conference terminal provided by the invention, its sending module can judge the request based on H.323 agreement in judgment module
When signaling is intercepted, the second PORT COM is switched to from the first PORT COM and sends the request based on preset protocol to meeting entity
Signaling.Due to preset protocol and standard, H.323 agreement differs only in TPKT protocol headers, physical contents all same.Therefore, one
Aspect, ensure that the demand signalling based on preset protocol will not be supported the NAT device of H.323ALG (application layer gateway) function
Identify and intercept, demand signalling can smoothly be transmitted to the meeting entity of opposite end, so that meeting will not disconnect without reason；The opposing party
Face, the physical contents of demand signalling will not change, and ensure that the accuracy in signalling interactive process.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 be by standard H.323 agreement carry out Signalling exchange schematic diagram；
Fig. 2 is the flow chart for the signal transmission method that the embodiment of the present invention 1 provides；
Fig. 3 is the flow chart for the signal transmission method that the embodiment of the present invention 2 provides；
Fig. 4 is the structure diagram for the conference terminal that the embodiment of the present invention 6 provides；
Fig. 5 is the concrete structure schematic diagram of the judgment module in the conference terminal that the embodiment of the present invention 6 provides；
Fig. 6 is the concrete structure schematic diagram of the first judging unit in the conference terminal that the embodiment of the present invention 6 provides；
Fig. 7 is the concrete structure schematic diagram of the sending module in the conference terminal that the embodiment of the present invention 6 provides；
Fig. 8 is the another structure diagram in the conference terminal that the embodiment of the present invention 6 provides；
Fig. 9 is the structure diagram for the conference terminal that the embodiment of the present invention 7 provides.
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to which explanation, term " first ", " second ", " the 3rd " are only used for description purpose,
And it is not intended that instruction or hint relative importance.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other into conflict.
The embodiment of the present invention is mainly to be applied to using in the standard meeting that H.323 agreement carries out, and Fig. 1 is shown using mark
Accurate H.323 agreement carries out the course of work of Signalling exchange, and T1 and T2 are two meeting entities in meeting, and meeting entity can be
Meeting platform or conference terminal, wherein meeting platform and conference terminal can be videoconferencing platform and video conference terminal, depending on
Frequency conference terminal can be mobile terminal either computer terminal.H.323 communication process is broadly divided into H.225 signalling interactive process
(including RAS Signalling exchanges and Q.931 Signalling exchange), H.245 signalling interactive process and media flow transmission process.
In order to which network considers completely, usually, in H.323 signalling interactive process, pass through having shown in Fig. 1
H.323 the NAT device automatic identification of application layer gateway (ALG) function H.323 agreement, and pipe is carried out to the H.323 signaling of transmission
Reason, modification or limitation.
Embodiment 1
A kind of signal transmission method is present embodiments provided, specifically initiates to perform by conference terminal, can be shown in Fig. 1
Meeting entity T1 and T2 either end perform, opposite end be meeting entity corresponding with the executive agent, can be conference terminal
Or meeting platform.As shown in Fig. 2, comprise the following steps：
Step S11, pass through the first PORT COM and send the demand signalling based on H.323 agreement to meeting entity.
Wherein, the first PORT COM is the TCP server port for being used for transmission H.323 signaling, for different H.323 letters
Type is made, the first PORT COM is also divided into different communication subports.For example, when conference terminal sends H.225 signaling, by right
The H.225 signaling communication subport answered is transmitted, and when sending H.245 signaling, is carried out by the corresponding subport that H.245 communicates
Transmission.Meanwhile meeting entity also has corresponding communication subport, for receiving the demand signalling based on H.323 agreement.
Step S12, judge whether the demand signalling based on H.323 agreement is intercepted.
Due to that can pass through the NAT device with H.323 application layer gateway (ALG) during signalling, it can be certainly
It is dynamic to identify H.323 agreement, and the H.323 signaling of transmission is managed, changed or limited, therefore should be based on H.323 agreement
Demand signalling have intercepted risk.
