CN101867586A - Method and system for realizing cross network segment signaling interworking of videoconference system - Google Patents
Method and system for realizing cross network segment signaling interworking of videoconference system Download PDFInfo
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Abstract
The invention discloses a method and a system for realizing cross network segment signaling interworking of a videoconference system, and is used for realizing RAS signaling interworking between a terminal and a gatekeeper in different network segments, wherein the method comprises the steps that: the terminal is registered to an RAS agent, the RAS agent establishes the mapping relation between a serial number in the RAS signaling message and the source IP address as well as port of the terminal after receiving the RAS signaling message initiated by the terminal, and forwards the RAS signaling message to a gatekeeper; and the RAS agent sends the RAS response message to the corresponding terminal according to the established mapping relation after receiving the RAS response message replied by the gatekeeper. The technical scheme of the invention can realize the RAS signaling communication between a plurality of terminals in different network segments and the gatekeepers in extranets.
Description
Technical field
The present invention relates to the video conferencing technical field, relate in particular to a kind of method and system that realize the TV conference system cross network segment signaling interworking.
Background technology
TV conference system is meant utilizes TV and special equipment, by communication, computer network, the meeting room in two places or a plurality of places is coupled together, and holds a kind of communication technology real-time, two-way, interactively video conferencing with TV mode.TV conference system can connect a plurality of independently subnets, and allow the terminal in these subnets to add same meeting, because each subnet belongs to different networks, can not intercommunication between each subnet, therefore, how to realize guaranteeing in each subnet terminal can and the Internet on the gatekeeper between RAS (Registration, Admission ﹠amp; Status, registration, access authentication and status poll) signalling interworking just becomes the problem that needs solve.
Summary of the invention
The technical problem that the present invention solves provides a kind of method and system that realize the TV conference system cross network segment signaling interworking, is used for realizing the intercommunication of the terminal of different segment and the RAS signaling between the gatekeeper.
For solving the problems of the technologies described above, the invention provides a kind of method that realizes the TV conference system cross network segment signaling interworking, this method comprises:
Endpoint registration is to registration, access authentication and status poll (RAS) agency, after the RAS agency receives the RAS signaling message of terminal initiation, set up sequence number and the source IP address of this terminal and the mapping relations of port in this RAS signaling message, and this RAS signaling message is forwarded to the gatekeeper;
Described RAS agency is sent to relevant terminal according to the described mapping relations of setting up with described RAS response message after receiving the RAS response message that the gatekeeper replys.
Further, the RAS signaling message that described terminal is initiated comprises: register requirement, call request, cancel register request, deletion terminal request or state keep-alive request.
Further, when the RAS signaling message that described terminal is initiated was login request message, described method specifically comprised:
When RAS agency receives the login request message of terminal, first sequence number in the described login request message replaced with second sequence number after, described login request message is forwarded to the gatekeeper; And the mapping relations of the source IP address of described first sequence number, second sequence number and this terminal and port are recorded transmit in the mapping table;
When RAS agency receives accreditation verification that the gatekeeper replys or registration reject message, search described forwarding mapping table according to second sequence number in described accreditation verification or the registration reject message, and after described second sequence number is reduced to first sequence number, described accreditation verification or registration reject message are forwarded to relevant terminal according to the IP address and the port of the described second sequence number correspondence that finds.
Further, described method also comprises:
When described RAS agency receives described accreditation verification or registration reject message, create or the renewal terminal list according to port-mark, source IP address and the port of this terminal in described accreditation verification or the registration reject message, wherein said terminal list is used to preserve the corresponding relation of port-mark, source IP address and the port of terminal;
When described RAS agency receives the RAS signaling message that the gatekeeper initiates, search terminal list according to the terminal iidentification in the described RAS signaling message, and described RAS signaling message is forwarded to relevant terminal according to the IP address and the port of the terminal iidentification correspondence that finds.
Further, described method also comprises:
After described RAS agency receives the described login request message of terminal transmission; if in preset time length, do not receive the login request message or the state keep-alive request message of this terminal, then delete terminal iidentification, source IP address and the port of this terminal in the described terminal list.
Further, the RAS signaling message of described gatekeeper's initiation comprises: removal request, state request;
And described gatekeeper is when initiating status request message, and carried terminal identifies in the status request message of initiating.
