CN108270938A - The method and switch of a kind of call treatment - Google Patents
The method and switch of a kind of call treatment Download PDFInfo
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- CN108270938A CN108270938A CN201611263991.8A CN201611263991A CN108270938A CN 108270938 A CN108270938 A CN 108270938A CN 201611263991 A CN201611263991 A CN 201611263991A CN 108270938 A CN108270938 A CN 108270938A
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- address
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
Abstract
The invention relates to a kind of methods of call treatment, in the method, when receiving the call request of calling terminal transmission and receiving the response message of callee side return, record SDP information therein, detect whether to receive the multi-media cues sound of opposite end according to the SDP information as scheduled, apply for that local media resource for caller terminal plays, avoids the defects of calling terminal occurred in the prior art both can't hear opposite end media cue sound or can't hear local media prompt tone if not receiving.Improve the experience of user.
Description
Technical field
The present embodiments relate to the communication technology, the method and switch of especially a kind of call treatment.
Background technology
In IP telephony network system (English：IP Telephony) in, Plan Old business (English：Plain Old
Telephone Service, abbreviation：POTS) usually by IP user's grade interchanger (English：IP Private Branch
Exchange, abridge IP-PBX) Session initiation Protocol (English：Session Initiation Protocol, abbreviation：SIP)
Relaying is linked into IP multimedia subsystem (English：IP Multimedia Subsystem, abridge IMS) in network.Such as Fig. 1 institutes
Show, when POTS machines are as calling terminal outbound call, IP-PBX sends INVITE message to IMS, called subscriber's ring.In quilt
Before being user's off-hook, SIP defines 18X message to respond the INVITE message of Calling Side transmission, and is played to calling subscribe
CRBT or ring-back tone.Since the voice medium stream process of 18X message is before off-hook call media 200OK, so crying early
Phase media handling.Wherein, generally there are two types of modes for IMS transmission 18X message：
1) the 18X message that, IMS is sent does not carry Session Description Protocol (English：Session Description
Protocol, English：SDP) information puts back to ringing tone by the local playback resource of IP-PBX applications to phone；
2) the 18X message that, IMS is sent carries SDP, and phone listens distal end prompt tone, prompt tone is put to phone by IMS.
When 18X message is replied in IMS sides carries SDP, IP-PBX opening networks port receives opposite end prompt tone Media Stream.But
It is that caller POTS user both can't hear distal end prompting CRBT sometimes, also can't hear the ring-back tone that PBX is locally played.Caller
Phone in mute state, causes calling subscribe that can not know whether phone is got through for a long time.
Invention content
In view of this, the embodiment of the present application provides a kind of call processing method and switch, can be to avoid existing skill
The calling subscribe occurred in art can not know the problem of whether phone is got through.
The embodiment of the present application provides a kind of method of calling, and this method is performed by IP-PBX.This method specifically includes：IP-
PBX receives the call request that calling terminal is sent, and is distributed for this calling and records local terminal for receiving the IP address of Media Stream
And port numbers；INVITE message is sent to the IP multimedia subsystem IMS where called terminal, which includes institute
State IP address and port numbers that local terminal receives Media Stream；The 18x message that the IMS is returned is received, records and is wrapped in the 18x message
The IMS sides included play the IP address and port numbers of Media Stream；Determine that within the predetermined time, the local terminal receives the IP of Media Stream
The IMS sides are not received by address and port numbers and play the multimedia message that the IP address of Media Stream and port numbers are sent,
Apply for local digital signal process resource, local ring-back tone is played for the calling terminal.
It is understood that local terminal here refers to IP-PBX, calling terminal is the terminal using POTS business, is called eventually
End is then IMS terminal, and the IMS where called terminal then refers to provide the IMS of service for called terminal.Multimedia report therein
Stationery body can be real-time transport protocol (English：Real-Time Transport Protocol, abbreviation：RTP) message.According to
Actual demand can set different scheduled durations, for example be set as 500ms.
In a possible design, above-mentioned method still further comprises：It determines within the predetermined time, the local terminal
Receive received in the IP address and port numbers of Media Stream the IMS sides play the IP address of Media Stream and port numbers send it is more
The multimedia message received is converted into analog signal and is sent to the calling terminal by media message.
Optionally, in above-mentioned method, 18x message is 180 message or 183 message.
