CN101047725A - Method and system for acquiring IP address of agent call session control function - Google Patents
Method and system for acquiring IP address of agent call session control function Download PDFInfo
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- CN101047725A CN101047725A CN 200610066239 CN200610066239A CN101047725A CN 101047725 A CN101047725 A CN 101047725A CN 200610066239 CN200610066239 CN 200610066239 CN 200610066239 A CN200610066239 A CN 200610066239A CN 101047725 A CN101047725 A CN 101047725A
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Abstract
This invention provides a method for getting proxy call session control function IP address including: judging if a terminal applies a dynamic host collocation protocol to collocate its own IP address, if so, it gets the IP address by the selection of the dynamic host collocation protocol combining with domain name system protocol, otherwise, the terminal collocates its own IP address by the non-dynamic host collocation protocol then uses the selection combining with domain name system protocol to get the proxy call session control function IP address.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of method and system of obtaining IP address of agent call session control function.
Background technology
IMS (IP Multimedia Subsystem, IP Multimedia System) be by 3GPP (The3rd Generation Partnership Project, third generation partner program) at first propose opening, standard, flexibly, with insert irrelevant core net framework.IMS is based on SIP (SessionInitiation Protocol, Session initiation Protocol), to move and fixedly IP operation all be suitable for, be widely recognized as the core architecture of next generation network by this area, therefore, in multiple IP network, all need to realize the access of IMS, for example, WiMAX networks such as (Worldwide Interoperability MicrowaveAccess, micro-wave access to global intercommunication).
WiMAX is a kind of wireless metropolitan area network technology based on 802.16d/e, the IEEE802.16 standard of carrying out is a kind of wireless access wide band technology of opening, when having the high speed data transfers advantage, have the mobility in the certain limit concurrently, WiMAX is at deployment, configuration, fail safe, QoS (Quality of Service, service quality), aspect advantage such as long distance coverings is outstanding, is particularly useful for solving last kilometer access problem of metropolitan area network construction.
For IMS, WiMAX is as a kind of IP-CAN (IP Connectivity AccessNetwork, IP connects Access Network).For the WiMAX network of supporting IMS, as its SS/MS (Subscriber Station/Mobile Station, the user orders platform/travelling carriage) need be the same to the WiMAX network registry, also need system registry to IMS, promptly to passing through P-CSCF (Proxy CallSession Control Function, Proxy Call Session Control Function) registers to S-CSCF (ServingCall Session Control Function, service call conversation control function).First contact point of SS/MS and IMS is P-CSCF, comprises that register command stream and follow-up every other SIP signaling flow all must pass through P-CSCF.Therefore, before SS/MS is registered to IMS, must know the IP address of P-CSCF, could make that subsequent operation (as being registered to IMS) is continued.
Yet though mentioned the IP address that can utilize DHCP mechanism to obtain P-CSCF in 3GPP, therefore specific implementation, can't not obtain the IP address of P-CSCF yet in the WiMAX network.In addition, owing to may adopt multiple mode during terminal configuration self IP address in the IP network, and the IP address that can not obtain P-CSCF according to the mode difference of terminal configuration self IP address in the prior art.
Summary of the invention
The problem to be solved in the present invention provides a kind of method of obtaining IP address of agent call session control function, can not obtain the defective of the IP address of P-CSCF according to the different situations of terminal configuration in the IP network self IP address to overcome prior art.
In order to address the above problem, the invention provides a kind of method of obtaining IP address of agent call session control function, may further comprise the steps:
A, judge whether terminal adopts DHCP to dispose this IP address of terminal, if then change step B; Otherwise, change step C;
B, when disposing this IP address of terminal with DHCP, the option by DHCP obtains IP address of agent call session control function in conjunction with the domain name system agreement;
C, terminal are earlier by the IP of non-DHCP configuration address own, and the option with DHCP obtains IP address of agent call session control function in conjunction with the domain name system agreement again.