When judging result is intercepted for the demand signalling based on H.323 agreement, step S13 is performed, otherwise performs other
Operation.
In the present embodiment, other operations can be to wait the meeting entity response of opposite end.
Step S13, pass through switch to the second PORT COM to meeting entity send the demand signalling based on preset protocol, its
In, preset protocol and H.323 agreement to differ only in TPKT protocol headers different.
Specifically, the second PORT COM is the TCP server port for being used for transmission the demand signalling based on preset protocol, pin
To the different signaling types based on preset protocol, the second PORT COM is divided into different communication subports, meanwhile, meeting entity
Also there is corresponding communication subport, for receiving the demand signalling of the different signaling types based on preset protocol.
Preset protocol and H.323 agreement differ only in that TPKT protocol headers are different, both physical contents are identical, this hair
In bright embodiment, preset protocol is defined as KH.323.Specifically, TPKT protocol headers mainly including TPKT agreements version number,
Content type and TPKT protocol lengths, in the present embodiment, the byte section that can pass through in TPKT protocol lengths is inserted into some words
Section, to change original form of standard H.323 TPKT protocol headers of agreement, so that signaling of the transmission based on the preset protocol
When, NAT device None- identified goes out the preset protocol, it is not intercepted.
It should be noted that it can also modify to other byte sections of TPKT protocol headers, as long as ensureing physical contents
It is constant.
Signal transmission method provided in this embodiment is by setting the second PORT COM and preset protocol, it is ensured that based on mark
, can be by the when the NAT device that the demand signalling of accurate H.323 agreement is supported H.323ALG (application layer gateway) function intercepts
Two PORT COMs send the demand signalling based on preset protocol to meeting entity.Due to preset protocol and standard H.323 agreement
Differ only in TPKT protocol headers, physical contents all same.Therefore, on the one hand, ensure that the demand signalling based on preset protocol
The NAT device that will not be supported H.323ALG (application layer gateway) function identifies and intercepts that demand signalling can be smoothly transmitted to
The meeting entity of opposite end, so that meeting will not disconnect without reason；On the other hand, the physical contents of demand signalling will not change,
It ensure that the accuracy in signalling interactive process.
It should be noted that above-mentioned first PORT COM and the second PORT COM are provided separately when being conducive to practical operation
The signaling based on H.323 agreement and the signaling based on preset protocol are distinguished, but a PORT COM can also be merged into, equally
It can achieve the object of the present invention.
Embodiment 2
A kind of signal transmission method is present embodiments provided, specifically initiates to perform by conference terminal, by regarding shown in Fig. 1
The either end of frequency meeting entity T1 and T2 perform, and opposite end is meeting entity corresponding with the executive agent, can be conference terminal
Or meeting platform.As shown in figure 3, comprise the following steps：
Step S21, pass through the first PORT COM and send the demand signalling based on H.323 agreement to meeting entity.The step
Identical with the step S11 in embodiment 1, details are not described herein.
In the present embodiment, step S21 specifically includes following steps：
Step S211, pass through the first PORT COM to initiate based on H.323 agreement to conference terminal or meeting platform
H.225 call request signaling.Wherein, as shown in Figure 1, H.225 call request signaling include Q931TCP connection signalings and
H.225Setup signaling.
Step S212, pass through the first PORT COM to initiate based on H.323 agreement to conference terminal or meeting platform
H.245 demand signalling.Wherein, as shown in Figure 1, H.245 demand signalling includes H.245TCP connecting signaling, H.245 capabilities exchange
H.245, signaling, open the signalings such as logical channel.
It should be noted that above-mentioned different demand signalling is to be transmitted one by one, when first demand signalling receives pair
After the success response of the meeting entity at end, Article 2 demand signalling is retransmited.
Step S22, judge whether the demand signalling based on H.323 agreement is intercepted.
In the present embodiment, step S22 comprises the following steps：
Step S221, judge whether the demand signalling based on H.323 agreement sends failure.When judging result be based on
H.323 when the demand signalling of agreement sends failure, step S222 is performed；Otherwise the demand signalling based on H.323 agreement is determined not
It is intercepted, and perform step S23.