The present invention also provides a kind of system that realizes the TV conference system cross network segment signaling interworking, and this system comprises: terminal, gatekeeper and RAS agency,
Described RAS agency is used for, receive the RAS signaling message that terminal initiates after, set up sequence number and the source IP address of this terminal and the mapping relations of port in this RAS signaling message, and this RAS signaling message be forwarded to the gatekeeper; And, receive the RAS response message that the gatekeeper replys after, according to the described mapping relations of setting up described RAS response message is sent to relevant terminal;
Described gatekeeper is used for, receive the RAS signaling message that described RAS agency sends after, reply the RAS response message.
Further, the RAS signaling message of described terminal initiation comprises login request message;
Described RAS agency is further used for, when receiving the login request message of terminal, first sequence number in the described login request message replaced with second sequence number after, described login request message is forwarded to the gatekeeper; And the mapping relations of the source IP address of described first sequence number, second sequence number and this terminal and port are recorded transmit in the mapping table; And when receiving accreditation verification that the gatekeeper replys or registration reject message, search described forwarding mapping table according to second sequence number in described accreditation verification or the registration reject message, and after described second sequence number is reduced to first sequence number, described accreditation verification or registration reject message are forwarded to relevant terminal according to the IP address and the port of the described second sequence number correspondence that finds.
Further, described RAS agency also is used for, when receiving described accreditation verification or registration reject message, create or the renewal terminal list according to terminal iidentification, source IP address and the port of this terminal in the described registration confirmation message, wherein said terminal list is used to preserve the corresponding relation of terminal iidentification, source IP address and the port of terminal; When receiving the RAS signaling message that the gatekeeper initiates, search terminal list according to the terminal iidentification in this RAS signaling message, and described RAS signaling message is forwarded to relevant terminal according to the IP address and the port of the terminal iidentification correspondence that finds;
Wherein, the RAS signaling message that described gatekeeper initiates comprises: removal request, state request, and described gatekeeper is further used for carried terminal sign in the message of the state of initiation request.
Further; described RAS agency also is used for; after receiving the described login request message of terminal transmission; if in preset time length, do not receive the login request message or the state keep-alive request message of this terminal, then delete terminal iidentification, source IP address and the port of this terminal in the described terminal list.
Adopt technical solution of the present invention, can realize that a plurality of terminals that are distributed in different segment (these network segments can not intercommunication) carry out the communication of RAS signaling aspect with the gatekeeper who is in outer net.This scheme implements comparatively simple, and, owing to only need to use an outer net gatekeeper just can realize the registration demand of the terminal of a plurality of network segments simultaneously, thereby saved the IP address resource.
Description of drawings
Fig. 1 is the networking schematic diagram of the realization RAS signaling inter-network section intercommunication of the embodiment of the invention;
Fig. 2 is the RAS Signalling exchange schematic diagram between each module of the embodiment of the invention;
Fig. 3 is that being acted on behalf of by RAS under the scene of terminal transmission RRQ of the embodiment of the invention realized signaling forwarding schematic diagram;
Fig. 4 sends under the scene of DRQ the RAS agency by the gatekeeper and realizes that signaling transmits schematic diagram for the embodiment of the invention.
Embodiment
For the RAS signaling between conference terminal and the gatekeeper under the situation that solves not intercommunication of multisegment can not intercommunication problem, the invention provides a kind of scheme of TV conference system cross network segment signaling interworking, it conceives as follows substantially:
For realizing that the obstructed logical subnetwork of several IP layers communicates, consider to introduce the inter-network section transmission that a RAS agency realizes the RAS signaling, the method of the agency service by being simple and easy to usefulness realizes being in the terminal of different segment can be smoothly with gatekeeper's communication, and implement fairly simplely, do not need all to distribute a special IP address for the terminal of each network segment.