Step B further comprises:
B1, terminal are passed through dynamic host configuring protocol agent/relaying to the Dynamic Host Configuration Protocol server broadcast request message, to obtain Dynamic Host Configuration Protocol server IP address;
B2, available Dynamic Host Configuration Protocol server send response message by dynamic host configuring protocol agent/relaying to terminal, and response message carries this Dynamic Host Configuration Protocol server IP address;
B3, terminal send the request message that obtains this IP address of terminal and IP address of agent call session control function by dynamic host configuring protocol agent/relaying to Dynamic Host Configuration Protocol server, comprise in this message that the requirement Dynamic Host Configuration Protocol server provides IP address of agent call session control function tabulation and the option of domain name tabulation and the option of name server IP address list;
B4, Dynamic Host Configuration Protocol server send response message by dynamic host configuring protocol agent/relaying to terminal, and terminal obtains IP address of agent call session control function by this response message.
Response message comprises described in the step B4: this IP address of terminal and/or IP address of agent call session control function tabulation and/or full acceptance area list of file names and name server IP address list.
If response message only obtains the complete qualified domain name of Proxy Call Session Control Function among the step B4, then utilize the domain name system protocol analysis to go out IP address of agent call session control function.
Step B4 further comprises:
Terminal is selected one from the name server IP address list, send the domain name mapping request to this name server, and requiring the full acceptance area name analysis with Proxy Call Session Control Function is the IP address;
After this name server is received the request message of terminal, be the IP address, and make sound to terminal and to answer message the domain name mapping of Proxy Call Session Control Function.
Step C further comprises:
C1, terminal send broadcast by dynamic host configuring protocol agent/relaying to Dynamic Host Configuration Protocol server, and this message comprises the option that the requirement Dynamic Host Configuration Protocol server provides IP address of agent call session control function tabulation and domain name tabulation and name server IP address list;
C2, Dynamic Host Configuration Protocol server send response message by dynamic host configuring protocol agent/relaying to terminal, and terminal obtains IP address of agent call session control function by this response message.
The described response message of step C2 comprises: IP address of agent call session control function tabulation and/or full acceptance area list of file names and name server IP address list.
If obtain the complete qualified domain name of Proxy Call Session Control Function, need further obtain IP address of agent call session control function with domain name system mechanism by DHCP.
Step C2 further comprises:
Terminal is selected one from the name server IP address list, send the domain name mapping request to this name server, and requiring the full acceptance area name analysis with Proxy Call Session Control Function is the IP address;
After name server is received the analysis request message of terminal, be the IP address, and make sound to terminal and to answer message the domain name mapping of Proxy Call Session Control Function.
The invention also discloses a kind of system that obtains IP address of agent call session control function, comprising: terminal, Dynamic Host Configuration Protocol server and domain name system server;
When terminal adopts the IP of DHCP configuration address own, when disposing this IP address of terminal with Dynamic Host Configuration Protocol server, the option by Dynamic Host Configuration Protocol server obtains IP address of agent call session control function in conjunction with domain name system server;
When terminal adopts non-DHCP to dispose IP address own, terminal is earlier by the IP of non-DHCP configuration address own, and the option with dynamic host configuration server obtains IP address of agent call session control function in conjunction with domain name system server again.
The option of described dynamic host configuration server comprises IP address of agent call session control function tabulation and domain name tabulation and name server IP address list.
If can only obtain the domain name of Proxy Call Session Control Function, then resolve and obtain IP address of agent call session control function by domain name system server.
Also comprise dynamic host configuring protocol agent/relaying, terminal and Dynamic Host Configuration Protocol server are by dynamic host configuring protocol agent/trunking traffic.
Described terminal comprises: fixed terminal, roam terminals or portable terminal.
Compared with prior art, the present invention has the following advantages:
The present invention distinguishes two kinds of situations that adopt DHCP/non-DHCP configurating terminal IP address respectively, take different modes to obtain IP address of agent call session control function, and then, make signaling protocols such as the WiMAX terminal can be registered by P-CSCF and IMS, session invitation and the miscellaneous service that can further visit IMS.