It should be noted that H.225/H.245TCP connections of the step S221 usually between local side and opposite end is
Carried out in the case of foundation.
In the present embodiment, step S221 comprises the following steps：
Step S2211, judge whether to receive the acknowledgement information for sending failure.When judging result fails to receive transmission
Acknowledgement information when, then perform step S2212；Otherwise other operations are performed.In the present embodiment, other operations can be wait pair
The meeting entity response at end.
It should be noted that the acknowledgement information for sending success or failure refers to go to send the knot of signaling using web socket
Fruit is success or failure.
Step S2212, determine that the demand signalling based on H.323 agreement sends failure.
Step S222, determine that the demand signalling based on H.323 agreement is intercepted, perform step S25.
Step S23, judge whether receive response signaling in preset time.When judging result be in preset time not
Response signaling is received, then performs step S24；Otherwise other operations are performed.In the present embodiment, other operations perform step to return
Rapid S21.
Step S24, determine that response signaling is intercepted, perform step S25.
Step S25, pass through switch to the second PORT COM to meeting entity send the demand signalling based on preset protocol, its
In, preset protocol and H.323 agreement to differ only in TPKT protocol headers different.The step and the step S13 phases in embodiment 1
Together, details are not described herein.
Signal transmission method provided by the invention, when judging based on not being intercepted in the demand signalling of H.323 agreement, also
Judge whether receiving response signaling in preset time, if being not received by response signaling, be judged as response letter
Order is intercepted by NAT device, performs switch to the second PORT COM to request of the meeting entity transmission based on preset protocol at this time
The step of signaling.Thus, the present invention is judged respectively from demand signalling and the whether intercepted these two aspects of response signaling, is ensured
When demand signalling or the intercepted any signaling of response signaling, preset protocol can be switched in time and sends demand signalling, ensures meeting
View is smoothed out.
It should be noted that in the present embodiment, it is further comprising the steps of before step S25：Judge that the meeting of opposite end is real
Whether body supports the demand signalling based on preset protocol.When judging result is supported based on preset protocol for the meeting entity of opposite end
Demand signalling, then perform step S25, otherwise, does not perform step S25, but disconnect the conference terminal or meeting platform with opposite end
Connection.
Specifically, it can be determined that whether carried in the response signaling that the meeting entity of opposite end sends over
The nonstandard contents of nonStandardData, to identify the support to preset protocol.In this way, when local side is judged based on H.323 agreement
Demand signalling it is intercepted when, can know support situation of the opposite end to preset protocol in advance, then decide whether to carry out step
S25。
Embodiment 3
A kind of signal transmission method is present embodiments provided, specifically initiates to perform by conference terminal, can be shown in Fig. 1
The either end of meeting entity T1 and T2 perform, opposite end is meeting entity corresponding with the executive agent, is meeting in the present embodiment
Discuss terminal.Actuating station and opposite end in the present embodiment are the conference terminal registered on meeting platform.Therefore, the present embodiment
The signal transmission method of offer relative to the signal transmission method in embodiment 1 or embodiment 2, step S11 or step S21 it
Before, it is further comprising the steps of：
Step S31, inquiry request is sent to meeting platform, inquiry request is used for the address for inquiring about conference terminal.
Step S32, the address for the conference terminal that meeting platform returns is received and for representing that conference terminal supports default association
The mark of view.Wherein, represent conference terminal support preset protocol is identified as the nonstandard contents of a nonStandardData.
Above-mentioned signal transmission method is suitable for the situation that conference terminal carried out registration on meeting platform.At this time, exist
Local side is sent to opposite end before the demand signalling based on H.323 agreement, it is necessary first to sends inquiry opposite end meeting to meeting platform
The address of terminal is discussed, request letter is sent when receiving the address of opposite end conference terminal of meeting platform return, then to the address
Order.When local side receives at the same time supports the mark of preset protocol for opposite end conference terminal, then it represents that the conference terminal of opposite end
Support preset protocol, when follow-up judging result is intercepted for the demand signalling based on H.323 agreement, then local side can be direct
It is switched to the second PORT COM and sends the demand signalling based on preset protocol to opposite end conference terminal.
