CN102905201A - Passive optical network session service controlling method and optical line terminal - Google Patents
Passive optical network session service controlling method and optical line terminal Download PDFInfo
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Abstract
The invention provides a passive optical network session service controlling method and an optical line terminal. The passive optical network session service controlling method comprises the following steps that: the optical line terminal receives a session call request which comprises a called terminal equipment identifier and is transmitted by calling terminal equipment; the optical line terminal judges whether the called terminal equipment is subordinate terminal equipment of the optical line terminal according to the called terminal equipment identifier; if the called terminal equipment is the subordinate terminal equipment of the optical line terminal, the optical line terminal transmits the session call request to the called terminal equipment; the optical line terminal receives a call response message fed back by the called terminal equipment; and the optical line terminal establishes a media stream transmitting channel between the calling terminal equipment and the called terminal equipment. By the method and the optical line terminal, session service backup can be provided for a passive optical network, and the load of a core network is reduced.
Description
Technical field
The present invention relates to the communication technology, relate in particular to a kind of session service control method and optical line terminal of EPON.
Background technology
PON(Passive Optical Network, EPON) is a kind of Optical Access Network of point-to-multipoint, its local side apparatus OLT(Optical Line Terminal, optical line terminal) and ustomer premises access equipment ONU(Optical Network Unit, only there is passive device in the optical distribution optical node).
The PON network acts on calls out the principle that is separated with carrying, by at the built-in IAD(Integrated Access of ONU Device, integrated access equipment), the access of the session services such as normal speech, visual telephone only is provided, and Service control need to be by its upper strata IMS(IP MultimediaSubsystem, IP Multimedia System) or soft switchcall server finish.When terminal equipment carries out the session service access, all need by core net it to be carried out Service control.
But in case the network on OLT upper strata breaks down, all session services of its lower band all will interrupt; And the session service between any two terminal equipments all needs to carry out Service control by core net, has also caused the larger load of core net.
Summary of the invention
The invention provides a kind of session service control method and optical line terminal of EPON, for EPON provides the session service backup, and reduce the core net load.
The invention provides a kind of session service control method of EPON, comprising:
Optical line terminal receives the conference call request that comprises the terminal called device identification that calling terminal equipment sends;
Described optical line terminal is according to described terminal called device identification, determines whether described optical line terminal subordinate's terminal equipment of described terminal called equipment;
If then described optical line terminal sends to described terminal called equipment with described conference call request;
Described optical line terminal receives the call message of described terminal called equipment feedback;
Described optical line terminal is set up the media flow transmission passage between described calling terminal equipment and the terminal called equipment.
The present invention also provides a kind of optical line terminal, comprising:
Receiver module is used for receiving the conference call request that comprises the terminal called device identification that calling terminal equipment sends;
Determination module is used for according to described terminal called device identification, determines whether described optical line terminal subordinate's terminal equipment of described terminal called equipment;
Call processing module if be used for, then sends to described terminal called equipment with described conference call request;
The Path Setup module is used for receiving the call message that described terminal called equipment feeds back, and sets up the media flow transmission passage between described calling terminal equipment and the terminal called equipment.
Session service control method and the optical line terminal of EPON of the present invention, judge by OLT whether calling terminal equipment and terminal called equipment are same OLT subordinate's terminal equipment and are to set up service channel between same OLT subordinate's the terminal equipment, realized between same OLT subordinate's terminal equipment, controlling the function of carrying out inner session without core net, solve among the PON terminal equipment and carried out session service and all need core net to control, caused the excessive defective of core net load.
Description of drawings
Fig. 1 is the flow chart of the session service control method embodiment one of EPON of the present invention;
Fig. 2 is the flow chart of the session service control method embodiment two of EPON of the present invention;
Fig. 3 is the flow chart of the session service control method embodiment three of EPON of the present invention;
Fig. 4 is the flow chart of the session service control method embodiment four of EPON of the present invention;
Fig. 5 is the flow chart of the session service control method embodiment five of EPON of the present invention;
Fig. 6 is the structure chart of optical line terminal embodiment one of the present invention;
Fig. 7 is the structure chart of optical line terminal embodiment two of the present invention;
Fig. 8 is the structure chart of optical line terminal embodiment four of the present invention.
