CN105007143A - Call preservation and recovery method and system - Google Patents
Call preservation and recovery method and system Download PDFInfo
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- CN105007143A CN105007143A CN201410157674.2A CN201410157674A CN105007143A CN 105007143 A CN105007143 A CN 105007143A CN 201410157674 A CN201410157674 A CN 201410157674A CN 105007143 A CN105007143 A CN 105007143A
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- application server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
Abstract
The invention discloses a call preservation and recovery method and system. The method comprises the following steps: an application server (AS), after a calling terminal establish a conversation with a called terminal, storing session information to a cloud end; and when the AS generates a fault, a preset trusteeship server of the AS obtaining the session information from the cloud end to carry out corresponding service processing. According to the invention, each AS is provided with at least one trusteeship server, the session information of the AS is stored at the cloud end, and when the AS generates the fault, a session is recovered on a selected most idle trusteeship server, such that the subsequent flow runs normally, the call loss problem caused by shutdown or disconnection of the AS is effectively reduced, and user experiment is greatly improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and system realizing calling out Save and restore.
Background technology
Broadband call platform is by the application server (Application Server, AS) of dialogue-based initiation protocol (Session Initialization Protocol, SIP), is realized the interface of input and output by Session Initiation Protocol.
Current broadband call platform is all the calling realized based on home server, when the machine of delaying or chain rupture appear in home server AS, then all session informations all can be lost, prior art does not have good solution to this, as call loss process, thus operator can only be have impact on to follow-up call statistics, ticket statistics etc.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide a kind of realization and calls out the method and system of Save and restore, to delay the call loss problem occurred after machine or chain rupture in order to solve home server AS in prior art.
For solving the problem, the present invention is mainly achieved through the following technical solutions: one aspect of the present invention provides a kind of method realizing calling out Save and restore, and the method comprises:
Session information, after calling terminal and terminal called set up call, is saved in high in the clouds by application server;
When described application server breaks down, the default Entrust Server of described application server obtains described session information from described high in the clouds and carries out corresponding Business Processing.
Preferably, described session information includes but not limited to the related information of calling terminal information, terminal called information, media negotiation information, calling and called terminal and carries out the information of follow-up interaction process for calling and called terminal.
Preferably, the method also comprises: whether discharge device detects described application server alternately by heartbeat and break down.
Preferably, detect described application server alternately by heartbeat whether to break down and specifically comprise:
Detecting alternately by carrying out heartbeat with described application server, when exceeding pre-determined number and do not receive the heartbeat response message of described application server, then judging this application server fault.
Preferably, the default Entrust Server of described application server is multiple, when described application server breaks down, select the most idle Entrust Server to obtain described session information from high in the clouds according to the resource service condition of Entrust Server described in each and carry out corresponding Business Processing.
Preferably, described Entrust Server obtains the step that described session information carries out corresponding Business Processing and specifically comprises from described high in the clouds:
Described Entrust Server obtains described session information with the call replacing described application server to continue described calling terminal and described terminal called from described high in the clouds, or described Entrust Server obtains described session information from described high in the clouds and carries out call statistics and/or ticket statistics according to described session information.
The present invention additionally provides a kind of system realizing calling out Save and restore on the other hand, and this system comprises:
Application server, for after calling terminal and terminal called set up call, is saved in high in the clouds by session information;
Entrust Server, for when described application server breaks down, obtains described session information from described high in the clouds and carries out corresponding Business Processing.
Preferably, described session information includes but not limited to the related information of calling terminal information, terminal called information, media negotiation information, calling and called terminal and carries out the information of follow-up interaction process for calling and called terminal.
Preferably, also discharge device is comprised;
Whether described discharge device, break down for detecting described application server alternately by heartbeat.
Preferably, described discharge device also for, detecting alternately by carrying out heartbeat with described application server, when exceeding pre-determined number and do not receive the heartbeat response message of described application server, then judging this application server fault.
