CN106454785A - Call forwarding method and system - Google Patents
Call forwarding method and system Download PDFInfo
- Publication number
- CN106454785A CN106454785A CN201611153192.5A CN201611153192A CN106454785A CN 106454785 A CN106454785 A CN 106454785A CN 201611153192 A CN201611153192 A CN 201611153192A CN 106454785 A CN106454785 A CN 106454785A
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- terminal
- call
- call forwarding
- network element
- mark
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
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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
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- 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
- H04L65/1096—Supplementary features, e.g. call forwarding or call holding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
Abstract
The invention discloses a call forwarding method and system and relates to the technical field of communication. The call forwarding method and system can solve the problem a current call forwarding method only based on a line status of a called terminal and the identity of a calling terminal cannot meet business development. The call forwarding method comprises the steps: an S-CSCF network element receives a calling request; the S-CSCF network element obtains business configuration information of a first terminal according to the identification of the first terminal, wherein the business configuration information comprises a call forwarding business trigger condition and the identification of a second terminal; the S-CSCF network element transmits the calling request to a call forwarding AS when the call forwarding business trigger condition is met; the call forwarding AS can judge whether the distance between the first terminal and the second terminal is smaller than a preset threshold value; the call forwarding AS transmits the calling request to the second terminal through the S-CSCF network element when the distance between the first terminal and the second terminal is smaller than the preset threshold value. The call forwarding method provided by the invention is suitable for a call forwarding process in an IMS network.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method and system of call forwarding.
Background technology
With global operator IMS (IP Multimedia Subsystem, IP Multimedia System) network and it is based on
LTE (Long Term Evolution, Long Term Evolution) the high definition voice of IMS, video solution VoLTE (Voice over
LTE, LTE converse) planning of business deployment, the various end products for supporting IMS network also arise at the historic moment and constantly develop, example
Such as：The intelligent mobile phone terminal of various support IMS, IPTV (Internet Protocol Television, Internet protocol TV)
Set Top Box, videophone, intelligent robot etc..Due to not receiving volume, integrated level, ambulant restriction, fixed terminal is (as IPTV
Set Top Box, videophone) smooth audio/video communication experience more apparent than mobile terminal can be provided.
At present, in IMS business, call transfer service is mainly based upon the line status of terminal called and calling terminal body
Part being judged and be triggered service, mainly include unconditional call forwarding, no-reply call transfer, busy call forwarding,
Unreachable call forwarding etc..
However, when terminal called can simultaneously using mobile terminal and fixed terminal when, if the mobile end of caller dials
End, and the terminal called is want to answer call transfer to fixed terminal, to have the experience of more preferable audio frequency and video, then according to
Prior art, has two methods to solve, and one is that terminal called hangs up Current telephony, reuses fixed terminal and initiates to caller end
The calling at end, but can so cause the waste of the communication resource, and terminal called there is also to be inconvenient to hang up Current telephony and weighs again
Situation about newly dialing；Two is to arrange no-reply call transfer to mobile terminal, by do not answer the phone of mobile terminal and by electricity
Words are transferred to fixed terminal, but do not receive calls for a long time and be likely to cause calling terminal to hang up the telephone in advance, it follows that
The call transfer mode of the line status and calling terminal identity that are based only upon terminal called can not meet the development of business.
Content of the invention
The embodiment of the present invention provides a kind of method and system of call forwarding, can solve the problem that at present and is based only upon terminal called
The call transfer mode of line status and calling terminal identity can not meet the development problem of business.
For reaching above-mentioned purpose, the embodiment of the present invention is adopted the following technical scheme that：
In a first aspect, the embodiment of the present invention provides a kind of method of call forwarding, call set-up systems are applied to, described exhale
The system of foundation is made to include service call conversation control function S-CSCF network element and call forwarding application server AS, methods described bag
Include：
The S-CSCF network element receives call request, and the call request carries the mark of first terminal, and described first eventually
Hold as the corresponding terminal called of the call request；
The S-CSCF network element obtains the service configuration information of first terminal, the industry according to the mark of the first terminal
Business configuration information includes the mark of call transfer service trigger condition and second terminal, and the second terminal is the first terminal
The call request is carried out the purpose terminal after call forwarding；
When the call transfer service trigger condition is met, the S-CSCF network element forwards the call request to described
Call forwarding AS；
Call forwarding AS judges whether the first terminal and the distance of the second terminal are less than predetermined threshold value；
When the distance of the first terminal and the second terminal is less than the predetermined threshold value, the call forwarding AS root
According to the mark of the second terminal, the call request is forwarded to the second terminal by the S-CSCF network element.