Embodiment 4
Present embodiments provide register flow path of the conference terminal on meeting platform in a kind of above-described embodiment 3, including with
Lower step：
1) meeting platform is bound and enabled at the same time based on the standard H.323 service unit of agreement and clothes based on preset protocol
Business unit.Specifically, based on standard H.323 the service unit of agreement and service unit based on preset protocol have respectively it is a set of
Hardware device, including multipoint control unit (MCU), multipoint controller (MC), multipoint processor (MP), gateway and pass are kept.
Can also be by the hardware device deployment of two kinds of agreements together.Meeting platform is respectively connected to transmission standard H.323 signaling
First PORT COM and the second PORT COM for being used for transmission the signaling based on preset protocol, to distinguish different service units.
2) conference terminal sends registration request (RRQ) to the gatekeeper, and one is carried in registration request signaling
The nonstandard contents of nonStandardData, to identify support of the conference terminal to preset protocol.
3) after gatekeeper receives the registration request of conference terminal, accreditation verification (RCF) is sent to conference terminal, and it is true in registration
Recognize in signaling to carry and meeting H.323 outside the address of the first PORT COM of agreement, is also carried based on standard bound in meeting platform
Discuss the address of the second PORT COM based on preset protocol bound in platform.
4) conference terminal preserves received address information, in case follow-up use.
Embodiment 5
A kind of a kind of embodiment for signal transmission method that the present embodiment provides for above-described embodiment 3, wherein,
Hereinafter, local side is referred to as the first conference terminal, and opposite end is referred to as the second conference terminal, specifically includes following steps：
1) the first conference terminal initiates the address of access request (ARQ) the second conference terminal of inquiry to meeting platform.
2) meeting platform returns to the address of the second conference terminal in access confirms (ACF) response, and carries the second meeting
The support mark of terminal-pair preset protocol.
3) the first PORT COM of the first conference terminal binding acquiescence is sent based on H.323 agreement to the second view terminal
H.225SETUP call request signaling.
4) the second conference terminal receives the H.225SETUP call request of the first conference terminal, initiates to connect to meeting platform
Enter the address that the first conference terminal is inquired about in request (ARQ).
5) meeting platform returns to the address of the first conference terminal in access confirms (ACF) response, and carries the first meeting
The support mark of terminal-pair preset protocol.
6) the second conference terminal sends the H.225CONNECT response signaling based on H.323 agreement to the first conference terminal,
And optionally the nonstandard contents of a nonStandardData are carried wherein, to identify its support to preset protocol.
7) the first conference terminal initiates the connection signalings of TCP H.245 based on H.323 agreement to the second conference terminal, and
Send H.245 scheduling request.
8) if the first conference terminal is successfully transmitted H.245 scheduling request, jump procedure 9)；If the first conference terminal fails
When being successfully transmitted H.245 scheduling request, then step 10) is performed.
9) after the second conference terminal receives the H.245 demand signalling of the first conference terminal, if successfully seriatim to first
The demand signalling of conference terminal is recognized response, then call setup；If sending response failure, step 10) is jumped to.
10) calling of the first conference terminal, which is hung up, (disconnects and being H.245TCP connected with the first PORT COM, and by H.225
Connect drop calls), and it is due to not receive the response of the second conference terminal or believe to be indicated in the reason for calling is hung up
Make demand signalling send failure (i.e. signaling is intercepted), jump to step 11).
11) the first conference terminal binds the second PORT COM, and the request based on preset protocol is sent to the second conference terminal
Signaling.
Embodiment 6
Present embodiments provide a kind of conference terminal using the signal transmission method provided in above-described embodiment, such as Fig. 4
It is shown, including sending module 61 and judgment module 62.Wherein,
Sending module 61 is used to pass through the first PORT COM to demand signalling of the meeting entity transmission based on H.323 agreement.