Preferably, the default Entrust Server of described application server is multiple;
Described discharge device also for, when described application server breaks down, select the most idle Entrust Server as the Entrust Server of the application server of this fault according to the resource service condition of Entrust Server described in each.
Preferably, described Entrust Server specifically for, when described application server breaks down, described session information is obtained with the call replacing described application server to continue described calling terminal and described terminal called from described high in the clouds, or, obtain described session information from described high in the clouds and carry out call statistics and/or ticket statistics according to described session information.
Beneficial effect of the present invention is as follows:
The present invention is to each application server (Application Server, AS) Entrust Server is all set, and the session information of application server is saved in high in the clouds, when AS breaks down, recover session by Entrust Server, thus follow-up flow process is normally run.The present invention effectively reduces AS and to delay the call loss problem that machine or chain rupture bring, and session is kept at high in the clouds, reduces regional restriction, and substantially increases Consumer's Experience.
Other features and advantages of the present invention will be set forth in the following description, and the becoming apparent from specification of part, or by implementing the present invention and understanding.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Fig. 1 is the structure composed schematic diagram of the system of the realization calling Save and restore of the embodiment of the present invention;
Fig. 2 is the flow chart of the method for the realization calling Save and restore of the embodiment of the present invention;
Fig. 3 is that the calling of the embodiment of the present invention preserves flow chart beyond the clouds;
Fig. 4 is that the calling of the embodiment of the present invention recovers flow chart beyond the clouds;
Fig. 5 is the structure composed schematic diagram of the system of the another kind realization calling Save and restore of the embodiment of the present invention;
Fig. 6 is the composition structural representation of the system of another realization calling Save and restore of the embodiment of the present invention.
Embodiment
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing forms the application's part, and together with embodiments of the present invention for explaining principle of the present invention.For purpose of clarity and simplification, when it may make theme of the present invention smudgy, illustrating in detail of known function and structure in device described herein will be omitted.
The main purpose of the embodiment of the present invention is to provide a kind of method and system realizing calling out Save and restore, to each application server (Application Server, AS) at least one Entrust Server is all set, and the session information of application server is saved in high in the clouds, when AS breaks down, recover session by Entrust Server, thus follow-up flow process is normally run.The present invention effectively reduces AS and to delay the call loss problem that machine or chain rupture bring, and session is kept at high in the clouds, reduces regional restriction, and substantially increases Consumer's Experience.Just by several specific embodiment, technical scheme of the present invention is described in detail below.
Fig. 1 is the composition structural representation of the system of the realization calling Save and restore of the embodiment of the present invention, see Fig. 1, the system realizing calling Save and restore of the present invention comprises: discharge device (PROXY) and multiple application server AS, each AS all at least arranges an Entrust Server, PROXY configuration can obtain the trustship AS of each AS, and the external link information of PROXY of all AS configurations is all identical with index.Described AS configures the external link of PROXY and comprises: the link information between PROXY and core net and with the call number etc. generated during this link of configuration.
Embodiments provide a kind of method realizing calling out Save and restore, see Fig. 1 and 2, the method comprises:
Session information, after calling terminal and terminal called set up call, is saved in high in the clouds by S101, application server;
Session information of the present invention includes but not limited to the related information of calling terminal information, terminal called information, media negotiation information, calling and called terminal and carries out the information of follow-up interaction process for calling and called terminal.
That is, application server of the present invention is after calling and called terminal media has been consulted, and session information is saved in high in the clouds.Such as, during calling incoming call, dialogue-based initiation protocol (Session Initialization Protocol, SIP) signaling enters AS by discharge device (PROXY) distribution, carry out Business Processing, be sent to terminal called by PROXY again, when media negotiation completes, session information be kept at high in the clouds.Accordingly, when calling is hung up, SIP signaling enters AS by PROXY distribution, carries out Business Processing, when media negotiation completes, the session information on AS is kept at high in the clouds.The ToTag information of SIP signaling of the present invention comprises device number, the activity sequence number of AS, and when this application server breaks down, also comprise trustship information in SIP signaling, described trustship information specifically comprises the device number etc. of trustship AS.
