CN100463480C - Calling flow control method - Google Patents
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- CN100463480C CN100463480C CNB021367531A CN02136753A CN100463480C CN 100463480 C CN100463480 C CN 100463480C CN B021367531 A CNB021367531 A CN B021367531A CN 02136753 A CN02136753 A CN 02136753A CN 100463480 C CN100463480 C CN 100463480C
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Abstract
A calling flow control method is realized through configuring each configuration parameters in gateway calling flow configuration list of each gateway as well as each configuration parameters in gate keeper calling flow configuration list of each gate keeper. The method makes users realize calling flow control expediently and flexibly through customized strategies without changing current network planning and adding any equipment as well as taking full advantage of resources of gateways and gate keepers.
Description
Affiliated field
The present invention relates in a kind of data communication field the method according to custom strategies control gateway and gatekeeper's calling flow, belong to the data communication field, particularly relate to based on the IP telephony network field of standard H.323 based on the gatekeeper of standard H.323.
Background technology
Since 1999, domestic telecom operators (China Telecom, CHINAUNICOM, China Jitong, China Netcom and China Mobile) set up one after another separately based on the IP telephony network of standard H.323 and come into operation in succession.H.323 standard code the function that in IP telephony network, possessed of gatekeeper mainly contain: access permission, bandwidth control, territory management, address resolution, call control signalling and call manager.Present stage is classified into the territory to adopt superior GK, level-1 GK, secondary gatekeeper, and higher level's Gatekeeper management gatekeeper of subordinate hangs up being most widely used of " pyramid " type networking structure of this territory gateway under each gatekeeper.
In three grades of IP phone gateway gatekeepers' of a typical case networking example, a gateway is received the call that the PSTN side is come, gateway can the gatekeeper in territory be initiated authentication and route requests (ARQ message) under it, after the gatekeeper passed through the authentication of gateway, in fact the process of route was exactly to find the process of the call signaling address of called gateway.Under the current mechanism situation, the gatekeeper at first checks whether have gateway to support this calling under this territory according to the called number prefix of required route, if find qualified gateway, the gatekeeper returns to the caller gateway with the call signaling address of this gateway by ACF message, and route finishes; If the gatekeeper does not find qualified gateway in this territory, the gatekeeper can send the LRQ message request to the neighborhood gatekeeper and inquire about whether neighborhood has the gateway of supporting this prefix, if find, then the neighborhood gatekeeper can return to the caller gatekeeper with the call signaling address of called gateway by LCF message, return to the caller gateway by the caller gatekeeper again, route finishes; If the neighborhood gatekeeper can not find the gateway of supporting this prefix, the caller gatekeeper can receive the LRJ message that the neighborhood gatekeeper sends, the expression routing failure, and at this moment the caller gatekeeper represents routing failure for caller gateway answer ARJ message.
Under existing technical conditions, the gatekeeper in the IP telephony network still has the following disadvantages:
1) customizable route querying strategy not flexibly.Because the gateway of being managed in the gatekeeper territory exists very big difference at aspects such as function, type, capacity, stability, call completing rates, and operator can propose multiple demand according to the operation needs in actual use, this just objectively require the gatekeeper can provide a whole set of can make the collaborative work of multiple class gateway, flexibly, customizable called gateway route querying strategy, realize the balanced or unbalanced distribution of network traffics, to meet customer need better.
2) do not realize preferred route between the gatekeeper.The process (being gatekeeper's address translation function) that present higher level gatekeeper searches the subordinate gatekeeper address of supporting the called number business only is confined to find or do not find, and be not specifically defined when having a plurality of gatekeepers eligible simultaneously, how by certain method from a plurality of gatekeepers, optimize optimum (suitable standard may be defined as its down under gateway nearest and current performance is optimum apart from the called subscriber) a gatekeeper, further find an only called gateway again, its call signaling address is replied to the caller gateway.
3) do not realize preferred route between gateway.The process that present gatekeeper searches called gateway call signaling address only is confined to called gateway and whether finds, and be not specifically defined when having a plurality of gateways eligible simultaneously, how from a plurality of gateways, optimize a gateway of optimum (suitable standard may be defined as nearest and current performance is optimum apart from the called subscriber), its call signaling address is replied to the caller gateway by certain method.
4) do not realize route stand-by between the gatekeeper.When under certain gatekeeper all support certain professional gateway because of certain reason cisco unity malfunction or work when too busy, also there is not a kind of like this mechanism, promptly just known the gateway bandwidth usage under the gatekeeper of subordinate in advance in this one-level of higher level gatekeeper, realize in view of the above under the main gatekeeper of using heavy duty situation, automatically route the call to the backup gatekeeper and get on, use backup gateway under the backup gatekeeper to take over or share this master with the calling on the gatekeeper.
5) do not realize the gateway route stand-by.When certain gateway because of certain reason cisco unity malfunction or work when too busy, the gatekeeper does not also have ability dynamically to provide other backup gateway to take over or shares calling on this gateway.
6) do not make full use of gateway and gatekeeper's resource.Address translation is one of gatekeeper function in the standard H.323 just, and the gatekeeper also has other many functions, and as in gatekeeper's bandwidth management capability, the gatekeeper can obtain the related data of each gateway Bandwidth Dynamic Allocation situation of this territory; In gatekeeper's call management functionality, the gatekeeper can obtain the prefix information that each gateway information of this territory and gateway are supported; In gatekeeper's access permission function, the gatekeeper can obtain Calling Side gateway or gatekeeper's IP address and port numbers again.And these resources advantages of gatekeeper are not fully exerted in the process of address translation.Further, if can realize allowing gateway and gatekeeper's resource be shared use, just can provide more foundation for the flow control function of strengthening the gatekeeper by other gatekeeper.