Another aspect of the present invention, the embodiment of the present application provide a kind of switch, the switch include processor,
External exchange station, digital signal processor and network interface, wherein, the FXS, for receiving call request from calling terminal, and will
The call request is sent to DSP；The digital signal processor, for the call request received to be transmitted to processor,
And provide Digital Signal Processing resource；The processor, the local terminal for being received as calling distribution is with receiving the IP of Media Stream
Location and port numbers record IP address and port numbers that the local terminal receives Media Stream, and send INVITE message to IMS, in institute
It states and IP address and port numbers that the local terminal receives Media Stream is carried in INVITE message；For receiving what IMS was returned from network interface
18x message records IP address and port numbers that the IMS sides that the 18x message includes play Media Stream；And it is additionally operable to determine
Within the predetermined time, the local terminal is received to be not received by the IP address and port numbers of Media Stream from the IMS sides and be played
The multimedia message that the IP address and port numbers of Media Stream are sent, to the digital signal processor application Digital Signal Processing
Resource is caller terminal plays local ring-back tone according to the Digital Signal Processing resource applied.
In a kind of possible design, the processor is additionally operable to determine that the local terminal receives matchmaker within the predetermined time
The multimedia for playing the IP address of Media Stream and port numbers from the IMS sides and sending is received in the IP address and port numbers of body stream
The multimedia message received is converted into analog signal and is sent to the calling terminal by message.
Above-mentioned " local terminal " referred to refers to switch end, and 18x message is 180 message or 183 message.In practical application
In, switch can be IP-PBX, and calling terminal is the terminal using POTS business, and called terminal is then IMS terminal, and by
IMS where being terminal then refers to provide the IMS of service for called terminal.Multimedia message therein can be passed in real time
Defeated agreement (English：Real-Time Transport Protocol, abbreviation：RTP) message.According to actual demand, can set
Different scheduled durations, for example it is set as 500ms.
In the prior art, when carrying SDP in 18x message, IP-PBX can utilize network interface to receive the multimedia that IMS sides are sent
Message, at this time if IP-PBX is not able to receive the multimedia message of IMS sides transmission as scheduled, then calling subscribe side is always
In mute state, whether the session that has no way of finding out about it has turned on.And in the embodiment that the application provides, if IP-PBX is predetermined
Time in do not detect the Media Stream sent out from IMS sides, can apply for local digital signal process resource, be broadcast for calling terminal
Put local ring-back tone.It is mute always so as to avoid Calling Side so that calling subscribe can not know the problem of whether session connect.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.
Fig. 1 is a kind of networking schematic diagram of communication system；
Fig. 2 is a kind of flow diagram of call processing method；
Fig. 3 is a kind of structure diagram of switch.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, technical solution provided in an embodiment of the present invention is described.
As shown in Figure 1, a kind of communication network provided in an embodiment of the present invention, the network include：IP-PBX, IMS, wherein,
IMS includes Session Border Controller (Session Border Controller, SBC), IMScore.Wherein, IP-PBX is used for
Complete the telephone exchange between user terminal and IMS.In an embodiment of the present invention, PBX is linked into the IMS of IMS by SBC
core；Wherein, IMS core provide the speech based on IP technologies, data and multimedia service and new application.
An embodiment of the present invention provides a kind of call processing method, applied in above-mentioned communication system shown in FIG. 1, by making
With the calling terminal of analog phone business for the called terminal of IMS initiates calling.With reference to figure 2, this method specifically includes：
Step 201, when using the terminal of analog phone business as the dialing of calling terminal off-hook, to the transmission calling of IMS sides
Request, the call request are connected to IP-PBX.
Step 202, IP-PBX is the IP address and port numbers that this calling distribution local terminal is used to receive Media Stream, and to
IMS sends INVITE, which is sent to IMS core by SBC.Wherein, which is included for matchmaker
The SDP information that body is negotiated, the SDP information include the IP-PBX for receiving IP address and the port of Media Stream.
Step 203, IMS core confirm whether the called subscriber has contracted CRBT industry according to the signing information of called subscriber
Business.
By taking called subscriber has contracted Ring Back Tone service as an example, in this case, IMS core are in addition to INVITE message is forwarded
To called terminal, multimedia negotiation is carried out also according to the INVITE message received, to determine to play the resource of multimedia color ring back tone.
Wherein, IMS core can include the equipment such as CSCF, MRBT AS, MRS, after IMS core receive INVITE message, specifically
Multimedia negotiation process refers to the prior art, and details are not described herein.
Step 204, after dialed terminal bell, 18x message is returned to IMS core.
Step 205, IMS core send 18x message to SBC.
Whether the 18x message returned to SBC, contract Ring Back Tone service according to called subscriber, and different from.If step 203
In determine that called subscriber has contracted Ring Back Tone service, then carried in the message returned to IP-PBX as caller coloring ring back tone playing
SDP information, the SDP information include the IP address and port numbers of the media resource of IMS sides coloring ring back tone playing.