Second aspect, the embodiment of the present invention provides a kind of system of call forwarding, including：
S-CSCF network element, for receiving call request, the call request carries the mark of first terminal, and described first eventually
Hold as the corresponding terminal called of the call request；
The S-CSCF network element, is additionally operable to obtain the business configuration letter of first terminal according to the mark of the first terminal
Breath, the service configuration information includes the mark of call transfer service trigger condition and second terminal, and the second terminal is institute
The call request is carried out the purpose terminal after call forwarding to state first terminal；
The S-CSCF network element, is additionally operable to, when the call transfer service trigger condition is met, forward the calling to ask
Ask to call forwarding AS；
Whether call forwarding AS, for judging the distance of the first terminal and the second terminal less than default threshold
Value；
Call forwarding AS, is additionally operable to when the distance of the first terminal and the second terminal is less than the default threshold
During value, the call request is forwarded to described second eventually by the S-CSCF network element by the mark according to the second terminal
End.
The embodiment of the present invention provides a kind of method and system of call forwarding, by call forwarding AS judge first terminal with
Whether the distance of second terminal is less than predetermined threshold value, and wherein, first terminal is the terminal called of call request, and second terminal is the
The call request is carried out one terminal the purpose terminal after call forwarding.When the distance of first terminal and second terminal is less than default
During threshold value, call request is forwarded to second terminal by S-CSCF network element by call forwarding AS.Can only be based on prior art
The line status of terminal called is judged and is triggered call transfer service to compare with calling terminal identity, as the present invention is
Call transfer service is triggered by judging the distance between purpose terminal of terminal called and call forwarding less than predetermined threshold value,
So, when user can use the other-end nearer apart from terminal called, when such as audio frequency and video experience more preferable terminal, Ke Yishi
Now the calling of terminal called is transferred to audio frequency and video to experience in more preferable terminal, it is possible to increase Consumer's Experience.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below by to be used needed for embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is a kind of Organization Chart of call set-up systems provided in an embodiment of the present invention；
Fig. 2 is a kind of method flow diagram of call forwarding provided in an embodiment of the present invention；
Fig. 3 is the method flow diagram of another kind call forwarding provided in an embodiment of the present invention；
Fig. 4 is a kind of session initiation protocol SIP signaling process figure of call forwarding provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of call forwarding system provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Call transferring method provided in an embodiment of the present invention can apply to a kind of call set-up systems of IMS network, such as
Shown in Fig. 1, the system includes P-CSCF (Proxy Call Session Control Function, agent call session control
Function) network element 11, I-CSCF (Interrogating Call Session Control Function, query call session control
Function processed) network element 12, S-CSCF (Serving Call Session Control Function, service call session control work(
Can) network element 13, HSS (The Home Subscribe Server, home signature user server) 14 and call forwarding AS
(Application Server, application server) 15.
Technical scheme in for a better understanding of the present invention, enters to main functional module in the call set-up systems below
The brief introduction of row, as follows：
P-CSCF network element 11, all originate from IMS terminal and terminate at the conversation message of IMS terminal will pass through P-CSCF
Network element 11.P-CSCF network element 11 is responsible for the terminal authentication related to access network and procotol security management, and network is anti-to attack
Hit and safeguard protection, be to save wireless network resource SIP signalling compression and decompression is carried out, the Roaming control of terminal, by PDF
(Policy Decision Function, strategy decisive function) carries out NAT (the Network Address of loading end
Translation, network address translation) with the functions such as QoS (Quality of Service, service quality).
I-CSCF network element 12, is the entrance of IMS home network.During endpoint registration to network,
I-CSCF network element 12, by inquiring about HSS14, is that terminal selects a S-CSCF network element 13.In calling procedure, go
Calling toward IMS network is first routed to I-CSCF network element 12, obtains, from HSS14, the S- registered by terminal by I-CSCF network element 12
13 address of CSCF network element, then S-CSCF network element 13 is routed messages to by I-CSCF network element 12.