Description of drawings
Fig. 1 is the method flow diagram that the present invention obtains IP address of agent call session control function;
Fig. 2 is the embodiment of the present invention in the WiMAX network of supporting IPv4/MIPv4;
Fig. 3 is the present invention another embodiment in the WiMAX network of supporting IPv4/MIPv4;
Fig. 4 is the embodiment of the present invention in the WiMAX network of supporting IPv6/MIPv6;
Fig. 5 is the present invention another embodiment in the WiMAX network of supporting IPv6/MIPv6.
Embodiment
The method flow that the present invention obtains IP address of agent call session control function may further comprise the steps as shown in Figure 1:
Step s101 judges whether terminal adopts DHCP to dispose this IP address of terminal, if then change step s102; Otherwise, change step s103.Wherein, the prerequisite of obtaining the IP address of P-CSCF is that IP-CAN carrying is set up and finished, and WiMAX is as a kind of IP-CAN, should be after pre-provisioned service flow be built up, and the IP address that utilizes pre-provisioned service flow to finish to obtain P-CSCF.
Step s102, when disposing this IP address of terminal with DHCP, the option by DHCP obtains IP address of agent call session control function in conjunction with the domain name system agreement.
Wherein, obtaining IP address of agent call session control function when disposing this IP address of terminal with DHCP further comprises: terminal sends to Dynamic Host Configuration Protocol server by dynamic host configuring protocol agent and obtains the IP address of agent call session control function request message, comprises in this message that the requirement server provides the option of IP address of agent call session control function tabulation and domain name tabulation and name server IP address list; Dynamic Host Configuration Protocol server sends response message by dynamic host configuring protocol agent to terminal, and this message is carried IP address of agent call session control function tabulation or full acceptance area list of file names and name server IP address list.
If what obtain by DHCP is complete qualified domain name, need further to obtain IP address of agent call session control function with domain name system mechanism, comprising: terminal sends the request message that obtains the domain name system server IP address list by dynamic host configuring protocol agent to Dynamic Host Configuration Protocol server; Dynamic Host Configuration Protocol server sends response message by dynamic host configuring protocol agent to terminal, comprises the domain name system server IP address list in this message; Terminal is resolved by domain name system and is obtained IP address of agent call session control function.
Step s103, after the IP address of terminal elder generation by non-DHCP configuration itself, the option with DHCP obtains IP address of agent call session control function in conjunction with the domain name system agreement again.
Wherein step s103 further comprises: terminal sends broadcast by dynamic host configuring protocol agent to all Dynamic Host Configuration Protocol server, requires Dynamic Host Configuration Protocol server that agent call interactive function IP address and domain name and dns server IP address are provided in the mode of option; Available Dynamic Host Configuration Protocol server sends response message by dynamic host configuring protocol agent to terminal, comprises tabulation of agent call interactive function IP address list and domain name and dns server IP address list in this message; If what terminal was obtained is agent call interactive function IP address, then this step is finished, if what obtain is the complete qualified domain name of agent call interactive function, then separate out DHCP IP address by the domain name system MECHANISM SOLUTION, further comprise: terminal sends the request message that obtains the domain name system server IP address list by dynamic host configuring protocol agent to Dynamic Host Configuration Protocol server; Dynamic Host Configuration Protocol server sends response message by dynamic host configuring protocol agent to terminal, comprises the domain name system server IP address list in this message; Terminal is resolved by domain name system and is obtained IP address of agent call session control function.
Below in conjunction with specific embodiment above-mentioned technical characterictic is described:
One embodiment of the invention is in the WiMAX network of supporting IPv4/MIPv4, and when terminal is the mobile subscriber of fixed-line subscriber, nomadic user or employing PMIP, can be by sip server domain name and the sip server IPv4 address list option of DHCPv4, when obtaining the IP address by DHCPv4, terminal obtains the IP address of P-CSCF, wherein, sip server IPv4 address list, domain name tabulation are the calls of standard of comparison among the DHCP, in fact are exactly Proxy Call Session Control Function IPv4 address list, domain name tabulation.Idiographic flow may further comprise the steps as shown in Figure 2:
Step s201, terminal (SS/MS) sends broadcast DHCPv4DISCOVER to DHCP proxy/relaying.
Step s202, DHCP proxy/relaying promptly has the gateway of DHCP proxy/relay function among the ASN, transmit this DHCPv4 DISCOVER message to Dynamic Host Configuration Protocol server.