Wherein, the first PORT COM is the TCP server port for being used for transmission H.323 signaling, for different H.323 signaling types,
First PORT COM is also divided into different communication subports.For example, when sending H.225 signaling, led to by corresponding H.225 signaling
News subport is transmitted, and when sending H.245 signaling, is transmitted by corresponding H.245 communication subport.Meanwhile meeting
Entity also has corresponding communication subport, for receiving the demand signalling based on H.323 agreement.
Judgment module 62 is used to judge whether the demand signalling based on H.323 agreement is intercepted；
Wherein, sending module 61 is additionally operable to when the demand signalling based on H.323 agreement is intercepted, by switching to second
PORT COM sends the demand signalling based on preset protocol to meeting entity, wherein, the difference of preset protocol and H.323 agreement is only
It is TPKT protocol headers difference.
Specifically, the second PORT COM is the TCP server port for being used for transmission the demand signalling based on preset protocol, pin
To the different signaling types based on preset protocol, the second PORT COM is divided into different communication subports, meanwhile, meeting entity
Also there is corresponding communication subport, for receiving the demand signalling of the different signaling types based on preset protocol.
Preset protocol and H.323 agreement differ only in that TPKT protocol headers are different, both physical contents are identical.Specifically
Ground, TPKT protocol headers mainly include version number, content type and the TPKT protocol lengths of TPKT agreements, can in the present embodiment
To be inserted into some bytes by the byte section in TPKT protocol lengths, to change the original of standard H.323 TPKT protocol headers of agreement
There is form, so that during signaling of the transmission based on the preset protocol, NAT device None- identified goes out the preset protocol, not to it
Intercepted.
The sending module 61 of the conference terminal can judge that the demand signalling based on H.323 agreement is blocked in judgment module 62
When cutting, the second PORT COM is switched to from the first PORT COM and sends the demand signalling based on preset protocol to meeting entity.By
In preset protocol and standard, H.323 agreement differs only in TPKT protocol headers, physical contents all same.Therefore, on the one hand, protect
The demand signalling based on preset protocol is demonstrate,proved and will not be supported the NAT device of H.323ALG (application layer gateway) function and identified and block
Cut, demand signalling can smoothly be transmitted to the meeting entity of opposite end, so that meeting will not disconnect without reason；On the other hand, request letter
The physical contents of order will not change, and ensure that the accuracy in signalling interactive process.
Preferably, as shown in figure 5, judgment module 62 includes the first judging unit 621 and the first determination unit 622.Wherein,
First judging unit 621 is used to judge whether the demand signalling based on H.323 agreement sends failure；
First determination unit 622 is used to, when judging result sends failure for the demand signalling based on H.323 agreement, determine
Demand signalling based on H.323 agreement is intercepted.
Preferably, as shown in fig. 6, the first judging unit 621 includes judgment sub-unit 6211 and determination subelement 6212.Its
In,
Judgment sub-unit 6211 is used to judge whether to receive the acknowledgement information for sending failure.
Determination subelement 6212 is used to, when receiving the acknowledgement information for sending failure, determine asking based on H.323 agreement
Signaling is asked to send failure.
Preferably, the second judging unit and the second determination unit are further included.
Second judging unit is used to, when the demand signalling based on H.323 agreement is not intercepted, judge in preset time
Whether response signaling is received；
Second determination unit is used to, when judging result is to be not received by response signaling in preset time, determine response
Signaling is intercepted；
Sending module is additionally operable to when response signaling is intercepted, and is passed through and is switched to the second PORT COM to the transmission of meeting entity
Demand signalling based on preset protocol, wherein, preset protocol and H.323 agreement to differ only in TPKT protocol headers different.
Preferably, meeting entity is other conference terminals or meeting platform, as shown in fig. 7, sending module 61 includes the
One transmitting element 611 and the second transmitting element 612.Wherein,
First transmitting element 611 initiates to be based on for passing through the first PORT COM to other conference terminals or meeting platform
H.323 the H.225 call request signaling of agreement；
Second transmitting element 612 initiates to be based on for passing through the first PORT COM to other conference terminals or meeting platform
H.323 the H.245 demand signalling of agreement.