S-CSCF network element 13, the driver's seat in IMS core net in core, register and authentication and the meeting being responsible for terminal
Words control, executes the basic session routing function for caller and callee side IMS terminal, and is triggered according to the IMS of terminal unit contractual
Rule, proceeds to the triggering of value-added service route and the Service control interaction of application server when condition meets.
HSS14, preserves the CAMEL-Subscription-Information of IMS terminal, including basic identification, routing iinformation and service profile.
Call forwarding AS15, passes through standard SIP (Session between call forwarding AS15 and S-CSCF network element 13
Initiation Protocol, session initiation protocol) signaling interacts, and then realize each call transfer service triggering and
Execute.It should be noted that call forwarding AS15 can be independent a set of equipment, it is also possible to existing MMTEL
(Multimedia Telephony, mediaphone) AS close set, that is, share a set of physical equipment, but with existing MMTEL AS
Compare, a position discrimination module is increased, the position discrimination module is used for according to the call forwarding for arranging in call forwarding AS
Acquisition of information first terminal and second terminal positional information, and the distance to first terminal and second terminal and preset value
It is compared.
In order to solve to be based only upon at present the line status of terminal called and calling terminal identity call transfer mode not
The problem of the development of business can be met, the embodiment of the present invention provides a kind of method of call forwarding, is applied to the call setup of Fig. 1
System, as shown in Fig. 2 the method includes：
101st, the S-CSCF network element receives call request.
Wherein, the call request carries the mark of first terminal, and the first terminal is that the call request is corresponding
Terminal called.
Used as a kind of specific embodiment, calling terminal initiates call request, and the network being located by calling terminal will be called please
Ask and be converted to INVITE and the IMS network that first terminal (i.e. terminal called) is located is forwarded to, by IMS that first terminal is located
S-CSCF network element in network is received.Wherein, the value of the Request URI parameter in INVITE is the mark of first terminal
Know.Wherein first terminal can be mobile terminal, or fixed terminal, and here is not limited.
102nd, the S-CSCF network element obtains the service configuration information of first terminal according to the mark of the first terminal.
Wherein, the service configuration information includes the mark of call transfer service trigger condition and second terminal, described
Two terminals are that the call request is carried out the first terminal purpose terminal after call forwarding.
As a kind of specific embodiment, S-CSCF network element after INVITE is received, according to the mark of first terminal
The CAMEL-Subscription-Information of first terminal is searched from HSS, and in CAMEL-Subscription-Information, the service configuration information comprising first terminal, works as business configuration
In information during the information comprising call transfer service, the purpose terminal that first terminal calling is transferred to is obtained from the CAMEL-Subscription-Information
The mark of (i.e. second terminal), the corresponding terminal of the mark of the second terminal is second terminal.
103rd, when the call transfer service trigger condition is met, the S-CSCF network element forwards the call request extremely
Call forwarding AS.
As a kind of specific embodiment, when the information comprising call transfer service in service configuration information, and satisfaction is exhaled
Cry transfer service trigger condition when, INVITE is forwarded to first terminal according to the mark of first terminal by S-CSCF network element
Corresponding call forwarding AS.
104th, call forwarding AS judges whether the first terminal and the distance of the second terminal are less than default threshold
Value.
As a kind of specific embodiment, in existing call forwarding AS, increase a position discrimination module, the position is sentenced
Other module periodically can be sent to first terminal and second terminal according to the information of the call forwarding for arranging in call forwarding AS
Sip message, obtains the real-time geographical locations of first terminal and second terminal further and stores.
When S-CSCF network element forwarded call is asked to call forwarding AS, position discrimination module obtains first terminal and second
The current location information of terminal, and judge whether first terminal and the distance of second terminal are less than in advance according to current positional information
If threshold value.
As the application scenarios of the present invention are that those who answer hears second terminal jingle bell, start from the position of first terminal to the
The position movement of two terminals, and need to receive calls before second terminal jingle bell terminates, so the setting of predetermined threshold value can
, according to those who answer in the case of guaranteeing to hear phone, to move to the position of second terminal from the position of first terminal
Maximum distance is arranging.
It should be noted that call forwarding include unconditional call forwarding, busy call forwarding, no-reply call transfer and
Unreachable call forwarding.
Specifically, unconditional call forwarding, refers to when contracting terminal has new calling to reach, no matter contracting terminal is current
In what state, no matter also whether it starts shooting, network all transfers the call to other ends that contracting terminal pre-sets automatically
On end.
Busy call forwarding, transfer of also crying that the line is busy, during referring to if the terminal of the business of contracting is conversed, have
One new calling is reached, and now network judges that contracting terminal, in busy state, newly will be exhaled subsequently reached automatically
Cry and be transferred on the other-end that contracting terminal pre-sets.
No-reply call is shifted, and is referred to if contracting terminal ring unanswered within the ring certain time, network can automatically by
Calling is transferred on the other-end for pre-setting.
Unreachable call forwarding, unreachable refers to that network does not know the current location information of terminal, such as terminal closedown, end
End reach a network coverage blind area (not in effective service area, signal difference), now when contracting terminal as called when, net
Network cannot paging to the contracting terminal, now network can be on the other-end that pre-set to contracting terminal of calling.
The business of different call forwardings corresponds to different call forwardings AS, and used as a kind of specific embodiment, the present invention can
By position discrimination module on unconditional call forwarding AS, so, if first terminal is mobile terminal, second terminal is solid
When determining terminal, when mobile terminal called, direct unconditional judgement mobile terminal and fixed terminal distance, when distance is less than
During predetermined threshold value, calling is transferred directly to fixed terminal.So, as fixed terminal has the experience of more preferable audio frequency and video, so carrying
High Consumer's Experience.
When position discrimination module is arranged on no-reply call transfer AS, can pass through to arrange industry in CAMEL-Subscription-Information
The priority of the triggering rule of business, such as S-CSCF network element preferentially triggers the business of first terminal no-reply call transfer, locates afterwards
Reason first terminal is apart from second terminal position less than triggering call transfer service during predetermined threshold value.So, if first terminal is solid
When determining terminal, when second terminal is mobile terminal, when fixed terminal called, those who answer is if necessary to outgoing or shift position
When, then can be by not answering fixed terminal, calling can be transferred to mobile terminal, then be received calls by mobile terminal,
So as to realize receiving calls for movement.
Also, it should be noted position discrimination module can also be arranged in other kinds of call forwarding AS, the present invention
Embodiment is not construed as limiting, and the priority that can trigger rule according to reality to call forwarding does accommodation.
105th, when the distance of the first terminal and the second terminal is less than the predetermined threshold value, the call forwarding
The call request is forwarded to the second terminal by the S-CSCF network element according to the mark of the second terminal by AS.
As a kind of specific embodiment, when the distance of the first terminal and the second terminal is less than the predetermined threshold value
When, showing that those who answer was can guarantee that in the second terminal jingle bell stage, the position for moving to second terminal from the position of first terminal is simultaneously
Receive calls, therefore first terminal call request can be transferred to second terminal.So call forwarding AS is by INVITE
The value of Request URI parameter is revised as the mark of second terminal, and increases or change History-Info head field,
History-Info head field is used for recording the relevant information of call forwarding.Then again amended INVITE is forwarded to
S-CSCF network element, and INVITE is then sent to second terminal according to the mark of second terminal by S-CSCF network element, that is, complete
Calling is transferred to second terminal from first terminal.
The embodiment of the present invention provides a kind of method of call forwarding, judges first terminal and second eventually by call forwarding AS
Whether the distance at end is less than predetermined threshold value, and wherein, first terminal is the terminal called of call request, and second terminal is first terminal
The call request is carried out the purpose terminal after call forwarding.When the distance of first terminal and second terminal is less than predetermined threshold value
When, call request is forwarded to second terminal by S-CSCF network element by call forwarding AS.Called with being based in prior art
The line status of terminal is judged and is triggered call transfer service to compare with calling terminal identity, as the present invention is to pass through
Judge that the distance between purpose terminal of terminal called and call forwarding triggers call transfer service, institute less than predetermined threshold value
With when user can use the other-end nearer apart from terminal called, when such as audio frequency and video experience more preferable terminal, it is possible to achieve
The calling of terminal called is transferred in the more preferable terminal of audio frequency and video experience receive calls, it is possible to increase Consumer's Experience.
Further, as refinement and the extension to method shown in Fig. 2, the embodiment of the present invention additionally provides a kind of calling and turns
The method of shifting, as shown in figure 3, including：
201st, S-CSCF network element receives call request.
Wherein, the call request carries the mark of first terminal, and the first terminal is that the call request is corresponding
Terminal called.
202nd, S-CSCF network element obtains the corresponding CAMEL-Subscription-Information of first terminal according to the mark of first terminal.
Wherein, the triggering rule comprising the mark of terminal called (first terminal) and business in CAMEL-Subscription-Information, the touching of business
It is that iFC (Initial Filter Criteria, initial filter criteria) defines different business according to different priorities to send out rule
The condition of corresponding triggering and purpose application service.Generally, the highest priority of call transfer service, i.e., carried out at first
The condition detection of call transfer service and process.Additionally, including call forwarding purpose terminal (i.e. second terminal) in CAMEL-Subscription-Information
Mark.
Used as a kind of specific embodiment, this step can be refined as：202a, S-CSCF network element obtains CAMEL-Subscription-Information；202b, enter
Row iFC trigger condition is detected, when call transfer service condition is met, then execution step 203；When being unsatisfactory for call transfer service
During condition, then execution step 207b is detection and the process that S-CSCF network element carries out next iFC trigger condition.
203rd, S-CSCF network element determines second terminal according to CAMEL-Subscription-Information.
Wherein, the second terminal is that the call request is carried out the first terminal purpose end after call forwarding
End.
As a kind of specific embodiment, call forwarding purpose terminal of the S-CSCF network element according to included in CAMEL-Subscription-Information
The mark of (i.e. second terminal), determines second terminal.
204th, the forwarded call of S-CSCF network element is asked to call forwarding AS.
205th, call forwarding AS judges whether first terminal and the distance of second terminal are less than predetermined threshold value.
206th, when the distance of first terminal and second terminal is less than predetermined threshold value, call request is passed through by call forwarding AS
S-CSCF network element is forwarded to second terminal.
Wherein, step 204 is to 206 implement and refer to step 103 to 105.
207th, when the distance of first terminal and second terminal is more than or equal to predetermined threshold value, call forwarding AS is by call request
S-CSCF network element is forwarded to, and detection and the process of next business trigger condition is carried out by S-CSCF network element.
Specifically, this step can be refined as：207a, call forwarding AS are not carried out as step to the call request for receiving
206 process, is directly forwarded to S-CSCF network element；207b, carried out the detection of next business trigger condition by S-CSCF network element
And process, it should be noted that if there is no the business trigger condition of other call forwardings, S-CSCF network element in CAMEL-Subscription-Information
Call request can be sent to first terminal.
The embodiment of the present invention provides a kind of method of call forwarding, by the call forwarding based on Distance Judgment to be set to
The professional qualification of preferential triggering, when the distance of first terminal and second terminal is less than predetermined threshold value, call forwarding AS passes through S-
Call request is forwarded to second terminal by CSCF network element, and when distance is more than or equal to predetermined threshold value, call forwarding AS will be called
Request forwards S-CSCF network element, carries out the detection of next triggering professional qualification or directly by call request by S-CSCF network element
Forward and can only be judged simultaneously based on the line status of terminal called and calling terminal identity in first terminal, with prior art
Triggering call transfer service compare, due to the present invention be by judge between terminal called and the purpose terminal of call forwarding away from
Call transfer service is triggered from less than predetermined threshold value, so, the embodiment of the present invention can meet and turn the calling of terminal called
Move on to other-end close together to receive calls, so as to meet the diversified demand of business development.
In order to the embodiment of the present invention is best understood from, a kind of SIP flow chart of call forwarding is there is also provided, as Fig. 4 institute
Show, wherein first terminal and second terminal are the terminal for supporting IMS network video and speech business, and the signing in HSS
It is configured with the service trigger criteria of the call forwarding of first terminal to second terminal in information, main SIP signaling process is as follows：
1-2, calling terminal initiate INVITE calling to first terminal.
3rd, S-CSCF forwards call to the call transfer service AS at first terminal place according to signing iFC.
4th, call forwarding AS judges the distance of first terminal and second terminal, when distance is less than predetermined threshold value, will
In INVITE, the value of Request URI parameter is revised as mark and increase or the modification History-Info of second terminal
Head field etc. is processed.
5-7, call forwarding AS release the calling of 181 tone Ringing, play the warning tone being transferred to calling terminal.
8th, call forwarding AS sends amended INVITE.
9th, call forwarding AS sends INVITE by S-CSCF network element to second terminal.
10-14, S-CSCF send 180 signaling playing RBT to calling terminal.
15-19, second terminal send 200OK signaling to calling terminal, confirm that calling has been transferred to second terminal.
20-24, calling terminal send ACK signaling to second terminal, acknowledge receipt of 200OK signaling.
The embodiment of the present invention also provides a kind of system 50 of call forwarding, for executing previously described method, as Fig. 5 institute
Show, the system 50 includes：
S-CSCF network element 51, for receiving call request, the call request carries the mark of first terminal, and described first
Terminal is the corresponding terminal called of the call request.
The S-CSCF network element 51, is additionally operable to obtain the business configuration letter of first terminal according to the mark of the first terminal
Breath, the service configuration information includes the mark of call transfer service trigger condition and second terminal, and the second terminal is institute
The call request is carried out the purpose terminal after call forwarding to state first terminal.
The S-CSCF network element 51, is additionally operable to, when the call transfer service trigger condition is met, forward the calling
Ask to call forwarding AS52.
Whether call forwarding AS52, for judging the distance of the first terminal and the second terminal less than default
Threshold value.
Call forwarding AS52, is additionally operable to preset less than described when the distance of the first terminal and the second terminal
During threshold value, the call request is forwarded to described second eventually by the S-CSCF network element by the mark according to the second terminal
End.
Further, the S-CSCF network element 51, is additionally operable to obtain described first eventually according to the mark of the first terminal
The CAMEL-Subscription-Information at end, the service configuration information of the CAMEL-Subscription-Information comprising the first terminal.
The S-CSCF network element 51, is additionally operable to determine the second terminal according to the mark of the second terminal.
Call forwarding AS52, the terminal called for being additionally operable to change in the call request be designated described second eventually
The mark at end.
Call forwarding AS52, is additionally operable to, according to the mark of the second terminal, the call request is passed through the S-
CSCF network element is forwarded to the second terminal.
Call forwarding AS52, is additionally operable to when the distance of the first terminal and the second terminal is more than or equal to default
During threshold value, the call request is forwarded to described first eventually by the S-CSCF network element by the mark according to the first terminal
End.
Call forwarding AS52, is additionally operable to first terminal described in interval acquiring to schedule and the second terminal
Positional information and preserve.
The embodiment of the present invention provides a kind of system of call forwarding, judges first terminal and second eventually by call forwarding AS
Whether the distance at end is less than predetermined threshold value, and wherein, first terminal is the terminal called of call request, and second terminal is first terminal
The call request is carried out the purpose terminal after call forwarding.When the distance of first terminal and second terminal is less than predetermined threshold value
When, call request is forwarded to second terminal by S-CSCF network element by call forwarding AS.Called with being based in prior art
The line status of terminal is judged and is triggered call transfer service to compare with calling terminal identity, as the present invention is to pass through
Judge that the distance between purpose terminal of terminal called and call forwarding triggers call transfer service, institute less than predetermined threshold value
With when user can use the other-end nearer apart from terminal called, when such as audio frequency and video experience more preferable terminal, it is possible to achieve
The calling of terminal called is transferred in the more preferable terminal of audio frequency and video experience receive calls, it is possible to increase Consumer's Experience.
Each embodiment in this specification is all described by the way of going forward one by one, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.Especially for system reality
For applying example, as which is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to embodiment of the method
Part explanation.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment method, it is permissible
Instruct related hardware to complete by computer program, described program can be stored in computer read/write memory medium
In, the program is upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of method of call forwarding, it is characterised in that be applied to call set-up systems, the call set-up systems include clothes
Business CSCF S-CSCF network element and call forwarding application server AS, methods described includes：
The S-CSCF network element receives call request, and the call request carries the mark of first terminal, and the first terminal is
The corresponding terminal called of the call request；
The S-CSCF network element obtains the service configuration information of first terminal according to the mark of the first terminal, and the business is joined
Confidence breath includes the mark of call transfer service trigger condition and second terminal, and the second terminal is for the first terminal by institute
State the purpose terminal after call request carries out call forwarding；
When the call transfer service trigger condition is met, the S-CSCF network element forwards the call request to the calling
Transfer AS；
Call forwarding AS judges whether the first terminal and the distance of the second terminal are less than predetermined threshold value；
When the distance of the first terminal and the second terminal is less than the predetermined threshold value, call forwarding AS is according to institute
The call request is forwarded to the second terminal by the S-CSCF network element by the mark for stating second terminal.
2. method according to claim 1, it is characterised in that the S-CSCF network element is according to the mark of the first terminal
The service configuration information for obtaining first terminal includes：
The S-CSCF network element obtains the CAMEL-Subscription-Information of the first terminal, the signing letter according to the mark of the first terminal
Service configuration information of the breath comprising the first terminal.
3. method according to claim 1, it is characterised in that call forwarding AS is according to the mark of the second terminal
The call request is forwarded to the second terminal by the S-CSCF network element, including：
Call forwarding AS changes the mark for being designated the second terminal of the terminal called in the call request；
The call request is forwarded by the S-CSCF network element by call forwarding AS according to the mark of the second terminal
To the second terminal.
4. method according to claim 1, it is characterised in that include：
When the distance of the first terminal and the second terminal is more than or equal to predetermined threshold value, call forwarding AS is according to institute
The call request is forwarded to the first terminal by the S-CSCF network element by the mark for stating first terminal.
5. method according to claim 1, it is characterised in that also include：Call forwarding AS to schedule between
Every the positional information for obtaining the first terminal and the second terminal and preserve.
6. a kind of system of call forwarding, it is characterised in that the system includes：
S-CSCF network element, for receiving call request, the call request carries the mark of first terminal, and the first terminal is
The corresponding terminal called of the call request；
The S-CSCF network element, is additionally operable to obtain the service configuration information of first terminal, institute according to the mark of the first terminal
Stating service configuration information includes the mark of call transfer service trigger condition and second terminal, and the second terminal is described first
The call request is carried out terminal the purpose terminal after call forwarding；
The S-CSCF network element, is additionally operable to, when the call transfer service trigger condition is met, forward the call request extremely
Call forwarding AS；
Whether call forwarding AS, for judging the distance of the first terminal and the second terminal less than predetermined threshold value；
Call forwarding AS, is additionally operable to when the distance of the first terminal and the second terminal is less than the predetermined threshold value
When, the call request is forwarded to the second terminal by the S-CSCF network element by the mark according to the second terminal.
7. system according to claim 6, it is characterised in that
The S-CSCF network element, is additionally operable to obtain the CAMEL-Subscription-Information of the first terminal, institute according to the mark of the first terminal
State the service configuration information of the CAMEL-Subscription-Information comprising the first terminal.
8. system according to claim 6, it is characterised in that call forwarding AS, being additionally operable to change the calling please
The mark for being designated the second terminal of the terminal called in asking；
Call forwarding AS, is additionally operable to, according to the mark of the second terminal, the call request is passed through the S-CSCF net
Unit is forwarded to the second terminal.
9. system according to claim 6, it is characterised in that call forwarding AS, is additionally operable to when the first terminal
When being more than or equal to predetermined threshold value with the distance of the second terminal, the call request is led to by the mark according to the first terminal
Cross the S-CSCF network element and be forwarded to the first terminal.
10. system according to claim 6, it is characterised in that call forwarding AS, between being additionally operable to schedule
Every the positional information for obtaining the first terminal and the second terminal and preserve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153192.5A CN106454785A (en) | 2016-12-14 | 2016-12-14 | Call forwarding method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611153192.5A CN106454785A (en) | 2016-12-14 | 2016-12-14 | Call forwarding method and system |
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| CN106454785A true CN106454785A (en) | 2017-02-22 |
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| CN201611153192.5A Pending CN106454785A (en) | 2016-12-14 | 2016-12-14 | Call forwarding method and system |
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Application publication date: 20170222 |