Step 206, after SBC receives 18x message, the IMS sides included in SDP is played into IP address and port numbers are replaced
For the IP address and port numbers of SBC, and modified 18x message is sent to IP-PBX.
Step 207, after IP-PBX receives 18x message, the IP address and port information of SBC included in SDP is recorded, and
Start RTP packet checks, in the given time, local terminal receives the IP address of Media Stream and whether port numbers are broadcast from IMS sides for detection
It puts and RTP messages is received in the IP address and port numbers of Media Stream.It is understood that for IP-PBX, IMS sides play
The IP address and port numbers of Media Stream refer to the IP address and port numbers of the SBC included in the 18x message received.
Step 208, if within the predetermined time, IP-PBX does not detect IP address and the end of above-mentioned reception Media Stream
Slogan receives the RTP messages that the IP address for playing Media Stream and port numbers are sent, then the local number letter of IP-PBX applications
Number processing (English：Digital Signal Processing, abbreviation：DSP) resource is caller terminal plays local ring-back tone.
If within the predetermined time, IP-PBX detects that the IP address of above-mentioned reception Media Stream and port numbers have received
Play the RTP messages that the IP address of Media Stream and port numbers are sent, then IP-PBX is by the media stream transition received into simulation
Signal is sent to calling terminal.In this way, calling terminal can hear the multimedia color ring back tone that IMS sides provide.
Step 209, off-hook is called, 200OK message is sent to IP-PBX.
Step 210, IP-PBX is to called terminal returning response ACK message.
So far, session establishment can be conversed between calling and called.
Alternatively, in above-described embodiment, if determining that called subscriber does not contract Ring Back Tone service in step 203, then
SDP information is not carried in the 18x message returned to IP-PBX.In this case, SBC receives the 18x of IP-PBX transmissions
During message, the 18x message received can be transmitted to IP-PBX.SDP letters are not carried in the 18x message that IP-PBX discoveries receive
Breath, therefore, IP-PBX can apply for the DSP resources being locally stored, to calling terminal playing RBT.Detailed process and the prior art
It is no different, details are not described herein.
It is understood that using the message in Session Initiation Protocol when IP-PBX is interacted with IMS in previous step, and its
Middle 18x message can be 180 message or 183 message.
As shown in figure 3, the embodiment of the present invention also provides a kind of switch, including processor 301, external exchange station 302
(English：Foreign Exchange Station, abbreviation：FXS), (English of digital signal processor 303：Digital
Signal Processor, abbreviation：DSP), network interface 304, processor 301 lead between digital signal processor 303 and network interface 304
It crosses internal bus to be connected, can also be connected between FXS302 and digital signal processor by internal bus.Wherein, FXS is used for
Call request is received, and the call request is sent to DSP from calling terminal；Digital signal processor DSP, for that will receive
To call request be transmitted to processor and provide Digital Signal Processing resource；Processor, for being received as calling distribution
Local terminal receives the IP address and port numbers of Media Stream, records IP address and port numbers that the local terminal receives Media Stream, and to IMS
INVITE message is sent, IP address and port numbers that the local terminal receives Media Stream are carried in the INVITE message；For
The 18x message of IMS returns is received from network interface, determines and records that the 18x message includes the IP address that IMS sides play Media Stream
And port numbers；And processor is additionally operable to determine that the local terminal receives the IP address and port numbers of Media Stream within the predetermined time
On whether have receive from the IMS sides play Media Stream IP address and port numbers send multimedia message；Do not have when determining
When receiving, to the digital signal processor application Digital Signal Processing resource, believed according to the number applied
Number process resource is caller terminal plays local ring-back tone, and when determining to receive, the multimedia message that will be received
It is converted into analog signal and is sent to calling terminal.
In concrete implementation, above-mentioned switch can be IP user grade interchanger IP-PBX, and network interface therein
It can be Ethernet interface.It is understood that IP-PBX can receive the signaling of IMS transmissions by the different port of the network interface
Or Media Stream.