Embodiment
Fig. 1 is the flow chart of the session service control method embodiment one of EPON of the present invention, and as shown in Figure 1, the method for present embodiment comprises:
Step S 101, and optical line terminal receives the conference call request that comprises the terminal called device identification that calling terminal equipment sends.
Particularly, an optical line terminal OLT may be with down several ustomer premises access equipments ONU, and each ONU may carry out session service for several terminal equipments by its built-in IAD.When one terminal equipment need to carry out session service with another terminal equipment, at first send the conference call request by calling terminal equipment to OLT, comprise the terminal called device identification in this conference call request.
Step S102, optical line terminal be according to the terminal called device identification, determines whether this optical line terminal subordinate's terminal equipment of terminal called equipment.
Particularly, preserve the Terminal Equipment Identifier information list among the OLT, after OLT receives the conference call request of calling terminal equipment transmission, according to the terminal called device identification of carrying in this conference call request, judge whether this terminal called device identification is recorded in this list of identification information, thereby determine whether this OLT subordinate's terminal equipment of this terminal called equipment.
Step S103 is if then optical line terminal sends to terminal called equipment with the session call request.
Particularly, if OLT judges that terminal called equipment is this OLT subordinate's terminal equipment, then OLT is transmitted to this terminal called equipment with the conference call request that this calling terminal equipment sends, and transmits and need not to carry out message by core net.
Step S104, optical line terminal receives the call message of terminal called equipment feedback.
Particularly, after this terminal called equipment is received the conference call request of OLT forwarding, confirm to accept this call request, send call message to OLT.
Step S105, optical line terminal set up the media flow transmission passage between calling terminal equipment and the terminal called equipment.
Particularly, OLT is transmitted to calling terminal equipment with the call message that terminal called equipment sends, the terminal called equipment of notice calling terminal device call has been confirmed call request, and set up a media flow transmission passage, for the media flow transmission of calling terminal equipment and terminal called equipment session business, calling terminal equipment carries out session service with terminal called equipment by this passage and communicates by letter.
Present embodiment, judge by OLT whether calling terminal equipment and terminal called equipment are same OLT subordinate's terminal equipment and are to set up service channel between same OLT subordinate's the terminal equipment, realized between same OLT subordinate's terminal equipment, controlling the function of carrying out inner session without core net, solve among the PON terminal equipment and carried out session service and all need core net to control, caused the excessive defective of core net load.
Fig. 2 is the flow chart of the session service control method embodiment two of EPON of the present invention, and present embodiment can carry out before said method embodiment one, and as shown in Figure 2, the method for present embodiment comprises:
Step S201, the login request message that the optical line terminal receiving terminal apparatus sends.
Particularly, terminal equipment needs after core network is registered, and core net could be carried out related service communication by authorization terminal equipment.Terminal equipment needs to send login request message to OLT first when start.All terminal equipments of an OLT subordinate all need to send login request message to OLT when start.
Step S202, optical line terminal sends to equipment of the core network with login request message.
Particularly, OLT is transmitted to equipment of the core network with it after receiving the login request message of terminal equipment transmission.This equipment of the core network can be used to finishing CSCF(Call Session Control Function, CSCF) or the relevant device of softswitch functions.
Step S203, optical line terminal receives the response message that succeeds in registration of equipment of the core network feedback.
Particularly, equipment of the core network is registered terminal equipment on core net after receiving the login request message of terminal equipment transmission, and after succeeding in registration, the response message that will succeed in registration sends to OLT.
Step S204, the address information that the device identification of optical line terminal storage terminal is corresponding.
Particularly, OLT receives that terminal equipment that equipment of the core network sends succeeds in registration behind the response message, the response message notification terminal equipment that will succeed in registration, and the relative address information of terminal equipment stored.
For instance, can preserve the address information tabulation among the OLT, OLT address information corresponding stored that the Terminal Equipment Identifier that succeeds in registration is corresponding is in this tabulation, so that follow-up can whether being stored in this address information tabulation according to address information corresponding to terminal called sign of this OLT determines whether terminal called equipment belongs to an OLT with calling terminal equipment.
Particularly, the address information of above-mentioned terminal equipment can comprise: IP address and port numbers, SIP(Session Initiation Protocol, Session initiation Protocol), URL and port numbers, call number sign.