Preferably, meeting entity is other conference terminals, as shown in figure 8, further including 601 He of query unit in the present embodiment
Receiving unit 602.Wherein,
Query unit 601 is used to send inquiry request to meeting platform, and inquiry request is used to inquire about other conference terminals
Address；
Receiving unit 602 is used to receive the address of other conference terminals of meeting platform return and for representing other meetings
Terminal supports the mark of preset protocol.
Embodiment 7
Present embodiments provide a kind of conference terminal, including one or more processors 71 and memory 72, in Fig. 9 with
Exemplified by one processor 71.
Processor 71 can be central processing unit (Central Processing Unit, CPU).Processor 71 can be with
For other general processors, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
The chips such as discrete hardware components, or the combination of above-mentioned all kinds of chips.General processor can be microprocessor or the processing
Device 71 can also be any conventional processor etc..
Memory 72 is used as a kind of non-transient computer readable storage medium storing program for executing, available for storing non-transient software program, non-
Transient computer executable program and module, such as the corresponding programmed instruction/mould of the signal transmission method in the embodiment of the present invention
Block.Processor 71 is stored in non-transient software program, instruction and module in memory 72 by operation, so as to perform service
The various function application of device and data processing, that is, realize the signal transmission method in above-described embodiment.
Memory 72 can include storing program area and storage data field, wherein, storing program area can storage program area,
At least one required application program of function；Storage data field can store the use institute according to the running gear of multiservice system
Data of establishment etc..In addition, memory 72 can include high-speed random access memory, non-transient memory can also be included,
A for example, at least disk memory, flush memory device or other non-transient solid-state memories.In certain embodiments, deposit
Reservoir 72 is optional including can be by network connection extremely relative to the remotely located memory of processor 71, these remote memories
Using the conference terminal of above-mentioned signal transmission method.The example of above-mentioned network includes but not limited to internet, intranet, office
Domain net, mobile radio communication and combinations thereof.
One or more of modules are stored in the memory 72, when by one or more of processors 71
During execution, the signal transmission method described in embodiment 1 is performed.
The said goods can perform the method that the embodiment of the present invention is provided, and possesses the corresponding function module of execution method and has
Beneficial effect.The ins and outs of detailed description, the correlation that for details, reference can be made in embodiment as shown in Figure 2 are not retouched in the present embodiment
State.
Embodiment 8
A kind of non-transient computer storage medium is present embodiments provided, the computer-readable storage medium is stored with computer
Executable instruction, the computer executable instructions can perform the signal transmission method described in embodiment 1.Wherein, the storage
Medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM), random access memory (Random
Access Memory, RAM), flash memory (Flash Memory), hard disk (Hard Disk Drive, abbreviation：HDD) or
Solid state hard disc (Solid-State Drive, SSD) etc.；The storage medium can also include the group of the memory of mentioned kind
Close.
It is to lead to it will be understood by those skilled in the art that realizing all or part of flow in above-described embodiment method
Computer program is crossed to instruct relevant hardware to complete, the program can be stored in a kind of computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (ROM) or random access memory (RAM) etc..
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. a kind of signal transmission method, it is characterised in that comprise the following steps：
Pass through the first PORT COM and send the demand signalling based on H.323 agreement to meeting entity；
Judge whether the demand signalling based on H.323 agreement is intercepted；
When the demand signalling based on H.323 agreement is intercepted, passes through and switch to the second PORT COM to meeting reality
Body sends the demand signalling based on preset protocol, wherein, the preset protocol differs only in TPKT with the H.323 agreement
Protocol header is different.
2. signal transmission method according to claim 1, it is characterised in that based on H.323 agreement described in the judgement
The step whether demand signalling is intercepted includes：
Judge whether the demand signalling based on H.323 agreement sends failure；
When judging result sends failure for the demand signalling based on H.323 agreement, it is determined that described based on H.323 agreement
Demand signalling be intercepted.