Those skilled in the art it will be appreciated that in said one or multiple examples, retouched by the embodiment of the present invention
The function of stating can be realized wholly or partly by software, hardware, firmware or its arbitrary combination.When using software real
Now, it can entirely or partly realize in the form of a computer program product.The computer program product include one or
Multiple computer instructions.When loading on computers and performing the computer program instructions, entirely or partly generate according to
Flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, special purpose computer, computer network
Network or other programmable devices.The computer instruction can store in a computer-readable storage medium or pass through institute
Computer readable storage medium is stated to be transmitted.The computer instruction can from a web-site, computer, server or
Data center passes through wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave
Deng) mode is transmitted to another web-site, computer, server or data center.The computer-readable storage medium
Matter can be any usable medium that can access of computer either integrate comprising one or more usable mediums server,
The data storage devices such as data center.The usable medium can be magnetic medium, and (for example, floppy disk, hard disk, tape), light are situated between
Matter (for example, DVD) or semiconductor medium (such as solid state disk Solid State Disk (SSD)) etc..
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic；
And these modifications or replacement, the protection model for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (5)
1. a kind of call processing method, which is characterized in that the method includes：
The call request that calling terminal is sent is received, distributed for this calling and records local terminal for receiving the IP address of Media Stream
And port numbers；
INVITE message is sent to the IP multimedia subsystem IMS where called terminal, the INVITE message includes described
Local terminal receives the IP address and port numbers of Media Stream；
Receive the 18x message that the IMS is returned, record the IMS sides that the 18x message includes play Media Stream IP address and
Port numbers；
It determines within the predetermined time, being not received by the IMS sides in the IP address and port numbers for receiving Media Stream broadcasts
The multimedia message that the IP address of Media Stream and port numbers are sent is put, applies for local digital signal process resource, is the caller
Terminal plays local ring-back tone.
2. the method as described in power 1, which is characterized in that the method further comprises：
It determines within the predetermined time, receiving the IMS sides in the IP address and port numbers of the local terminal reception Media Stream broadcasts
The multimedia message that the IP address of Media Stream and port numbers are sent is put, the multimedia message received is converted into simulation letter
Number it is sent to the calling terminal.
3. the method as described in claim 1, which is characterized in that the 18x message disappears for 180
Breath or 183 message.
4. a kind of switch, which includes processor, external exchange station, digital signal processor and network interface, wherein,
The call request for receiving call request from calling terminal, and is sent to DSP by the FXS；
The digital signal processor, for the call request received to be transmitted to processor and provides Digital Signal Processing
Resource；
The processor, the local terminal for being received as calling distribution receives the IP address and port numbers of Media Stream, described in record
Local terminal receives the IP address and port numbers of Media Stream, and sends INVITE message to IMS, and institute is carried in the INVITE message
State IP address and port numbers that local terminal receives Media Stream；For receiving the 18x message of IMS returns from network interface, record the 18x and disappear
Breath includes the IP address and port numbers that IMS sides play Media Stream；And it is additionally operable to determine within the predetermined time, the local terminal
It receives to be not received by the IP address and port numbers of Media Stream from the IMS sides and plays the IP address of Media Stream and port numbers hair
The multimedia message sent to the digital signal processor application Digital Signal Processing resource, is believed according to the number applied
Number process resource is caller terminal plays local ring-back tone.
5. the device as described in power 4, which is characterized in that
The processor is additionally operable to determine that the local terminal is received in the IP address and port numbers of Media Stream within the predetermined time
Receive from the IMS sides play Media Stream IP address and port numbers send multimedia message, by it is described receive it is more
Media message is converted into analog signal and is sent to calling terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263991.8A CN108270938B (en) | 2016-12-30 | 2016-12-30 | Call processing method and switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263991.8A CN108270938B (en) | 2016-12-30 | 2016-12-30 | Call processing method and switching device |
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| Publication Number | Publication Date |
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| CN108270938A true CN108270938A (en) | 2018-07-10 |
| CN108270938B CN108270938B (en) | 2020-07-28 |
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| CN201611263991.8A Active CN108270938B (en) | 2016-12-30 | 2016-12-30 | Call processing method and switching device |
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| CN111182163A (en) * | 2019-11-25 | 2020-05-19 | 深圳震有科技股份有限公司 | Automatic call test method and device, computer equipment and medium |
| CN111212192A (en) * | 2018-11-21 | 2020-05-29 | 中国电信股份有限公司 | Method and device for playing voice when IMS fixed-line user dials VOLTE user |
| CN112188005A (en) * | 2019-07-03 | 2021-01-05 | 中国电信股份有限公司 | Ring back tone playing method and system and internetwork interconnection access control equipment |
| CN112910892A (en) * | 2021-01-29 | 2021-06-04 | Oppo广东移动通信有限公司 | Method and terminal for playing call hold audio/video signal |
| CN114095887A (en) * | 2022-01-20 | 2022-02-25 | 荣耀终端有限公司 | Call abnormity prompting method, communication system, electronic equipment and medium |
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