Present embodiment is by terminal equipment address information in OLT internal record terminal equipment in the registers kernel network process, when making terminal equipment carry out session service, OLT can directly set up communication port between calling terminal equipment and the terminal called equipment according to the address information of record, solves that terminal equipment carries out the defective that session service all needs core net to control among the PON.
Fig. 3 is the flow chart of the session service control method embodiment three of EPON of the present invention, and present embodiment is the preferred embodiment of said method embodiment two, and as shown in Figure 3, the method for present embodiment comprises:
Step S301, terminal equipment sends login request message to optical line terminal.
Particularly, terminal equipment can be calling terminal equipment and terminal called equipment, and this login request message is only finished the function of request registration, does not comprise terminal authentication information.
Step S302, optical line terminal is transmitted to equipment of the core network with login request message.
Step S303, equipment of the core network send to optical line terminal and require terminal authentication message.
Particularly, core net is registered if agree this terminal equipment after receiving the login request message of OLT forwarding, then sends message to OLT and requires terminal equipment to send authentication information.
Step S304, optical line terminal will require terminal authentication message to be transmitted to terminal equipment.
Step S305, terminal equipment send the Layer 2 registration request message of tape terminal authentication to optical line terminal.
Particularly, terminal equipment receives that OLT transmits require terminal authentication message after, confirm that core net agrees registration request, the Layer 2 registration request message with Certificate Authority is sent to OLT.
Step S306, optical line terminal is transmitted to equipment of the core network with the Layer 2 registration request message of tape terminal authentication.
Step S307, equipment of the core network sends the message that succeeds in registration to optical line terminal.
Particularly, after equipment of the core network is received the Layer 2 registration request message of the tape terminal authentication that OLT transmits, if confirming the authentication request message of this terminal equipment is legitimate request, then this terminal equipment is by authentication, the corresponding information of terminal equipment is recorded in the core net, finish the registration of terminal equipment, send the message that succeeds in registration to OLT.
Step S308, optical line terminal is transmitted to terminal equipment with login request message.
Particularly, after OLT receives the message that succeeds in registration of equipment of the core network transmission, in the terminal equipment address information tabulation of address information recording in OLT with this terminal equipment, determine that this terminal equipment is this OLT subordinate's terminal equipment.And the message that will succeed in registration is transmitted to terminal equipment, finishes registration process.
Fig. 4 is the flow chart of the session service control method embodiment four of EPON of the present invention, and as shown in Figure 4, the method for present embodiment comprises:
Step S401, optical line terminal receives the conference call request that comprises the terminal called device identification that calling terminal equipment sends.
Step S402, optical line terminal be according to the terminal called device identification, determines whether this optical line terminal subordinate's terminal equipment of terminal called equipment.
Step S403, if terminal called equipment is not this optical line terminal subordinate's terminal equipment, optical line terminal sends to equipment of the core network with the session call request, so that equipment of the core network is called out control to the session between calling terminal equipment and the terminal called equipment.
Particularly, if OLT judges that terminal called equipment is not this OLT subordinate's terminal equipment, then OLT is transmitted to equipment of the core network with the conference call request that this calling terminal equipment sends, equipment of the core network carries out addressing by the terminal called device identification of carrying in the conference call request, after searching out terminal called equipment, between calling terminal equipment and terminal called equipment, set up communication port.
Present embodiment, when calling terminal equipment and terminal called equipment are not same OLT subordinate's terminal equipment, by the conversation request message of OLT forwarding calling terminal equipment, by equipment of the core network the session of calling terminal equipment and terminal called equipment is controlled.
Fig. 5 is the flow chart of the session service control method embodiment five of EPON of the present invention, and as shown in Figure 5, the method for present embodiment comprises:
Step S500 arranges the session control pattern of optical line terminal.