After step s203, Dynamic Host Configuration Protocol server receive DHCPv4 DICOVER message, send DHCPv4 OFFER message, may comprise one or more Dynamic Host Configuration Protocol server IPv4 address in this message to DHCP proxy/relaying.
Step s204, DHCP proxy/relaying is handed to terminal with this DHCPv4 OFFER message, and this terminal is chosen a suitable Dynamic Host Configuration Protocol server IPv4 address.
Step s205, terminal sends DHCPv4 REQUEST message to DHCP proxy/relaying, inform the Dynamic Host Configuration Protocol server IPv4 address of itself having selected, and require the additional IP address/domain name of P-CSCF and the address list of dns server of providing of Dynamic Host Configuration Protocol server in the mode of option.
Step s206, DHCP proxy/relaying transmit this DHCPv4 REQUEST message and give Dynamic Host Configuration Protocol server.
Step s207, after Dynamic Host Configuration Protocol server is received this DHCPv4 REQUEST message, reply DHCP proxy/relaying with DHCPACK message, the IP address list of the IP of this message carried terminal address own, P-CSCF is or/and the IP address list of domain name tabulation and dns server.
Step s208, DHCP proxy/relaying is handed to terminal with DHCPv4 ACK message, and so far, terminal or/and domain name is tabulated, and has obtained the address list of dns server by the IP address list of IP address, P-CSCF of resolving this message and obtaining terminal itself.
If terminal to the IP address that step s208 has obtained P-CSCF, is then omitted step s209 and step s210 by step s201; If terminal to domain name and dns server IP address that step s208 has only obtained P-CSCF, is then changeed step s209 and step s210 by step s201.
Step s209, terminal sends DNS Protocol query messages DNS QUERY message to dns server, comprises FQDN (Full Qualified Domain Name, complete qualified domain name) in this message, to obtain corresponding IP address.
Step s210, dns server sends response message DNS RESPONSE message to terminal, comprises the IP address of P-CSCF in this message.
In this example, IP address and/or the domain name of obtaining P-CSCF by DHCPv4 INFORM/ACK after IP configuration is finished among the step s205 also are feasible, but obviously IP configuration and the IP address that obtains P-CSCF are realized optimizing more with same DHCP flow process and reasonable.
When terminal during, IP configuration and P-CSCF can not be found integrate realization among the present invention, need dispose the IP address that obtain P-CSCF after finishing at IP for the fixed terminal of the portable terminal that uses CMIP or static allocation IP.Because this moment, terminal had the IP address, the domain name that should obtain P-CSCF by DHCPv4INFORM/ACK message is or/and the IP address, and idiographic flow may further comprise the steps as shown in Figure 3:
Step s301, terminal is to DHCP proxy/repeat broadcast DHCPv4 INFORM message, requires Dynamic Host Configuration Protocol server to provide the IPv4 address of P-CSCF or/and domain name and dns server IP v4 address in the mode of option.
Step s302, DHCP proxy/relaying is given Dynamic Host Configuration Protocol server with this forwards.
Step s303, Dynamic Host Configuration Protocol server returns DHCPv4 ACK message to DHCP proxy/relaying, and the IPv4 address list that has P-CSCF in this message is or/and domain name tabulation, and comprises the tabulation of dns server domain name addresses.
Step s304, DHCP proxy/relaying is given terminal with this forwards.
If terminal to the IP address that step s304 has obtained P-CSCF, is then omitted step s305 and step s306 by step s301; If terminal has only obtained the domain name of P-CSCF and the IP address of dns server by step s301 to step s304, then change step s305 and step s306.
Step s305, terminal sends DNS Protocol query messages DNS QUERY to dns server, to obtain corresponding IP address.
Step s306, dns server sends DNS RESPONSE response message to terminal, comprises the IP address of P-CSCF in this message.
When the present invention is applied to support the WiMAX network of IPv6/MIPv6,, should supports the static address distribution and have state to dispose automatically for fixed terminal; To roam terminals and portable terminal, state dynamic address allocation and stateless dynamic address allocation should have been supported.There is the state dynamic address allocation to obtain IPv 6 terminal address by DHCPv6 in fact exactly.