3. signal transmission method according to claim 2, it is characterised in that based on H.323 agreement described in the judgement
The step of whether demand signalling sends unsuccessfully includes：
Judge whether to receive the acknowledgement information for sending failure；
When receiving the acknowledgement information for sending failure, it is determined that the demand signalling based on H.323 agreement sends failure.
4. signal transmission method according to claim 1, it is characterised in that further include：
When judging result is that the demand signalling based on H.323 agreement is not intercepted, judge whether connect in preset time
Receive response signaling；
When judging result is that response signaling is not received by preset time, it is determined that response signaling is intercepted, and performs switching
To the second PORT COM to the meeting entity send demand signalling based on preset protocol the step of.
5. signal transmission method according to claim 1, it is characterised in that the meeting entity is conference terminal or meeting
Platform is discussed, wherein, it is described to pass through the step of the first PORT COM sends demand signalling based on H.323 agreement to meeting entity and wrap
Include：
Initiating the H.225 calling based on H.323 agreement to conference terminal or meeting platform by first PORT COM please
Seek signaling；
The H.245 request based on H.323 agreement is initiated by first PORT COM to conference terminal or meeting platform to believe
Order.
6. signal transmission method according to claim 1, it is characterised in that the meeting entity is conference terminal, wherein,
It is described pass through the step of the first PORT COM sends demand signalling based on H.323 agreement to meeting entity before, further include
Following steps：
Inquiry request is sent to meeting platform, the inquiry request is used for the address for inquiring about the conference terminal；
Receive the address for the conference terminal that the meeting platform returns and for representing that it is described pre- that the conference terminal is supported
If the mark of agreement.
A kind of 7. conference terminal, it is characterised in that including：
Sending module, the demand signalling based on H.323 agreement is sent for passing through the first PORT COM to meeting entity；
Judgment module, for judging whether the demand signalling based on H.323 agreement is intercepted；
Wherein, the sending module is additionally operable to when the demand signalling based on H.323 agreement is intercepted, by switching to the
Two PORT COMs to the meeting entity send the demand signalling based on preset protocol, wherein, the preset protocol with it is described
H.323 agreement differ only in TPKT protocol headers difference.
8. conference terminal according to claim 7, it is characterised in that the judgment module includes：
First judging unit, for judging whether the demand signalling based on H.323 agreement sends failure；
First determination unit, for when judging result sends failure for the demand signalling based on H.323 agreement, determining institute
The demand signalling based on H.323 agreement is stated to be intercepted.
9. conference terminal according to claim 8, it is characterised in that first judging unit includes：
Judgment sub-unit, for judging the acknowledgement information for sending failure whether is received in preset time；
Determination subelement, it is described based on H.323 for when receiving the acknowledgement information for sending failure in preset time, determining
The demand signalling of agreement sends failure.