Particularly, in OLT, pre-set the session control pattern according to application scenarios.OLT provides three kinds of mode of operations to select, and is respectively: (1) closes the inner conversation control function of OLT; (2) open the inner conversation control function of OLT, and preferential PON intercommunication; (3) open the inner conversation control function of OLT, and preferential PON PERCOM peripheral communication.The inside conversation control function of above-mentioned OLT is: by equipment of the core network control, directly session service is not controlled and set up communication port by OLT, carry out session communication between the terminal equipment, be i.e. the technical scheme that provides of embodiment of the method one shown in Figure 1.Above-mentioned pattern (1) is closed the inner conversation control function of OLT, when under the OLT with terminal equipment when carrying out session service, OLT only carries out the forwarding of message, and all control procedures are finished by equipment of the core network.This pattern is used for using when core net need to be carried out such as controls such as chargings to the session of terminal equipment.Above-mentioned pattern (2) is opened the inner conversation control function of OLT, and preferential PON intercommunication, when under the terminal equipment OLT with terminal equipment when carrying out session service, the conference call request that OLT all sends caller equipment is first judged, if terminal called equipment is subordinate's equipment of this OLT, then this session service is controlled by OLT, and information is not sent to equipment of the core network.This pattern is used for when an OLT subordinate's terminal equipment is the terminal equipment of same group user, uses when core net allows to carry out inner session between this user's the terminal equipment.Above-mentioned pattern (3) is opened the inner conversation control function of OLT, and preferential PON PERCOM peripheral communication, when under the terminal equipment OLT with terminal equipment when carrying out session service, OLT judges first whether equipment of the core network breaks down, if do not break down, then carry out session control by equipment of the core network, OLT only carries out the forwarding of message, if equipment of the core network breaks down, then this session service is controlled by OLT.When being used to PON to carry out the session service backup, this pattern uses.
Step S501, optical line terminal receives the conference call request that comprises the terminal called device identification that calling terminal equipment sends.
Step S502 judges the current session control pattern of optical line terminal.
Particularly, OLT judges the session control pattern of Set For Current after receiving the conference call request that calling terminal equipment sends, the subsequent step that carries out according to the session control model selection.If the session control pattern is (1), then execution in step S503; If the session control pattern is (2), then execution in step S504; If the session control pattern is (3), then execution in step S508.
Step S503, optical line terminal sends to equipment of the core network with the session call request, so that equipment of the core network is called out control to the session between calling terminal equipment and the terminal called equipment.
Step S504, optical line terminal determine whether this optical line terminal subordinate's terminal equipment of terminal called equipment.
If terminal called equipment is this optical line terminal subordinate's terminal equipment, then execution in step S505; If terminal called equipment is not this optical line terminal subordinate's terminal equipment, then execution in step S503.
Step S505, optical line terminal sends to terminal called equipment with the session call request.
Step S506, optical line terminal receives the call message of terminal called equipment feedback.
Step S507, optical line terminal set up the media flow transmission passage between calling terminal equipment and the terminal called equipment.
Step S508 judges whether equipment of the core network breaks down.
Particularly, when the session control pattern that arranges among the OLT was (3), OLT judged first whether the equipment of the core network on upper strata breaks down, the then execution in step S503 if equipment of the core network does not break down, the then execution in step S509 if equipment of the core network breaks down.
When specific implementation, OLT determines the method that core net breaks down, and can comprise: OLT determines that by the communications status of monitoring core net core net breaks down; Perhaps, OLT determines that by do not receive the conference call response message of equipment of the core network feedback in Preset Time core net breaks down.
Step S509, optical line terminal determine whether this optical line terminal subordinate's terminal equipment of terminal called equipment.
Particularly, if terminal called equipment is this optical line terminal subordinate's terminal equipment, execution in step S505 then; If terminal called equipment is not this optical line terminal subordinate's terminal equipment, then execution in step S510.
Step S510 sends conversation failure message to calling terminal equipment.
Particularly, if terminal called equipment is not this optical line terminal subordinate's terminal equipment, then can't carry out inner session, and because fault has also appearred at this moment in core net, therefore calling terminal equipment can't be finished session with terminal called equipment, and OLT will send conversation failure message to calling terminal equipment.
Present embodiment, by three kinds of session control patterns of OLT are provided, for the PON that uses provides different solutions, and fault verification mechanism and the back mechanism of core net are provided under different scenes, realize the multi-business diversification of PON network, improved the reliability of session service.
Further, among the OLT that the various embodiments described above of the present invention are described, can also comprise: the IP address transition of session service, NAT(Network Address Translation, network address translation)/fire compartment wall the function such as penetrates.