For fixed terminal, roam terminals or portable terminal, all must support to have the automatic distributing IP v6 of state address.Because for the location sip proxy server has defined two DHCPv6 options (being defined in RFC3319) specially, when terminal initial inserts the WiMAX network, need obtain the IPv6 address by DHCPv6, therefore, in conjunction with these two particular options of DHCPv6, can realize IP configuration and the IP address that obtains P-CSCF simultaneously.Detailed process may further comprise the steps as shown in Figure 4:
Step s401, terminal sends DHCPv6 SOLICIT multicast message to DHCP proxy/relaying, is used for seeking available Dynamic Host Configuration Protocol server.
Step s402, DHCP proxy/relaying is transmitted this DHCPv6 SOLICIT message to Dynamic Host Configuration Protocol server.
Step s403, all can be handled the Dynamic Host Configuration Protocol server of DHCPv6 SOLICIT and reply DHCP proxy/relaying with DHCPv6ADVERTISE message.
Step s404, DHCP proxy/relaying is handed to terminal with this DHCPv6 ADVERTISE message.
Step s405, terminal is selected a Dynamic Host Configuration Protocol server, sends DHCPv6REQUEST message to DHCP proxy/relaying, and requires the additional IP address of P-CSCF or the IPv6 address of domain name and dns server of providing of Dynamic Host Configuration Protocol server in the mode of option.
Step s406, DHCP proxy/relaying is transmitted this DHCPv6 REQUEST message to Dynamic Host Configuration Protocol server.
Step s407, after Dynamic Host Configuration Protocol server is received DHCPv6 REQUEST message, reply DHCPv6 REPLY message to DHCP proxy/relaying, the IP address of this message carried terminal and the IP address list of P-CSCF are or/and the IP address list of domain name tabulation and dns server.
Step s408, DHCP proxy/relaying is transmitted this DHCPv6 REPLY message to terminal.
If terminal to the IP address that step s408 has obtained P-CSCF, is then omitted step s409 and step s410 by step s401; If terminal has only obtained the domain name of P-CSCF and the IP address of dns server by step s401 to step s408, then change step s409 and step s410.
Step s409, terminal sends DNS Protocol query messages DNS QUERY message to dns server and obtains corresponding IP address.
Step s410, dns server sends DNS RESPONSE response message to terminal, comprises the IP address of P-CSCF in the message.
In this example, IP address and/or the domain name of obtaining P-CSCF by DHCP REQUEST/REPLY after IP configuration is finished also are feasible, but obviously IP configuration and the IP address that obtains P-CSCF are realized optimizing more with reasonable with same DHCP flow process.
Terminal adopts the static ip address configuration and uses the situation of the automatic distributing IP v6 of stateless address, and terminal is not to obtain the IP address by DHCPv6, the IP address that obtains P-CSCF after needing the IP configuration to finish, and concrete steps are described as shown in Figure 5, may further comprise the steps:
Step s501, when pre-provisioned service flow foundation is finished, and after terminal is finished dhcp server ip address configuration and is finished, terminal requires Dynamic Host Configuration Protocol server to provide the IPv6 address of P-CSCF or/and the IPv6 address of domain name and dns server to DHCP proxy/relaying multicast DHCPv6INFORMATION-REQUEST message.
Step s502, DHCP proxy/relaying is transmitted this INFORMATION-REQUEST message to Dynamic Host Configuration Protocol server.
Step s503, Dynamic Host Configuration Protocol server returns DHCPv6 REPLY message to DHCP proxy/relaying, and the IPv6 address list that has P-CSCF in this message is or/and the IPv6 address list of domain name tabulation and dns server.
Step s504, DHCP proxy/in transmit this message to terminal.
If terminal to the IP address that step s504 has obtained P-CSCF, is then omitted step s505 and step s506 by step s501; If terminal has only obtained the domain name of P-CSCF and the IP address of dns server by step s501 to step s504, then change step s505 and step s506.
Step s505, terminal sends DNS Protocol query messages DNS QUERY to dns server, to obtain corresponding IP address.