S102, when described application server breaks down, the default Entrust Server of described application server obtains described session information from described high in the clouds and carries out corresponding Business Processing.
In the embodiment of the present invention, whether discharge device detects described application server alternately by heartbeat and breaks down.Be specially, discharge device detects alternately by carrying out heartbeat with described application server, when exceeding pre-determined number discharge device and do not receive the heartbeat response message of described application server, then judges this application server fault.
Heartbeat of the present invention detects alternately and is initiated by discharge device, and the request message that discharge device sends comprises the device number and movable serial number information etc. of AS.The heartbeat response message that AS returns comprises the device number and movable serial number information etc. of the current resources situation of AS, activity sequence number and trustship AS.
Present invention also offers a preferred embodiment, described application server can set multiple Entrust Server, when detecting that certain application server breaks down, discharge device selects the most idle Entrust Server according to the resource service condition of Entrust Server described in each, and triggers this Entrust Server and obtain described session information to high in the clouds and carry out corresponding Business Processing.
Specifically, discharge device PROXY judges whether to exceed the heartbeat response message not receiving AS for N time of specifying, if then judge AS fault.Another AS is selected to carry out trustship, if current AS's only has a trustship AS, then PROXY is sent to this AS and conversates trustship, if there is multiple trustship AS, then PROXY carries out trustship according to the most idle AS in the current multiple trustship AS of the heartbeat response information acquisition of trustship AS.In that case, the heartbeat response message between PROXY and trustship AS must comprise the resource service condition information of trustship AS, such as, and session uses number, media negotiation completes session number and total session number etc.
The step that in the embodiment of the present invention, Entrust Server carries out corresponding Business Processing according to described session information specifically comprises:
Described Entrust Server obtains all session informations of this application server broken down to high in the clouds, and carries out corresponding Business Processing according to described session information.Such as, the device number of the AS of the fault in the SIP signaling that trustship equipment sends according to discharge device obtains its all session information data of preserving to high in the clouds, and the SIP signaling of incoming call is again sent to the enterprising row relax of trustship AS by discharge device.
Namely the present invention is after discharge device detects certain application server fault, notify that corresponding Entrust Server carries out trustship to the application server of fault, when calling SIP signaling enters again, message sends to this Entrust Server to carry out corresponding Business Processing by discharge device.
Described Entrust Server in the present invention obtains the step that described session information carries out corresponding Business Processing and specifically comprises from described high in the clouds: described Entrust Server obtains described session information with the call replacing described application server to continue described calling terminal and described terminal called from described high in the clouds, and other operation of subsequent terminal, as call forwarding etc.; Or described Entrust Server obtains described session information from described high in the clouds and carries out call statistics or ticket statistics according to described session information.
Cloud in the present invention stores and mainly stores in the mode of key-value, and with the device number of application server, activity sequence number and session identification composition key value, the session information that will preserve is saved in high in the clouds as value value.
Below method of the present invention is described in detail:
Fig. 3 is that calling of the present invention preserves flow chart beyond the clouds, and Fig. 5 is the structure composed schematic diagram of the system of the another kind realization calling Save and restore of the embodiment of the present invention, as shown in Figures 3 and 5, calls out the step of preserving beyond the clouds and specifically comprises:
Step 1, core net make a call, and use SIP signaling;
Step 2, PROXY resolve message header and search the object AS information that will forward;
Step 3, message is forwarded to AS1;
Step 4, AS1 resolve message, carry out related service process;
Step 5, return response to PROXY;
Step 6, return response to core net;
If step 7 media negotiation completes, then send preservation session information and carry out preservation data to high in the clouds, otherwise the flow process proceeding front 6 steps carries out media negotiation, until complete;
Step 8, high in the clouds is asynchronous returns event memory;
Step 9, core net send and hang up message to PROXY;
Step 10, PROXY resolve message header and search the object AS information that will forward;
Step 11, message is forwarded to AS1;
Step 12, AS1 resolve message, carry out related service process;
Step 13, return response to PROXY;
Step 14, return response to core net;
If step 15 session information is kept at high in the clouds, need to send releasing session information to high in the clouds;
Step 16, high in the clouds is asynchronous returns release result.