Among the OLT that Fig. 1 to Fig. 5 embodiment of the present invention describes, described terminal equipment can comprise: the IAD that ONU is internal or external; Perhaps, under the ONU with IP phone, mediaphone or the computer of software terminal is housed.
The session service of describing among Fig. 1 to Fig. 5 embodiment of the present invention can comprise: plain old telephone service, mediaphone business and supplementary service, unified Centrex(Centralized Exchange, Centrex), the business such as multimedia color ring back tone, fusion one number service, multimedia conferencing, HD video meeting, fax, message.
The passive optical network PON that Fig. 1 to Fig. 5 embodiment of the present invention relates to can comprise: GPON(Gigabit PON, gigabit passive optical network), EPON(Ethernet PON, EPON based on Ethernet), 10G PON(10 gigabit passive optical network), NGPON(Next GenerationPON, next-generation passive optical network), WDM PON(Wavelength DivisionMultiplexing PON, Wave division multiplexing passive optical network) etc.
Fig. 6 is the structure chart of optical line terminal embodiment one of the present invention, and as shown in Figure 6, the optical line terminal of present embodiment comprises:
Receiver module 61 is used for receiving the conference call request that comprises the terminal called device identification that calling terminal equipment sends;
Call processing module 63 if be used for, then sends to terminal called equipment with the session call request;
The optical line terminal of present embodiment can be for the technical scheme of the session service control method embodiment one that carries out EPON shown in Figure 1, and its realization principle and technique effect are similar, repeat no more herein.
Fig. 7 is the structure chart of optical line terminal embodiment two of the present invention, and as shown in Figure 7, the optical line terminal of present embodiment further, also comprises on the basis of optical line terminal structure shown in Figure 6:
Trade mark agency module 71 is used for the login request message that receiving terminal apparatus sends; Login request message is sent to equipment of the core network; Receive the response message that succeeds in registration of equipment of the core network feedback; The address information that the storage terminal device identification is corresponding;
The optical line terminal of present embodiment can be for the technical scheme of the session service control method embodiment two that carries out EPON shown in Figure 2, and its realization principle and technique effect are similar, repeat no more herein.
The structural representation of optical line terminal embodiment three of the present invention can be referring to shown in Figure 6, in optical line terminal embodiment three of the present invention, call processing module 63, if also being used for terminal called equipment is not this optical line terminal subordinate's terminal equipment, the session call request is sent to equipment of the core network, so that equipment of the core network is called out control to the session between calling terminal equipment and the terminal called equipment.
The optical line terminal of present embodiment can be for the technical scheme of the session service control method embodiment four that carries out EPON shown in Figure 4, and its realization principle and technique effect are similar, repeat no more herein.
Fig. 8 is the structure chart of optical line terminal embodiment four of the present invention, and as shown in Figure 8, the optical line terminal of present embodiment further, also comprises on the basis of optical line terminal structure shown in Figure 6:
The optical line terminal of present embodiment can be for the technical scheme of the session service control method embodiment five that carries out EPON shown in Figure 5, and its realization principle and technique effect are similar, repeat no more herein.
Among the OLT that Fig. 6 to Fig. 8 embodiment of the present invention describes, described terminal equipment can comprise: the IAD that ONU is internal or external; Perhaps, under the ONU with IP phone, mediaphone or the computer of software terminal is housed.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises above-mentioned each embodiment of the method when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the session service control method of an EPON is characterized in that, comprising:
Optical line terminal receives the conference call request that comprises the terminal called device identification that calling terminal equipment sends;
Described optical line terminal is according to the terminal called device identification, determines whether described optical line terminal subordinate's terminal equipment of described terminal called equipment;
If then described optical line terminal sends to described terminal called equipment with described conference call request;
Described optical line terminal receives the call message of described terminal called equipment feedback;
Described optical line terminal is set up the media flow transmission passage between described calling terminal equipment and the terminal called equipment.
2. method according to claim 1 is characterized in that, described optical line terminal receives before the conference call request that comprises the terminal called device identification of calling terminal equipment transmission, also comprises:
The login request message that described optical line terminal receiving terminal apparatus sends;
Described optical line terminal sends to equipment of the core network with described login request message;
Described optical line terminal receives the response message that succeeds in registration of described equipment of the core network feedback;
Described optical line terminal is stored address information corresponding to described Terminal Equipment Identifier;
Describedly determine whether described optical line terminal subordinate's terminal equipment of described terminal called equipment, comprising:
According to the address information of described terminal called device identification and storage, determine whether described optical line terminal subordinate's terminal equipment of described terminal called equipment.
3. method according to claim 1 is characterized in that, if the terminal equipment that described terminal called equipment is not described optical line terminal subordinate, described method then also comprises:
Described optical line terminal sends to equipment of the core network with described conference call request, so that described equipment of the core network is called out control to the session between described calling terminal equipment and the terminal called equipment.
4. method according to claim 1 and 2 is characterized in that, describedly determines that described terminal called equipment whether before described optical line terminal subordinate's the terminal equipment, also comprises:
Described optical line terminal determines that core net breaks down, and opens the inside conversation control function of described optical line terminal.
5. method according to claim 4 is characterized in that, described optical line terminal determines that core net breaks down, and comprising:
Described optical line terminal determines that by the communications status of monitoring core net described core net breaks down; Perhaps,
Described optical line terminal determines that by do not receive the conference call response message of equipment of the core network feedback in Preset Time described core net breaks down.
6. an optical line terminal is characterized in that, comprising:
Receiver module is used for receiving the conference call request that comprises the terminal called device identification that calling terminal equipment sends;
Determination module is used for according to described terminal called device identification, determines whether described optical line terminal subordinate's terminal equipment of described terminal called equipment;
Call processing module if be used for, then sends to described terminal called equipment with described conference call request;
The Path Setup module is used for receiving the call message that described terminal called equipment feeds back, and sets up the media flow transmission passage between described calling terminal equipment and the terminal called equipment.
7. optical line terminal according to claim 6 is characterized in that, also comprises:
The trade mark agency module is used for the login request message that receiving terminal apparatus sends; Described login request message is sent to equipment of the core network; Receive the response message that succeeds in registration of described equipment of the core network feedback; Store address information corresponding to described Terminal Equipment Identifier;
Described determination module, the concrete address information that is used for according to described terminal called device identification and storage is determined whether described optical line terminal subordinate's terminal equipment of described terminal called equipment.
8. optical line terminal according to claim 6, it is characterized in that, described call processing module, if the terminal equipment that is not described optical line terminal subordinate for described terminal called equipment also, described conference call request is sent to equipment of the core network, so that described equipment of the core network is called out control to the session between described calling terminal equipment and the terminal called equipment.
9. according to claim 6 or 7 described optical line terminals, it is characterized in that, also comprise:
The function opening module be used for to determine that described terminal called equipment whether before described optical line terminal subordinate's the terminal equipment, determines that core net breaks down, and opens the inside conversation control function of described optical line terminal.
10. optical line terminal according to claim 9 is characterized in that, described function opening module specifically is used for the communications status by the monitoring core net, determines that described core net breaks down; Perhaps, by in Preset Time, not receiving the conference call response message of equipment of the core network feedback, determine that described core net breaks down.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103107997A (en) * | 2013-03-13 | 2013-05-15 | 北京电信规划设计院有限公司 | Passive optical network session service distribution method |
| CN104767751A (en) * | 2015-04-02 | 2015-07-08 | 大唐移动通信设备有限公司 | Session control method and device |
| CN105263071A (en) * | 2015-10-30 | 2016-01-20 | 上海斐讯数据通信技术有限公司 | OLT self-adaptive system and method thereof |
| CN108924374A (en) * | 2018-07-09 | 2018-11-30 | 中国联合网络通信集团有限公司 | Soft switch method of calling, Softswitch, called end ONU |
| CN105263071B (en) * | 2015-10-30 | 2019-07-16 | 上海斐讯数据通信技术有限公司 | A kind of OLT Adaptable System and its method |
| CN111222350A (en) * | 2018-11-23 | 2020-06-02 | 中国电信股份有限公司 | System and method for associating optical fibers with equipment ports |
| CN117319560A (en) * | 2023-11-29 | 2023-12-29 | 深圳市博安智控科技有限公司 | Method, device, equipment and storage medium for communication between buildings |
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