Step s506, dns server sends response message DNS RESPONSE to terminal, comprises the IP address of P-CSCF in this message.
The present invention also provides a kind of system that obtains IP address of agent call session control function, comprising: terminal, Dynamic Host Configuration Protocol server and domain name system server; When terminal adopts DHCP to dispose the IP address of itself, when disposing this IP address of terminal, by the option of DHCP and the IP address that obtains Proxy Call Session Control Function in conjunction with domain name system server with DHCP; When terminal adopts non-DHCP to dispose the IP address of itself, after the IP address of terminal elder generation by non-DHCP configuration itself, again with the option of dynamic host configuration server and the IP address that obtains Proxy Call Session Control Function in conjunction with domain name system server.
The option of the dynamic host configuration server of wherein, using comprises IP address list and the domain name tabulation and the name server IP address list of Proxy Call Session Control Function.When the option by dynamic host configuration server only obtains the complete qualified domain name of Proxy Call Session Control Function, then parse the IP address of Proxy Call Session Control Function by domain name system server.
In addition, also comprise dynamic host configuring protocol agent/relaying in the native system, be used for communicating by letter between terminal and the Dynamic Host Configuration Protocol server.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1, a kind of method of obtaining IP address of agent call session control function is characterized in that, may further comprise the steps:
A, judge whether terminal adopts DHCP to dispose this IP address of terminal, if then change step B; Otherwise, change step C;
B, when disposing this IP address of terminal with DHCP, the option by DHCP obtains IP address of agent call session control function in conjunction with the domain name system agreement;
C, terminal are earlier by the IP of non-DHCP configuration address own, and the option with DHCP obtains IP address of agent call session control function in conjunction with the domain name system agreement again.
2, obtain the method for IP address of agent call session control function according to claim 1, it is characterized in that, step B further comprises:
B1, terminal are passed through dynamic host configuring protocol agent/relaying to the Dynamic Host Configuration Protocol server broadcast request message, to obtain Dynamic Host Configuration Protocol server IP address;
B2, available Dynamic Host Configuration Protocol server send response message by dynamic host configuring protocol agent/relaying to terminal, and response message carries this Dynamic Host Configuration Protocol server IP address;
B3, terminal send the request message that obtains this IP address of terminal and IP address of agent call session control function by dynamic host configuring protocol agent/relaying to Dynamic Host Configuration Protocol server, comprise in this message that the requirement Dynamic Host Configuration Protocol server provides IP address of agent call session control function tabulation and the option of domain name tabulation and the option of name server IP address list;
B4, Dynamic Host Configuration Protocol server send response message by dynamic host configuring protocol agent/relaying to terminal, and terminal obtains IP address of agent call session control function by this response message.
3, as obtaining the method for IP address of agent call session control function as described in the claim 2, it is characterized in that response message comprises described in the step B4: this IP address of terminal and/or IP address of agent call session control function tabulation and/or full acceptance area list of file names and name server IP address list.
4, as obtaining the method for IP address of agent call session control function as described in the claim 3, it is characterized in that, if response message only obtains the complete qualified domain name of Proxy Call Session Control Function among the step B4, then utilize the domain name system protocol analysis to go out IP address of agent call session control function.
5, as obtaining the method for IP address of agent call session control function as described in the claim 4, it is characterized in that step B4 further comprises:
Terminal is selected one from the name server IP address list, send the domain name mapping request to this name server, and requiring the full acceptance area name analysis with Proxy Call Session Control Function is the IP address;
After this name server is received the request message of terminal, be the IP address, and make sound to terminal and to answer message the domain name mapping of Proxy Call Session Control Function.
6, obtain the method for IP address of agent call session control function according to claim 1, it is characterized in that, step C further comprises:
C1, terminal send broadcast by dynamic host configuring protocol agent/relaying to Dynamic Host Configuration Protocol server, and this message comprises the option that the requirement Dynamic Host Configuration Protocol server provides IP address of agent call session control function tabulation and domain name tabulation and name server IP address list;
C2, Dynamic Host Configuration Protocol server send response message by dynamic host configuring protocol agent/relaying to terminal, and terminal obtains IP address of agent call session control function by this response message.