Fig. 4 is that calling of the present invention recovers flow chart beyond the clouds.Compared with Fig. 3, the recovery process in Fig. 4 is many communication process, drop calls message is not mailing to AS1, but mails to AS2.In conjunction with Figure 4 and 5, the method that calling of the present invention recovers beyond the clouds comprises the following steps:
Step 1, core net make a call, and use SIP signaling;
Step 2, PROXY resolve message header and search the object AS information that will forward;
Step 3, message is forwarded to AS1;
Step 4, AS1 resolve message, carry out related service process;
Step 5, return response to PROXY;
Step 6, return response to core net;
If step 7 media negotiation completes, then send preservation session information and carry out preservation data to high in the clouds, otherwise the flow process proceeding front 6 steps carries out media negotiation, until complete;
Step 8, high in the clouds is asynchronous returns event memory;
Step 9, PROXY detect AS1 fault, and find AS2 to be AS the most idle in trustship equipment;
Step 10, transmission recover the message of fault AS1 session to AS2;
Step 11, AS2 return response to PROXY;
Step 12, PROXY forward the object information of application server according to the heartbeat response message management that AS2 returns;
Step 13, AS2 resolve the message recovery that PROXY sends, and go to high in the clouds to fetch data;
Step 14, high in the clouds asynchronous response return the session information data that obtain and the data in high in the clouds are deleted;
Step 15, recovery session complete, and upgrade trustship session information;
Step 16, the session data newly recovered is saved in high in the clouds;
Step 17, high in the clouds is asynchronous returns event memory;
Step 18, core net send and hang up message to PROXY;
Step 19, PROXY resolve message header and search the information of the object application server that will forward;
Step 20, message is forwarded to AS2;
Step 21, AS2 resolve message, carry out related service process;
Step 22, AS2 return response to PROXY;
Step 23, PROXY return response to core net;
If step 24 session information is kept at high in the clouds, need to send releasing session information to high in the clouds;
Step 25, high in the clouds is asynchronous returns release result.
The embodiment of the present invention additionally provides a kind of system realizing calling out Save and restore, and see Fig. 1, this system comprises discharge device and Entrust Server.
Session information, after calling terminal and terminal called set up call, is saved in high in the clouds by application server;
Entrust Server, when described application server breaks down, obtains described session information from described high in the clouds and carries out corresponding Business Processing.Be specially, when described application server breaks down, described session information is obtained with the call replacing described application server to continue described calling terminal and described terminal called from described high in the clouds, or, obtain described session information from described high in the clouds and carry out call statistics or ticket statistics according to described session information.
The session information of application server by all arranging at least one Entrust Server to each AS, and is saved in high in the clouds by the present invention, when AS breaks down, selects to recover session on an Entrust Server the most idle, thus follow-up flow process is normally run.
Whether discharge device of the present invention detects described application server alternately by heartbeat and breaks down, concrete, discharge device detects alternately by carrying out heartbeat with described application server, when exceeding pre-determined number and do not receive the heartbeat response message of described application server, then judge this application server fault.
Present invention also offers a preferred embodiment, each application server is set multiple Entrust Server, discharge device, when detecting that certain application server breaks down, selects the most idle Entrust Server to carry out trustship according to the resource service condition of Entrust Server described in each.
Be described in detail to a kind of system of calling out Save and restore beyond the clouds of the present invention with a concrete example below, this system comprises:
Equipment of the core network: for initiating the calling of SIP signaling, receives the calling of SIP signaling.
Discharge device: the calling for terminal being initiated is transmitted to AS with certain strategy.Keep the heartbeat between AS mutual, detect the running status of AS, and the AS session of breaking down can be allowed another the most idle AS trustship of trustship each other, issue trustship AS at follow-up Signalling exchange.
Application server: SIP signaling process is mutual, preserves session information to high in the clouds, gets session information and recover session from cloud, management AS resource service condition, the fault AS session information of management trustship.