After introducing the RAS agency, the RAS signaling between terminal and the gatekeeper is specifically related to following two aspects by RAS agency's concrete transfer mechanism:
1. the RAS signaling of sending from terminal is how correct is transmitted to the gatekeeper, exist under the situation of a plurality of subnets, the terminal that is in different sub-network is registered the RAS agency respectively as the gatekeeper, and the RAS agency is transmitted to the gatekeeper who is in outer net after receiving relevant signaling;
2. the RAS signaling of sending from the gatekeeper is how correct is transmitted to terminal, owing to have a plurality of terminals, thereby need to determine which terminal is the RAS signaling that the gatekeeper sends be transmitted to.But because the RAS signaling is not to prepare for the inter-network section, do not have can not provide the IP field that is forwarded to certain designated terminal yet, therefore, need find out corresponding solution.When considering solution, also need to consider two kinds of situations: the passive transmission of a kind of gatekeeper of being RAS signaling, earlier send RRQ (RegistrationRequest such as terminal to the gatekeeper, the endpoint registration request) message, the gatekeeper replys RCF (Registration Confirm, endpoint registration is confirmed) or the situation of RRJ (Registration Reject, endpoint registration refusal) message; Another kind is the RAS signaling that the gatekeeper initiatively initiates, and hangs up endpoint registration Indication message DRQ (Disengage Request, terminal deletion request) such as what the gatekeeper initiatively sent to terminal.It is catechetical to consider that the RAS signaling all is based on UDP (User Datagram Protocol, User Datagram Protocol), and promptly terminal sends a request, and the gatekeeper replys this request then, for example the corresponding RCF of RRQ (asking) (answering); In addition, all include a sequence number (sqNum) field in the RAS signaling.Therefore, can utilize sqNum, set up the sign of RAS message and relevant terminal or the corresponding relation between the IP address as index, so finish request between terminal and the gatekeeper＜-reply flow process.
Based on above basic design, the invention provides a kind of method that realizes the TV conference system cross network segment signaling interworking, endpoint registration is behind the RAS agency, and this method comprises:
When the RAS agency receives the RAS signaling message of terminal initiation, set up sequence number and the source IP address of this terminal and the mapping relations of port in the RAS signaling message, and described RAS signaling message is forwarded to the gatekeeper;
Described RAS agency is sent to relevant terminal according to the described mapping relations of setting up with described RAS response message after receiving the RAS response message that the gatekeeper replys.
Wherein, the RAS signaling message that described terminal is initiated comprises: registration request (rrq), call request (ARQ), cancel register request (URQ), deletion terminal request (DRQ) or state keep-alive request (IRR).
Further, when described RAS signaling was rrq message, the RAS agency specifically realized the intercommunication processing of RAS signaling inter-network section in the following way:
When the RAS agency receives the rrq message of terminal, produce a new sqNum, after former sqNum in the described rrq message (below be also referred to as a sqNum) being replaced with the new sqNum (below be also referred to as the 2nd sqNum) of generation, described rrq message is forwarded to the gatekeeper; And the mapping relations of the source IP address of a described sqNum, the 2nd sqNum and this terminal and port are recorded transmit in the mapping table;
When RAS agency receives RCF that the gatekeeper replys or RRJ message, search described forwarding mapping table according to the 2nd sqNum in described RCF or the RRJ message, and after the 2nd sqNum in RCF or the RRJ message is reduced to a sqNum, described RCF or RRJ message are forwarded to relevant terminal according to the IP address and the port of described the 2nd sqNum correspondence that finds.
Need to prove that the content of preserving in the forwarding mapping table among the present invention comprises former sqNum, new sqNum, IP address and port.
Further, when RAS agency receives RCF that the gatekeeper replys or RRJ message, judge whether to write down the IP address and the terminal iidentification of this terminal, if do not have, then IP address and the terminal iidentification with terminal is kept in the terminal list;
When RAS agency receives the RAS signaling message (as DRQ message, IRQ message etc.) that the gatekeeper initiatively initiates, search terminal list according to the terminal iidentification in this RAS signaling message, according to the IP address and the port of the terminal iidentification correspondence that finds, this RAS signaling message is forwarded to relevant terminal.
Clearer for what purpose of the present invention, technical method and advantage were expressed, below in conjunction with accompanying drawing and preferred embodiment the present invention is done further explanation.