7, as obtaining the method for IP address of agent call session control function as described in the claim 6, it is characterized in that the described response message of step C2 comprises: IP address of agent call session control function tabulation and/or full acceptance area list of file names and name server IP address list.
8, as obtaining the method for IP address of agent call session control function as described in the claim 7, it is characterized in that, if obtain the complete qualified domain name of Proxy Call Session Control Function, need further obtain IP address of agent call session control function with domain name system mechanism by DHCP.
9, as obtaining the method for IP address of agent call session control function as described in the claim 8, it is characterized in that step C2 further comprises:
Terminal is selected one from the name server IP address list, send the domain name mapping request to this name server, and requiring the full acceptance area name analysis with Proxy Call Session Control Function is the IP address;
After name server is received the analysis request message of terminal, be the IP address, and make sound to terminal and to answer message the domain name mapping of Proxy Call Session Control Function.
10, a kind of system that obtains IP address of agent call session control function is characterized in that, comprising: terminal, Dynamic Host Configuration Protocol server and domain name system server;
When terminal adopts the IP of DHCP configuration address own, when disposing this IP address of terminal with Dynamic Host Configuration Protocol server, the option by Dynamic Host Configuration Protocol server obtains IP address of agent call session control function in conjunction with domain name system server;
When terminal adopts non-DHCP to dispose IP address own, terminal is earlier by the IP of non-DHCP configuration address own, and the option with dynamic host configuration server obtains IP address of agent call session control function in conjunction with domain name system server again.
11, as obtaining the system of IP address of agent call session control function as described in the claim 10, it is characterized in that the option of described dynamic host configuration server comprises IP address of agent call session control function tabulation and domain name tabulation and name server IP address list.
12, as obtaining the system of IP address of agent call session control function as described in the claim 10, it is characterized in that, if can only obtain the domain name of Proxy Call Session Control Function, then resolve and obtain IP address of agent call session control function by domain name system server.
13, as obtaining the system of IP address of agent call session control function as described in the claim 10, it is characterized in that, also comprise dynamic host configuring protocol agent/relaying, terminal and Dynamic Host Configuration Protocol server are by dynamic host configuring protocol agent/trunking traffic.
14, as obtaining the method for IP address of agent call session control function in the claim 10 to 13 as described in each, it is characterized in that described terminal comprises: fixed terminal, roam terminals or portable terminal.
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| WO2009033379A1 (en) * | 2007-09-13 | 2009-03-19 | Zte Corporation | A method and system for obtaining an address of the p-cscf |
| WO2009052762A1 (en) * | 2007-10-19 | 2009-04-30 | Huawei Technologies Co., Ltd. | Broadcast service (bc) improving method, device and system |
| WO2009056010A1 (en) * | 2007-11-01 | 2009-05-07 | Zte Corporation | Method of obtaining proxy call session control function address while roaming |
| CN101415149B (en) * | 2007-10-19 | 2010-12-08 | 华为技术有限公司 | Method and apparatus for improving BC business |
| CN102821172A (en) * | 2012-09-10 | 2012-12-12 | 华为技术有限公司 | Method, equipment and system for obtaining address of SIP (session initiation protocol) register server |
| CN105471696A (en) * | 2014-09-11 | 2016-04-06 | 中兴通讯股份有限公司 | FQDN obtaining method, terminal, server and dual-stack tunnel establishing system |
| CN105610991A (en) * | 2016-03-31 | 2016-05-25 | 北京网瑞达科技有限公司 | Load balancing method of recursion and analysis DNS (Domain Name Server) under DHCP (Dynamic Host Configuration Protocol) environment |
| WO2019223167A1 (en) * | 2018-05-21 | 2019-11-28 | 平安科技（深圳）有限公司 | Method, apparatus and device for obtaining sip server address and storage medium |
| CN111917681A (en) * | 2019-05-07 | 2020-11-10 | 中国移动通信有限公司研究院 | Management method and equipment of proxy call session control function |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009033379A1 (en) * | 2007-09-13 | 2009-03-19 | Zte Corporation | A method and system for obtaining an address of the p-cscf |
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