Cloud memory device: store and mainly store in the mode of key-value, with the device number of AS, activity sequence number and session identification composition key value, the session information that will preserve is saved in high in the clouds as value value.
Present invention also offers the another kind of composition structural representation realizing the system of calling Save and restore, specifically as shown in Figure 6.
Discharge device at least comprises: retransmission unit, the first receiving element, the first control unit and the first administrative unit;
Retransmission unit, for forwarding the SIP signaling that sends of core net to AS according to forwarding strategy, when comprising trustship information in SIP signaling, searching trustship AS information, being transmitted to trustship AS;
First receiving element, is forwarded to core net for the SIP signaling receiving AS;
First control unit, for sending heartbeat to AS, receives the heartbeat that AS returns, and according to heartbeat detection Link State, if link is different, sends trustship message to trustship AS;
First administrative unit, for managing the AS information that AS heartbeat is sent, the resource information of the AS that upgrades in time, is supplied to control unit and retransmission unit inquiry;
AS at least comprises: the second control unit, the second receiving element, Service Processing Unit, transmitting element and the second administrative unit;
Second control unit, for and discharge device between heartbeat mutual, obtain the resource service condition of AS, the session of trustship fault AS;
Second receiving element, for receiving the message that discharge device sends, resolves SIP signaling;
Service Processing Unit, for carrying out business logic processing by the result of parsing;
Transmitting element, sends for result being formed SIP signaling;
Cloud unit, for preserving session data to cloud, obtains date restoring session in cloud, management cloud associative operation information;
Second administrative unit, for the information of managing failures AS, as device number, activity sequence number, recovers session number, existing recovery session residue number, session number to be restored etc.
System embodiment of the present invention possesses function and the effect of all embodiments of the method, and related content can reference method embodiment part, discusses no longer in detail at this.
The method and system realizing calling Save and restore provided by the invention, following beneficial effect can be brought:
The present invention all arranges at least one Entrust Server to each application server, and the session information of application server is saved in high in the clouds, when AS breaks down, selects to recover session on an Entrust Server the most idle, thus follow-up flow process is normally run.The present invention effectively reduces AS and to delay the call loss problem that machine or chain rupture bring, and session is kept at high in the clouds, reduces regional restriction, and substantially increases Consumer's Experience.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (12)
1. realize a method of calling out Save and restore, it is characterized in that, comprising:
Session information, after calling terminal and terminal called set up call, is saved in high in the clouds by application server;
When described application server breaks down, the default Entrust Server of described application server obtains described session information from described high in the clouds and carries out corresponding Business Processing.
2. method according to claim 1, it is characterized in that, described session information includes but not limited to the related information of calling terminal information, terminal called information, media negotiation information, calling and called terminal and carries out the information of follow-up interaction process for calling and called terminal.
3. method according to claim 1, is characterized in that, also comprises:
Whether discharge device detects described application server alternately by heartbeat and breaks down.
4. whether method according to claim 3, is characterized in that, detect described application server alternately break down and specifically comprise by heartbeat:
Detecting alternately by carrying out heartbeat with described application server, when exceeding pre-determined number and do not receive the heartbeat response message of described application server, then judging this application server fault.
5., according to the method in claim 1-4 described in any one, it is characterized in that,
The default Entrust Server of described application server is multiple, when described application server breaks down, select the most idle Entrust Server to obtain described session information from high in the clouds according to the resource service condition of Entrust Server described in each and carry out corresponding Business Processing.
6. according to the method in claim 1-4 described in any one, it is characterized in that, described Entrust Server obtains the step that described session information carries out corresponding Business Processing and specifically comprises from described high in the clouds:
Described Entrust Server obtains described session information with the call replacing described application server to continue described calling terminal and described terminal called from described high in the clouds;
Or,
Described Entrust Server obtains described session information from described high in the clouds and carries out call statistics and/or ticket statistics according to described session information.