Fig. 1 shows the networking schematic diagram of the realization RAS signaling inter-network section intercommunicating system of the embodiment of the invention, this system comprises terminal, the gatekeeper, as shown in Figure 1, the terminal protocol stack be in different segment and can not the local area network (LAN) of intercommunication in, and the gatekeeper is in the Internet net, in order to realize the intercommunication of the RAS signaling between terminal protocol stack and the gatekeeper, introduced RAS agency in the present embodiment, wherein the major function of each network element realization is described below:
The terminal protocol stack, the Signalling exchange of main realization and gatekeeper and multiple spot control module (MCU);
The gatekeeper mainly is responsible for the processing terminal registration, calls out Bandwidth Management etc.;
RAS agency is mainly used in the intercommunication that realizes RAS signaling inter-network section and handles, and comprising: the terminal protocol stack among the network segment B is dealt into agency's RAS message, is forwarded to the gatekeeper by another segment A; And with the RAS message of the gatekeeper in the segment A, B is forwarded to terminal by the network segment.
Wherein, conference terminal (also being called for short terminal) is registered to the RAS agency and can realizes in the following way: the RAS agency can cross over a plurality of network segments, under the multisegment situation, each network segment all has corresponding IP address, RAS agency can intercept message on the IP address of a plurality of network segments, the terminal that is in certain network segment then is registered to the RAS agency on should the IP address of the network segment.
In addition, the RAS agency possesses the function of RAS encoding and decoding, can resolve the RAS signaling.Only need upgrade sqNum for the RAS signaling, perhaps extract some relevant information (as IP address, port information etc.) and preserve, other guide need not be revised, and directly full content is transmitted to get final product.
Further, the RAS agency also is used for:
Receive gatekeeper's RCF or RRJ message from segment A after, judge whether to write down terminal iidentification, source IP and the port of this terminal in the RCF message, if there is not record, a then newly-built terminal list is kept at the terminal iidentification in the RCF message, source IP and port in the newly-built terminal list; If record then only needs the terminal list that has write down is upgraded.
Similarly, RAS agency also should judge source IP and port, if existing corresponding record then is forwarded to the gatekeeper when network segment B receives other message; If there is not record, show the also not registration of this terminal, then abandon.
Thereby the RAS agency is follow-up when receiving the RAS signaling message that the gatekeeper initiatively initiates, and can search the terminal list of preservation according to the terminal iidentification that carries in the RAS signaling message, and this RAS signaling message is forwarded to corresponding terminal.
In addition; the RAS agency can set up timeout mechanism; if after receiving the rrq message of terminal in the preset time length (as 10 minutes etc.) do not receive RRQ (comprise keep-alive RRQ or RRQ) fully or IRR message, then delete source IP address, port and terminal iidentification in the corresponding terminal tabulation.
As shown in Figure 2, it is catechetical that the RAS signaling all is based on UDP.RAS Signalling exchange flow process between each module is seen Fig. 2.
Wherein, the RAS signaling that terminal is initiatively initiated comprises: login request message, ARQ (call request message), URQ (cancel register request message), DRQ (deletion request message) or RR (state keep-alive message) etc.
The RAS signaling that the gatekeeper initiatively initiates comprises: DRQ (deletion request message), IRQ (SOT state of termination request message) etc.
Wherein, DRQ message both can terminal be initiated, and also can be initiated by GK.
Fig. 3 shows and sends RRQ with terminal is example, and the RAS agency realizes the handling process that signaling is transmitted, and for the RAS signaling that other-end is initiatively initiated, as ARQ, DRQ etc., its forwarding strategy is suitable for too.As shown in Figure 3, this flow process specifically describes as follows:
After the RAS agency receives the rrq message of terminal transmission, because the gatekeeper has only one, it is just passable that the RAS signaling directly is transmitted to the gatekeeper, and before transmission, be that index is set up one and transmitted mapping table according to the sqNum sequence number in the RAS signaling, the IP address of storage associated terminal in the table, sign, relevant informations such as port; RAS agency receives after the RCF message that the gatekeeper replys, and resolves the sequence number in the message and finds the IP address of counterpart terminal according to index, and send to corresponding terminal.
In addition, referring to Fig. 3, when RAS agency receives RCF that the gatekeeper replys or RRJ message, also will create or upgrade terminal list according to the IP address of this terminal in the described RCF message and terminal iidentification, wherein said terminal list be used to preserve the corresponding relation of IP address, port and the terminal iidentification of terminal.
Fig. 4 shows and sends DRQ with the gatekeeper is example, and RAS agency realizes the handling process that signaling is transmitted, the RAS signaling of initiatively initiating for other gatekeepers, and as IRQ etc., its forwarding strategy is suitable for too.As shown in Figure 4, this flow process specifically describes as follows:
The RAS signaling request of initiatively initiating for the gatekeeper, the terminal list that the RAS agency is set up before then utilizing, this terminal list is an index with terminal iidentification (endPointID) mainly, main IP address and the port information of preserving terminal, like this, the RAS agency just can find the counterpart terminal address by this terminal list.That is, when RAS agency receives the RAS signaling message that the gatekeeper initiates, search terminal list according to the terminal iidentification in this RAS signaling message, and this RAS signaling message is forwarded to relevant terminal according to the IP address and the port of the terminal iidentification correspondence that finds.
But individual special case is wherein arranged, do not have this field of endPointID in IRQ (the meeting keep-alive request) message, this need revise gatekeeper's processing, increases this field of terminal iidentification when sending IRQ.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. a method that realizes the TV conference system cross network segment signaling interworking is characterized in that, this method comprises:
Endpoint registration is to registration, access authentication and status poll (RAS) agency, after the RAS agency receives the RAS signaling message of terminal initiation, set up sequence number and the source IP address of this terminal and the mapping relations of port in this RAS signaling message, and this RAS signaling message is forwarded to the gatekeeper;
Described RAS agency is sent to relevant terminal according to the described mapping relations of setting up with described RAS response message after receiving the RAS response message that the gatekeeper replys.
2. the method for claim 1 is characterized in that,
The RAS signaling message that described terminal is initiated comprises: register requirement, call request, cancel register request, deletion terminal request or state keep-alive request.
3. method as claimed in claim 2 is characterized in that, when the RAS signaling message that described terminal is initiated was login request message, described method specifically comprised:
When RAS agency receives the login request message of terminal, first sequence number in the described login request message replaced with second sequence number after, described login request message is forwarded to the gatekeeper; And the mapping relations of the source IP address of described first sequence number, second sequence number and this terminal and port are recorded transmit in the mapping table;
When RAS agency receives accreditation verification that the gatekeeper replys or registration reject message, search described forwarding mapping table according to second sequence number in described accreditation verification or the registration reject message, and after described second sequence number is reduced to first sequence number, described accreditation verification or registration reject message are forwarded to relevant terminal according to the IP address and the port of the described second sequence number correspondence that finds.
4. method as claimed in claim 3 is characterized in that, described method also comprises:
When described RAS agency receives described accreditation verification or registration reject message, create or the renewal terminal list according to port-mark, source IP address and the port of this terminal in described accreditation verification or the registration reject message, wherein said terminal list is used to preserve the corresponding relation of port-mark, source IP address and the port of terminal;
When described RAS agency receives the RAS signaling message that the gatekeeper initiates, search terminal list according to the terminal iidentification in the described RAS signaling message, and described RAS signaling message is forwarded to relevant terminal according to the IP address and the port of the terminal iidentification correspondence that finds.
5. method as claimed in claim 4 is characterized in that, described method also comprises:
After described RAS agency receives the described login request message of terminal transmission; if in preset time length, do not receive the login request message or the state keep-alive request message of this terminal, then delete terminal iidentification, source IP address and the port of this terminal in the described terminal list.
6. method as claimed in claim 4 is characterized in that,
The RAS signaling message that described gatekeeper initiates comprises: removal request, state request;
And described gatekeeper is when initiating status request message, and carried terminal identifies in the status request message of initiating.
7. a system that realizes the TV conference system cross network segment signaling interworking is characterized in that, this system comprises: terminal, gatekeeper and RAS agency,
Described RAS agency is used for, receive the RAS signaling message that terminal initiates after, set up sequence number and the source IP address of this terminal and the mapping relations of port in this RAS signaling message, and this RAS signaling message be forwarded to the gatekeeper; And, receive the RAS response message that the gatekeeper replys after, according to the described mapping relations of setting up described RAS response message is sent to relevant terminal;
Described gatekeeper is used for, receive the RAS signaling message that described RAS agency sends after, reply the RAS response message.
8. system as claimed in claim 7 is characterized in that,
The RAS signaling message that described terminal is initiated comprises login request message;
Described RAS agency is further used for, when receiving the login request message of terminal, first sequence number in the described login request message replaced with second sequence number after, described login request message is forwarded to the gatekeeper; And the mapping relations of the source IP address of described first sequence number, second sequence number and this terminal and port are recorded transmit in the mapping table; And when receiving accreditation verification that the gatekeeper replys or registration reject message, search described forwarding mapping table according to second sequence number in described accreditation verification or the registration reject message, and after described second sequence number is reduced to first sequence number, described accreditation verification or registration reject message are forwarded to relevant terminal according to the IP address and the port of the described second sequence number correspondence that finds.
9. system as claimed in claim 8 is characterized in that,
Described RAS agency also is used for, when receiving described accreditation verification or registration reject message, create or the renewal terminal list according to terminal iidentification, source IP address and the port of this terminal in the described registration confirmation message, wherein said terminal list is used to preserve the corresponding relation of terminal iidentification, source IP address and the port of terminal; When receiving the RAS signaling message that the gatekeeper initiates, search terminal list according to the terminal iidentification in this RAS signaling message, and described RAS signaling message is forwarded to relevant terminal according to the IP address and the port of the terminal iidentification correspondence that finds;
Wherein, the RAS signaling message that described gatekeeper initiates comprises: removal request, state request, and described gatekeeper is further used for carried terminal sign in the message of the state of initiation request.
10. system as claimed in claim 8 or 9 is characterized in that,
Described RAS agency also is used for; after receiving the described login request message of terminal transmission; if in preset time length, do not receive the login request message or the state keep-alive request message of this terminal, then delete terminal iidentification, source IP address and the port of this terminal in the described terminal list.
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| PCT/CN2011/074993 WO2012000364A1 (en) | 2010-06-29 | 2011-05-31 | Method and system for implementing cross-segment signaling intercommunication in video conference system |
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| WO2012000364A1 (en) * | 2010-06-29 | 2012-01-05 | 中兴通讯股份有限公司 | Method and system for implementing cross-segment signaling intercommunication in video conference system |
| CN102523572A (en) * | 2011-11-23 | 2012-06-27 | 中兴通讯股份有限公司 | Call request information processing method and device |
| CN102523572B (en) * | 2011-11-23 | 2017-12-22 | 中兴通讯股份有限公司 | The processing method and processing device of call request message |
| CN102594866A (en) * | 2011-12-22 | 2012-07-18 | 中国电子科技集团公司第十五研究所 | Map service providing system and method |
| CN102594866B (en) * | 2011-12-22 | 2015-02-18 | 中国电子科技集团公司第十五研究所 | Map service providing system and method |
| CN104660952B (en) * | 2015-03-04 | 2018-06-08 | 苏州科达科技股份有限公司 | Video conference communication method and system |
| CN104660952A (en) * | 2015-03-04 | 2015-05-27 | 苏州科达科技股份有限公司 | Video conference communication method and system |
| CN108055262A (en) * | 2017-12-11 | 2018-05-18 | 苏州科达科技股份有限公司 | Video conference terminal register method, terminal and gatekeeper |
| CN108055262B (en) * | 2017-12-11 | 2020-08-18 | 苏州科达科技股份有限公司 | Video conference terminal registration method, terminal and gatekeeper |
| CN109445925A (en) * | 2018-11-09 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of application program adapting method, apparatus and system |
| CN109889763A (en) * | 2019-03-20 | 2019-06-14 | 苏州科达科技股份有限公司 | Call-establishing method, device and the storage medium of TV conference system |
| CN111083427A (en) * | 2019-12-27 | 2020-04-28 | 随锐科技集团股份有限公司 | Data processing method of embedded terminal and 4K video conference system |
| CN111083427B (en) * | 2019-12-27 | 2021-05-18 | 随锐科技集团股份有限公司 | Data processing method of embedded terminal and 4K video conference system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101867586B (en) | 2014-08-13 |
| WO2012000364A1 (en) | 2012-01-05 |
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