10. conference terminal according to claim 7, it is characterised in that further include：
Second judging unit, for when the demand signalling based on H.323 agreement is not intercepted, judging in preset time
Whether response signaling is received；
Second determination unit, for when judging result is to be not received by response signaling in preset time, determining response letter
Order is intercepted；
The sending module is additionally operable to when response signaling is intercepted, and is passed through and is switched to the second PORT COM to the meeting entity
The demand signalling based on preset protocol is sent, wherein, the preset protocol differs only in TPKT associations with the H.323 agreement
It is different to discuss head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077722.7A CN107959671B (en) | 2017-11-06 | 2017-11-06 | Signaling transmission method and conference terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077722.7A CN107959671B (en) | 2017-11-06 | 2017-11-06 | Signaling transmission method and conference terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107959671A true CN107959671A (en) | 2018-04-24 |
| CN107959671B CN107959671B (en) | 2021-03-09 |
Family
ID=61964174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711077722.7A Active CN107959671B (en) | 2017-11-06 | 2017-11-06 | Signaling transmission method and conference terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107959671B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005057882A1 (en) * | 2003-12-11 | 2005-06-23 | Tandberg Telecom As | Communication systems for traversing firewalls and network address translation (nat) installations |
| CN1780288A (en) * | 2004-11-26 | 2006-05-31 | 上海博达数据通信有限公司 | Method for penetrating NAT router or proxy server communication by H323 protocol |
| US20150016422A1 (en) * | 2001-04-25 | 2015-01-15 | At&T Intellectual Property Ii, L.P. | Common mobility management protocol for multimedia applications, systems and services |
| CN105120204A (en) * | 2015-08-06 | 2015-12-02 | 苏州科达科技股份有限公司 | Multi-protocol compatible method of sharing double stream audios in conference, apparatus and system |
| CN107241565A (en) * | 2017-05-02 | 2017-10-10 | 苏州科达科技股份有限公司 | Multimedia conference system and its means of communication |
-
2017
- 2017-11-06 CN CN201711077722.7A patent/CN107959671B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150016422A1 (en) * | 2001-04-25 | 2015-01-15 | At&T Intellectual Property Ii, L.P. | Common mobility management protocol for multimedia applications, systems and services |
| WO2005057882A1 (en) * | 2003-12-11 | 2005-06-23 | Tandberg Telecom As | Communication systems for traversing firewalls and network address translation (nat) installations |
| CN1780288A (en) * | 2004-11-26 | 2006-05-31 | 上海博达数据通信有限公司 | Method for penetrating NAT router or proxy server communication by H323 protocol |
| CN105120204A (en) * | 2015-08-06 | 2015-12-02 | 苏州科达科技股份有限公司 | Multi-protocol compatible method of sharing double stream audios in conference, apparatus and system |
| CN107241565A (en) * | 2017-05-02 | 2017-10-10 | 苏州科达科技股份有限公司 | Multimedia conference system and its means of communication |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107959671B (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101984713B (en) | Method, terminal and system for realizing business data shunting | |
| US7027577B2 (en) | Method and system for multi-party call conferencing | |
| US8838771B2 (en) | Enabling VoIP calls to be initiated when a call server is unavailable | |
| US20180317274A1 (en) | Uninterrupted Transmission of Internet Protocol Transmissions During Endpoint Changes | |
| EP1081920A2 (en) | Method of establishing communication exchange between a terminal of a packet-based network and a terminal connected to a remote access server | |
| WO2008021315B1 (en) | Methods, systems, and computer program products for associating independent legs of a call in a telecommunications network | |
| CN106101297B (en) | A kind of message answer method and device | |
| US20100023629A1 (en) | Method for setting up a peer-to-peer link between two communication media | |
| US8082580B1 (en) | Session layer pinhole management within a network security device | |
| EP1252742A1 (en) | Method and controller for routing calls within private networks distributed among geographically distant zones | |
| CN107959671A (en) | Signal transmission method and conference terminal | |
| CN107172378B (en) | Multimedia conference system, gatekeeper's server and method for configuring route | |
| US8812694B2 (en) | Dialog establishment over a peer-to-peer architecture | |
| CN106161249A (en) | The processing method and processing device of PPPoE message | |
| EP1185069A2 (en) | Method and system for providing anonymity in an IP telephony network | |
| CN111131315B (en) | Session connection method, device and medium | |
| Cisco | Gatekeeper API Functions and Structures (GK API Guide Version 4.1) | |
| TWI508495B (en) | Method of exchanging distributed network messages | |
| US10084923B2 (en) | Method and system for dynamic trunk group based call routing | |
| US20060250976A1 (en) | Method and apparatus for media device correspondence | |
| CN101483541B (en) | Dynamic configuration method for SCTP signaling connection and apparatus thereof | |
| US7460518B1 (en) | Devices, softwares and methods for rule based determination of attributes of called device for network telephone call setup | |
| CA2799507C (en) | Dialog establishment over a peer-to-peer architecture | |
| CN110784404B (en) | Method and device for adjusting multi-network-port equipment application program package sending strategy | |
| JP6689150B2 (en) | Gateway device and transfer method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |