CN1901513A - Communication system and method for determining next joint availability using presence information - Google Patents
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Abstract
A communication system determines next joint availability for a communication session between an originating user and at least one destination user using presence information. The communication system includes a presence server for collecting and storing presence information indicating current and future availability of the originating and destination users. When a request for the communication session is received from the originating user, and the destination user is currently unavailable for the communication session, a next available time for the communication session is determined from the presence information of the originating and destination users.
Description
The cross reference of related application
The application requires the U.S. Provisional Application No.60/677 of submission on May 3rd, 2005,178 priority.
Technical field
Relate generally to of the present invention is based on online (presence-based) communication system, and relate to especially use online information determine two sides or in many ways between the next up duration of communication session.
Background technology
Based on online interactive communication service by make callee's (online entity) to calling party (online observer (watcher)) issue in real time its online information (such as current state of availability, activity, local zone time, position, vehicular equipment/application program etc.) with and preference information (for example equipment preference) realized more efficient and more effective communication session.Online information and preference information have improved the efficient of setting up various types of communication sessions, these communication sessions such as voice communication session, textcommunication session and multimedia (video+) communication session.
On-line system adopts the line server of the online information of a plurality of online entities of management.Line server is operating as from various such as calendar/calendar application, telephony application or instant message application program and collects online information line source, and integrates this online information to reflect the presence of online entity.For example, as long as predetermined online entity occurrence has taken place, revise the instant message state on log-on message, the change equipment on online entity device, the slave unit or foregone conclusion spare be input in the calendar of online entity such as opening or closing, be responsible at line source just to line server generation online information.As example, if arranged on the calendar of online entity one from 10:00a.m. (morning) to the 12:00p.m. meeting in (afternoon), then at 10:00a.m, calendar/calendar application can notify the presence of the online entity of line server to be set to " just in session ".As another example, when online entity was initiated or received phone calls, the presence of the online entity of telephony application notice line server was set to " conversing ".
Customized current addressable this online information of observer of the online information of online entity.For example, suppose that the observer is that initiation user and online entity are the destination users, then initiate the user and can access reflection destination user's the current availability and the destination user online status of the preference of communicate by letter, and when trial and destination user set up communication session, utilize this destination user online status.Yet, if if the current unavailable or communication trial failure of destination user is then initiated the user and must be communicated trial again under the situation of not understanding the priori of uniting the available time of initiating user and destination user on the time after a while next time.Therefore, when the destination user is unavailable once more, initiates the user and may attempt next time.
Therefore, need a kind of communication system, it is used for the current availability and the following availability of integrated multi-party, to carry out communication immediately between in many ways or to carry out following communication in uniting on the available time of all participants next time between in many ways.
Summary of the invention
Embodiments of the invention provide a kind of be used for determining to initiate the active user's availability of the communication session between user and at least one the destination user and the communication system of following user availability.This communication system comprises line server, and this line server is used to collect and store from a plurality of online information about a plurality of online entities at line source, and wherein online information shows the current availability and the following availability of online entity.This communication system also comprises contact manager, this contact manager is used to receive the request that communicates session from initiating the user, from line server, extract user and the destination user's online information initiated, and user and/or destination user are current unavailable in response to initiating, and determine the next up duration of communication session according to initiating user and destination user's online information.
In one embodiment, contact manager also is operating as the next up duration that is provided for beginning with the destination user communication session subsequently to the initiation user.In a further embodiment, line server is also safeguarded the online information of each online entity, and contact manager filters offering the information relevant with the next up duration of communication session of initiating the user based on the preference information of initiating user and/or destination user.
In another embodiment, this communication system also comprises media server, and this media server is used to receive from the request that communicates session of initiating the user and with this request and offers contact manager.This media server also is operable as is initiating to set up communication session between user and the destination user on the next up duration.
Embodiments of the invention also provide a kind of method that is used to use the online information that shows the current availability of initiating user and destination user and following availability to determine the availability of the communication session between initiation user and at least one the destination user.This method comprises that reception is from the request that communicates session of initiating the user, extract user and the destination user's online information initiated, and current unavailable in response to initiation user and/or destination user, determine the next up duration of communication session according to initiating user and destination user's online information.
Description of drawings
In conjunction with the accompanying drawings,, can obtain to understand more comprehensively to of the present invention with reference to following detailed description, wherein:
Fig. 1 shows the exemplary on-line system according to the embodiment of the invention;
Fig. 2 show according to the embodiment of the invention be used to use online information to determine the example communication system of next availability of communication session;
Fig. 3 show according to the embodiment of the invention be used to use online information to determine the flow chart of the example process of the joint availability of communication session next time; And
Fig. 4 is the signal flow graph that illustrates according to the example communication session flow process of the embodiment of the invention.
Embodiment
With reference to figure 1, wherein show the exemplary on-line system 100 that to realize various embodiment of the present invention.On-line system 100 comprises online entity 110 and the one or more equipment 120 that are associated with online entity 110.Online entity 110 is represented the destination user and is provided online information about destination user's online state to on-line system 100.Each equipment 120 all is can send on communication network 130 and/or the physical communication equipment of received communication.The example of this equipment 120 includes but not limited to fixed line phone 120a, notebook 120b, personal computer 120c, mobile phone 120d and PDA(Personal Digital Assistant) 120e.In Fig. 1, communication network 130 representatives can therefrom send the network of any type of medium (voice of circuit switching or packet switching or data).For example, communication network 130 can comprise public switch telephone network (PSTN), Public Land Mobile Nerwork (PLMN), one or more private local area network (LAN), internet and/or the network of any other types or the combination of network.
On-line system 100 comprises that also one or more online users act on behalf of 140 (PUA), one or more observers 170 of 150, one line servers 160 of an online agency (PA) and online entity 110.PUA 140 can handle and provide the online information of online entity 110.In Fig. 1, show an independent PUA 140 at each equipment 120.Yet, should be appreciated that in other embodiments application program that the number of PUA 140 can be supported based on number and type, the equipment 120 of equipment 120 and system configuration and change.Each PUA 140 generates the part of all on-line information of online entity 110 independently.Usually, when presence changed, PUA 140 generated online information.The example that presence changes includes but not limited to revise on opening and closing equipment 120, the slave unit 120 the instant message state on log-on message and the change equipment 120.
Collect from the online information of each PUA 140 by one or more online agencies (PA) 150.In Fig. 1, a PA 150 only is shown for the sake of simplicity.Yet, should be appreciated that in other embodiments an online entity 110 can have a plurality of PA 150, each PA 150 is responsible for a current subclass that online entity 110 is effectively all customized (from observer 170 the request to online information).In addition, PA 150 collects from calendar/calendar application 50 (Microsoft Exchange Server for example, IBM Lotus Notes , MeetingMaker or other similar application programs) and the online information of other online information sources 60 (for example instant message application program).PA 150 integrates from the online information in each source (for example PUA140, calendar 50 and other sources 60) and safeguards the current complete online information of online entity 110.PA 150 also provides online information to one or more observers 170 (calling party or communication session promoter) of online entity 110.
The example that On-line system 100 uses online protocol to provide online service to online entity 110 and observer 170. can be used for the online protocol of on-line system 100 is conversation initialized protocol (SIP); The people such as " SIP: conversation initialized protocol " draft 3261 that the people such as J.Rosenberg delivered in June, 2002 (" SIP:Session Initiation Protocol " RFC:3261) and A.Roach are described this in " conversation initialized protocol (SIP)-particular event notice " draft 3265 (" Session Initiation Protocol (SIP)-SpecificEvent Notification " RFC:3265) of delivering in June, 2002, comprise its content in this mode by reference. SIP is used for establishment, modification and the application layer control protocol of (voice, text and/or the multimedia) session that stops communicating by letter.SIP can with such as real-time transport protocol (rtp), real time streaming protocol (rtsp), Session Description Protocol (SDP), International Telecommunication Association's TC Telecommunication Committee (ITU-T) is standard (coding and decoding video) H.263, G.711 standard and standard (audio coding decoding) and other or additional standard or other agreements the agreement are used.Should recognize agreement and the configuration that to use other or add. G.729
The SIP network can be routed to the request from any user on this network on the server of the login state of safeguarding this user.Therefore, the SIP network make calling party (observer) can send to SUBSCRIBE (customization) request of online information that the specific callee (online entity 110) who is routed to line server 160 is relevant, wherein line server 160 is safeguarded the online information of online entity 110.For the purpose on the efficient, during operation, line server 160 and PA 150 can and sip agent/Register colocated.
With reference now to Fig. 2,, wherein show according to the embodiment of the invention be used to use online information to determine the example communication system 200 of next availability of communication session.In Fig. 2, initiate user 210 and send the request 250 that communicates session (for example real-time or non real-time voice, text or multimedia) with one or more destination users 220 (for simplicity, only showing one of them) to media server 230 by communication network 130 (for example PSTN, PLMN, LAN, internet etc.).Media server 230 comprise to medium (for example data etc.) carry out route and/or with medium from any apparatus of the required format conversion of one type network, such as circuit switching exchange, router, gateway device or other equipment for the required form of the network of another type.
Request 250 can be in order to carry out the inquiry of the availability of future communications session with the actual trial of destination user 220 beginnings communication session (for example by click the dialing that name is carried out in GUI (graphic user interface)) immediately or in order to definite destination user 220.For example, destination user's online information can be shown to and initiate user 210, notice initiates that user 210 destination users 220 are current can to communicate session, thereby makes that initiating user 210 sends the request 250 of carrying out the future communications session.
In response to the request 250 that receives, media server 230 is transmitted request 250 to destination user's communications manager (CM) 240.CM 240 management are registered to the destination user 220 of line server 160 and the communication session of other online entity/user (observer).CM240 is usually located at the destination user side with line server 160.Yet in other embodiments, CM 240 can disperse with line server 160 or be remote apart.CM 240 can or can realize on autonomous device with media server 230 or line server 160 colocated.
Request 250 comprises the sign (for example calling party URI (unified resource identifier)) of initiating user 210, destination user 220 sign (for example callee URI), and the medium type that is used for new communication session of being asked.In addition, request 250 can comprise other standards that are used for communication session.For example, this other standards can comprise safe mode or the agreement that initiation user 210 is asked.After the request of receiving 250, CM 240 is to online information 180 and preference information 190 and initiation user's 210 online information 180 and the request of preference information 190 of line server 160 transmissions to destination user 220.
160 pairs of line servers come the initiation user 210 of the phone information that free PUA (as shown in Figure 1) provide and destination user 220 online information 180, by with initiate schedule information that calendar applications 50 that user 210 and/or destination user 220 be associated provides and integrate by the other online information that other sources of online information provide, and the online information after will integrating 180 and preference information 190 are beamed back CM 240.CM 240 handles online information 180 and the preference information 190 that returns from line server 160, to determine to initiate user 210 at the current presence of the medium type of being asked and the destination user 220 current presence at the medium type of being asked.
The current presence of initiating user 210 and destination user 220 is to determine similarly, and therefore destination user 220 presence is discussed at this.In order to determine destination user 220 presence, CM 240 determines that at first destination user 220 carries out the media state and the availability of the communication session of being asked with the medium type of being asked and other medium types.
Online information 180 is included in each equipment that is registered to destination user 220 in the network, and the medium type supported of each equipment and operation is supported with each application program of the medium type ability that obtains destination user 220 on each equipment medium type.In addition, online information 180 comprises destination user's 220 ongoing (existing) real time communication session.For example, online information 180 can comprise the current number of the current number of the real-time speech communicating session that destination user 220 is participated in, real-time multimedia communication session that destination user 220 is participated in and the current number of the real-time text communication session that destination user 220 is participated in.In addition, in other embodiment, online information 180 can comprise activity-media state mapping (activity-media status mapping), to upgrade media state afterwards at beginning/end scheduled event (such as meeting, out to lunch, drive a car etc.).For example, destination user 220 can be input to preferences data in the on-line system, regulation when the bright destination user of destination user's calendar watch just in session the time medium type all unavailable or have only some medium type to use.
In the exemplary embodiment, CM 240 compares at the current media state of the medium type of being asked and other medium types destination user 220 with preference information 190, preference information 190 has stipulated to enter the maximum number alternately of every kind of medium type that each equipment of the destination user in the on-line system supports.The maximum mutual number of particular media type shows the maximum number of user/real-time, interactive that online entity can be handled before the specific medium state enters " busy " state.User/online entity is defined as the mutual number of maximum the part of its preference rule.According to the maximum mutual number in preference information 190 that provides by line server 160 and the online information 180, CM 240 determine destination users 220 with the medium type of being asked and other medium types with initiate media state and the availability that the user carries out the real time communication session of being asked.
For example, in one embodiment, destination user 220 can be in a kind of state in the following state at the media state of particular media type: " activation ", " in the use ", " busy " and " non-activation ".Yet, should be appreciated that term " media state " is not limited to these states, and can determine and show with any other modes.Adopt above example states, for every kind of medium type, " non-activation " state shows that user/online entity also is not ready for handling mutual with this particular media type.For example, when destination user 220 did not use any device logs that can support this particular media type to network, " non-activation " state was suitable for." activation " state shows that user/online entity has been ready to handle the mutual of this particular media type.For example, when destination user 220 used the one or more device logs that can support this particular media type to network, " activations " state was suitable.
For every kind of medium type, " in the use " state notifying CM 240 destination users 220 have participated in using one or more communication sessions of this particular media type.Yet destination user 220 still can handle the other mutual of same medium type.For every kind of medium type, the bright destination user 220 of " busy " state table can not participate in any communication session of this medium type.For example, " busy " state may be caused by the limitation of resource (for example communication channel), by the limitation of online physical capabilities (for example, reached maximum mutual number at particular media type) cause, perhaps show that this destination user is just in session, the disabled preference of particular media type causes when travelling, (off-site) leaving from station etc. when destination user's calendar by regulation.In addition, the reason that causes " busy " state is to think the current activated equipment of supporting the medium type of being asked simultaneously and meeting the destination user 220 of other standards of being stipulated by initiation user 210.
If for " busy " and/or to initiate user's 210 media states at the medium type of being asked be " non-activation " or " busy ", then CM 240 determines among destination users 220 and the initiation user 210 one for the communication session of being asked " unavailable " or the two " unavailable " to destination user 220 at the media state of the medium type of being asked.Yet, if destination user 220 and the media state of initiating user 210 show when the former two all available for communication session, then CM 240 is identified for the equipment of new communication session, and will send to media server 230 such as the application program and the facility information the media channel of device identification, equipment, to set up communication session via communication network 130.
If CM 240 determines to initiate user 210 and/or the destination user 220 current communication sessions of being asked for the request medium type are unavailable or initiate user 210 or destination user 220 does not reply communication session, then CM 240 determines the communication session failure.If if communication session failure or ask 250 to be requests to the future communications session, then CM 240 compares destination user 220 online information 180 and preference information 190 with the online information 180 and the preference information 190 of initiating user 210, with determine to initiate user 210 and destination user 220 next for the communication session of the medium type of being asked or other medium types all should be available one or more times (hereinafter being called next up duration 260).
For example, CM 240 can compare the calendar online information 180 of initiating user 210 with destination user 220 calendar online information 180, to determine that initiation user 210 and destination user 220 are at next available time of one or more medium types.As example, suppose that the current time is 9:00a.m., and destination user's calendar shows this destination user unavailable between 9:00a.m and 10:00a.m. (for example just in session), and the calendar of initiating the user shows that this initiation user is unavailable between 9:30a.m. and 10:30a.m., and then initiating first time that user 210 and destination user 220 can be available is 10:30a.m..
In one embodiment, CM 240 determines the next up duration 260 of communication session and next up duration 260 is sent to initiation user 210 this has notified initiation user 210 when to carry out setting up with destination user 220 trial next time of communication session.Next up duration 260 comprises the special time (for example 10:30a.m.) or the time interval.Continue above example, the calendar of supposing the destination user shows that this destination user can become again unavailable (for example carrying out another meeting) at 11:00a.m., attempts again communicating session with destination user 220 when then next up duration 260 might show certain that initiate that user 210 should be between 10:30a.m and 11:00a.m..
In another embodiment, CM 240 checks the preference information of initiating user 210 and destination user 220, to determine whether the either party does not also customize " next up duration " function, and perhaps whether the either party has defined and offered the relevant range of information of next up duration of initiating user 210 and/or destination user 220.In the case, CM 240 can not determine that next up duration or 240 couples of CM offer the information relevant with next up duration 260 of initiating among user 210 and the destination user 220 or offering the two simultaneously and filter.
In other embodiments, CM 240 determines a plurality of next up durations 260 and the one or more next up duration in these next up durations 260 is sent to initiation user 210.For example, if CM 240 determines to initiate users 210 and destination user 220 between 10:30a.m. and the 11:00a.m. and can be available on the time interval between 2:00p.m. and the 3:30p.m., then CM 240 can send to two time intervals and initiate user 210.
In another embodiment, CM 240 also is provided with a trigger point automatically to initiate setting up communication session between user 210 and the destination user 220 on the next up duration 260.For example, be next up duration 260 when the inside (this locality) of CM 240 clock shows the current time, then CM 240 can attempt setting up communication session by each branch that sets up communication session respectively.If the communication session on the next up duration is owing to a side or present current unavailable failure of two sides, then CM can send a notification message to initiating user 210, notice is initiated the failure of user's 210 communication sessions, is attempting attempting communication session again on communication session and/or scheduled time in future on the determined next up duration on the Time To Failure again.For example, can determine following scheduled time according to the pre-configured time cycle between the continuous communication session trial.
In yet another embodiment, user 210 and destination user's 220 calendar applications 50 is initiated in CM 240 visits, and on next up duration 260 communication session in the calendar applications 50 of initiating user and destination user is dispatched.For example, if next up duration 260 is 10:30a.m., then CM 240 input on the calendar of initiating user and destination user simultaneously " initiating user and destination communicating between users session " when 10:30.
In yet another embodiment, CM sends a notification message (for example instant message, Email, voice mail etc.) to destination user 220, and notice destination user 220 initiates users to the request of communication session and the next up duration 260 of communication session.For example, can with next up duration 260 as with initiate the suggestion time that user 210 communicates session and submit to destination user 220.Destination user 220 can confirm and agree the alternative time of this next one up duration 260 or suggestion communication session.Both sides of negotiation time is easily all being initiated between user 210 and the destination user 220 in the communication that CM 240 can adopt for example instant message (IM), Email, voice mail, terminal display, user key-press or other types.The next up duration 260 of reaching an agreement can be stored among the CM 240 to set up communication session as the trigger point, perhaps should be arranged in the calendar of initiating user 210 and destination user 220 by next one up duration 260.
Should be noted that can adopt the hardware that is used for managing communication sessions (for example real-time or non real-time voice, text and multimedia communication sessions), software, firmware or its to make up constructs or dispose CM 240.As an example, CM 240 can comprise the memory of the instruction and data that one or more processors of execution command and storage of processor are used.It is generally acknowledged that processor is the equipment that drives all-purpose computer.Yet, note that other processor device that can use equally such as microcontroller, field programmable gate array (FPGA), application-specific integrated circuit (ASIC) (ASIC) or its combination, and these processor devices can obtain benefit described herein and advantage.In one embodiment, CM 240 can comprise the one or more processes such as software application, and these processes provide activity, function or a series of task that produces particular result, are used for managing communication sessions.
Fig. 3 be illustrate according to the embodiment of the invention be used to use online information to determine the flow chart of the example process 300 of the joint availability of communication session next time.In square frame 310, keep showing the current availability of a plurality of online entities and the online information of following availability.These online information are to collect line source from a plurality of such as telephony application, calendar applications and other application programs.In square frame 320, receive and carry out from initiating the request of user at least one destination user's communications session.
In square frame 330, extract user's online information and each the destination user's online information initiated, communicate the current availability of session in square frame 340, to determine initiation user and destination user.If all participants current all available (the "Yes" branch of square frame 340) are then initiating to set up communication session between user and the destination user in square frame 350.Yet, if based on online information or based on not setting up communication session (the "No" branch of square frame 340), the one or more users that initiate among user and the destination user are current unavailable for communication session, then determine the next up duration of communication session according to initiating user and destination user's online information in square frame 360.In square frame 370, this next one up duration is offered the initiation user be used for setting up following communication session with the destination user.
Fig. 4 illustrates the signal flow graph of setting up the exemplary flow of communication session according to the joint availability based on initiating user 210 and destination user 220 of the embodiment of the invention.In step 410, initiate user's 210 transmissions and communicate the request of session to contact manager (CM) 240 with the destination user.In response to the request that receives, in step 420, CM 240 initiates user's online information and destination user's online information from line server 160 requests, and in step 430, line server 160 offers CM 240 with the online information of being asked and is used for determining that initiation user 210 and destination user 220 communicate the current availability and the following availability of session.
If it is current unavailable for communication session to initiate user 210 and/or destination user 220, then in step 440, CM 240 determines the next up duration of communication session according to the online information of initiating user 210 and destination user 220.In step 450, CM240 should next one up duration offers and initiates that user 210 is used for and destination user 220 sets up following communication session.Therefore, in step 460, initiate user 210 and on indicated next up duration, send the new request that communicates session with destination user 220.
In response to the request that receives, in step 470, CM 240 initiates user's online information and destination user's online information from line server 160 requests once more, and in step 480, line server 160 offers CM 240 with the online information of being asked and is used for determining that initiation user 210 and destination user 220 communicate the current availability of session.If two sides are current available, then in step 490, initiating to set up communication session between user 210 and the destination user 220.
Those of ordinary skill in the art will be appreciated that, for various application, can make amendment and changes novel principles described in the present invention.Therefore, the scope of patented subject matter should not be limited to described any particular exemplary to be described, and should be limited by following claim.
Claims (10)
1. one kind is used to use online information to determine the communication system of the availability of the communication session between initiation user and at least one the destination user, comprising:
Line server, it is used to collect and store from a plurality of online information about a plurality of online entities at line source, described a plurality of online entity comprises described initiation user and described at least one destination user, and described online information shows the current availability and the following availability of described online entity; And
Contact manager, it is connected to the request of carrying out described communication session of reception from described initiation user;
Wherein said contact manager is operable as the described online information of extracting described initiation user and described at least one destination user from described line server; And
Wherein current unavailable in response to the one or more users among described initiation user and described at least one destination user, described contact manager is operable as the next up duration of determining described communication session according to described initiation user and described at least one destination user's described online information.
2. communication system according to claim 1, wherein:
Describedly a plurality ofly comprise calendar applications at line source, described calendar applications provides schedule information for described initiation user and described at least one destination user; And
Described online information comprises described schedule information.
3. communication system according to claim 1, wherein said contact manager also are operable as at the described calendar applications that is used for described initiation user and described destination user described communication session are dispatched at next up duration.
4. communication system according to claim 2, wherein:
Describedly a plurality ofly also comprise telephony application at line source, described telephony application is provided for determining the media status information of the media state of one or more medium types of being associated with the described user of initiation and described at least one destination user;
Described online information comprises described media status information; And
Described request comprises a medium type of being asked in the described medium type.
5. communication system according to claim 4, wherein said next up duration comprises the one or more next up duration at one or more described medium types.
6. communication system according to claim 1, wherein said next up duration comprises the one or more times in the following time:
The special time that described at least one destination user can use;
Described at least one destination user and all available special time of described initiation user;
The time interval that described at least one destination user can use;
Described at least one the destination user and all available time interval of described initiation user;
A plurality of time intervals that described at least one destination user can use; And
Described at least one destination user and all available a plurality of time intervals of described initiation user.
7. method that is used for determine initiating the availability of the communication session between user and at least one the destination user comprises:
Maintenance is from a plurality of online information about a plurality of online entities of collecting at line source, described a plurality of online entity comprises described initiation user and described at least one destination user, and described online information shows the current availability and the following availability of described online entity;
Reception is from described initiation user's the request of carrying out described communication session;
Extract described initiation user and described at least one destination user's described online information; And
Current unavailable in response to the one or more users among described initiation user and the described destination user, determine the next up duration of described communication session according to described initiation user and described at least one destination user's described online information.
8. method according to claim 7, wherein said maintenance also comprises the step of collecting as the described online information of the schedule information that is used for described initiation user and described at least one destination user from calendar applications, and described method also comprises step:
At the described calendar applications that is used for described initiation user and described destination user described communication session is dispatched at next up duration.
9. method according to claim 8, wherein said maintenance also comprises step:
From telephony application, collect described online information, and wherein said next up duration is associated with one or more described medium types as the media status information of the media state of the one or more medium types that are used for determining being associated with the described user of initiation and described at least one destination user.
10. method according to claim 7 also comprises step:
Between described initiation user and described at least one destination user, set up described communication session at described next up duration.
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| US67717805P | 2005-05-03 | 2005-05-03 | |
| US60/677,178 | 2005-05-03 | ||
| US11/227,476 | 2005-09-15 |
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| CN1901513A true CN1901513A (en) | 2007-01-24 |
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| CN 200610072640 Pending CN1901513A (en) | 2005-05-03 | 2006-04-05 | Communication system and method for determining next joint availability using presence information |
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| CN102571704A (en) * | 2010-12-24 | 2012-07-11 | 华为终端有限公司 | Management conversation initiating and notifying method, managed terminal and management server |
| CN107005550A (en) * | 2014-11-17 | 2017-08-01 | 微软技术许可有限责任公司 | Related communication model selection |
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