7. realize a system of calling out Save and restore, it is characterized in that, comprising:
Application server, for after calling terminal and terminal called set up call, is saved in high in the clouds by session information;
Entrust Server, for when described application server breaks down, obtains described session information from described high in the clouds and carries out corresponding Business Processing.
8. system according to claim 7, it is characterized in that, described session information includes but not limited to the related information of calling terminal information, terminal called information, media negotiation information, calling and called terminal and carries out the information of follow-up interaction process for calling and called terminal.
9. system according to claim 7, is characterized in that, also comprises discharge device;
Whether described discharge device, break down for detecting described application server alternately by heartbeat.
10. system according to claim 9, is characterized in that,
Described discharge device also for, detecting alternately by carrying out heartbeat with described application server, when exceeding pre-determined number and do not receive the heartbeat response message of described application server, then judging this application server fault.
11. systems according to any one in claim 7-10, it is characterized in that, the default Entrust Server of described application server is multiple;
Described discharge device also for, when described application server breaks down, select the most idle Entrust Server as the Entrust Server of the application server of this fault according to the resource service condition of Entrust Server described in each.
12. systems according to any one in claim 7-10, is characterized in that,
Described Entrust Server specifically for, when described application server breaks down, described session information is obtained with the call replacing described application server to continue described calling terminal and described terminal called from described high in the clouds, or, obtain described session information from described high in the clouds and carry out call statistics and/or ticket statistics according to described session information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157674.2A CN105007143A (en) | 2014-04-18 | 2014-04-18 | Call preservation and recovery method and system |
| PCT/CN2014/082953 WO2015158058A1 (en) | 2014-04-18 | 2014-07-24 | Method and system for implementing call saving and recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157674.2A CN105007143A (en) | 2014-04-18 | 2014-04-18 | Call preservation and recovery method and system |
Publications (1)
| Publication Number | Publication Date |
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| CN105007143A true CN105007143A (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410157674.2A Pending CN105007143A (en) | 2014-04-18 | 2014-04-18 | Call preservation and recovery method and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105007143A (en) |
| WO (1) | WO2015158058A1 (en) |
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| WO2018068736A1 (en) * | 2016-10-14 | 2018-04-19 | 中兴通讯股份有限公司 | Call method, synchronization server, and call system |
| CN109845389A (en) * | 2017-03-21 | 2019-06-04 | 华为技术有限公司 | A kind of communication means and device |
| CN114500221A (en) * | 2021-12-28 | 2022-05-13 | 阿里巴巴（中国）有限公司 | Cloud system, public cloud control method, equipment and storage medium |
| CN114500221B (en) * | 2021-12-28 | 2024-04-26 | 阿里巴巴（中国）有限公司 | Cloud system, public cloud management and control method, public cloud management and control equipment and storage medium |
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- 2014-04-18 CN CN201410157674.2A patent/CN105007143A/en active Pending
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| CN101667933A (en) * | 2009-10-23 | 2010-03-10 | 杭州华三通信技术有限公司 | Security authentication system and master/standby switching method and device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018068736A1 (en) * | 2016-10-14 | 2018-04-19 | 中兴通讯股份有限公司 | Call method, synchronization server, and call system |
| CN107959693A (en) * | 2016-10-14 | 2018-04-24 | 中兴通讯股份有限公司 | A kind of call-out method, sync server and exhalation system |
| CN109845389A (en) * | 2017-03-21 | 2019-06-04 | 华为技术有限公司 | A kind of communication means and device |
| US11206580B2 (en) | 2017-03-21 | 2021-12-21 | Huawei Technologies Co., Ltd. | Communication method and communications apparatus |
| CN114500221A (en) * | 2021-12-28 | 2022-05-13 | 阿里巴巴（中国）有限公司 | Cloud system, public cloud control method, equipment and storage medium |
| CN114500221B (en) * | 2021-12-28 | 2024-04-26 | 阿里巴巴（中国）有限公司 | Cloud system, public cloud management and control method, public cloud management and control equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015158058A1 (en) | 2015-10-22 |
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Application publication date: 20151028 |