Summary of the invention
The technical problem that the present invention solves provides a kind of calling flow control method flexibly that can make full use of gateway and gatekeeper's resource.
A kind of calling flow control method based on IP telephony network that the present invention proposes comprises following treatment step:
The first step, the foreground gatekeeper calls out one the tunnel and carries out address translation, if the gatekeeper finds one or more gateways to support the called number prefix of required route, then changes step 2; If the gatekeeper finds one or more gatekeepers to support the called number prefix of required route, then change step 6;
Second step, seek the IP address network segment with source end IP matching addresses, read gateway call flow allocation list parameter that should the IP address network segment;
The 3rd step choose gateway priority height, and the gateway remaining bandwidth was not less than the gateway of gateway priority threshold values with the ratio of total bandwidth, if there are a plurality of gateways eligible, changeed step 4; If the gatekeeper can not find such gateway, then reply refuse information to Calling Side; If have only a gateway eligible, call signaling address that then will this qualified gateway replies to the caller gateway;
The 4th step according to the important level of called service, preferentially routed to the good gateway of performance with important service call, and non-important service call is preferentially routed to some gateway of poor-performing; If there are a plurality of gateways eligible, change step 5; If the gatekeeper can not find qualified gateway, then reply refuse information to Calling Side; If have only a gateway eligible, call signaling address that then will this qualified gateway replies to the caller gateway;
The 5th step, the gatekeeper according between gateway by the determined proportionate relationship of the professional weight coefficient of correspondence, adopt dynamic load share of command algorithm based on number of calls, realize dynamically distributing calling according to user-defined proportionate relationship between a plurality of gateways;
In the 6th step, the actual conditions according to existing gatekeeper institute supporting business preferentially route to the gatekeeper nearest apart from the called subscriber geographical position with service call; If can not find qualified gatekeeper, then reply refuse information to Calling Side; If filter through service priority, still have a plurality of gatekeepers eligible, then change step 7;
The 7th step, the gatekeeper according between the gatekeeper by the determined proportionate relationship of the professional weight coefficient of correspondence, adopt dynamic load share of command algorithm based on number of calls, realize dynamically distributing calling according to user-defined proportionate relationship between a plurality of gatekeepers.
A kind of calling flow control method that the present invention proposes not changing the existing network planning, does not increase under the prerequisite of any equipment, makes full use of gateway, the existing resources advantage of gatekeeper, makes the client can pass through custom strategies easily and flexibly:
1) realize to one-level H.323 the gateway network calling flow press equilibrium of special ratios relation or unbalanced distribution;
2) realize press equilibrium of special ratios relation or unbalanced distribution with the H.323 gatekeeper calling network flow of one-level;
3) the specific transactions area code of according to the actual requirements specific gatekeeper being supported is set priority, realizes distributing calling flow according to priority between different gatekeepers, promptly realizes between the gatekeeper the preferred route to the different business area code;
4) according to the actual requirements specific gateway is set priority, realize between different gateways, distributing calling flow, promptly realize preferred route between gateway according to priority;
5) the specific transactions area code of according to the actual requirements specific gateway being supported is set priority, realizes distributing calling flow according to priority between different gateways, promptly realizes between gateway the preferred route to the different business area code;
6) according to the actual requirements to specific gateway priority level initializing threshold values, realize ceasing to be in force automatically and recovering of preferred gateways, enable standby gateway simultaneously, promptly realize the route stand-by between gateway;
7) the specific transactions area code corresponding priorities of specific gateway being supported with border demand is factually set threshold values, realization ceases to be in force automatically and recovers the preferred gateways of specific transactions area code, enable standby gateway simultaneously, promptly realize the route stand-by between the gateway of specific transactions area code;
8) gatekeeper can dynamically adjust routing policy according to the resource operating position that the gatekeeper of subordinate or gateway are reported up, realizes the dynamic adjustment of calling flow between calling flow between the gatekeeper or gateway;
9) according to the actual requirements specific calling subscriber IP address field is formulated routing policy separately, realize preferred route, route stand-by, pro-rata calling flow the particular ip address section.
Description of drawings
Fig. 1 be one typically based on the networking diagram of protocol of I P telephone network H.323.
Embodiment
Specify calling flow control method of the present invention below in conjunction with drawings and Examples.
Each gatekeeper among Fig. 1 constitutes a territory, and arbitrary gatekeeper can control gateway in this territory and the calling flow on the gatekeeper by custom strategies.Superior GK GK management level-1 GK GK1 and level-1 GK GK2; Level-1 GK GK1 management secondary gatekeeper GK1, GK2, GK3 and gateway 1, gateway 2, level-1 GK GK2 management secondary gatekeeper GK4, GK5, GK6 and gateway 3, gateway 4; Each secondary gatekeeper manages two gateways again respectively.
A kind of H.323 gatekeeper that the present invention proposes controls H.323 gateway and the H.323 method of gatekeeper's calling flow according to custom strategies, by 4 frame systems that module is formed such as reporting mechanism between reporting mechanism and gatekeeper between gateway call flow allocation list, gatekeeper's calling flow allocation list, gateway gatekeeper, the function opposite independent of each module, implantable strong, the user both can realize some specific function by first as required selection portion sub-module, can once load whole modules again and realize all functions.Below divide four parts to introduce concrete calling flow control method of the present invention:
1) gateway call flow allocation list
Gateway call flow allocation list is arranged in the flow control property pages on this domain information one hurdle of gatekeeper's configuration interface.Project comprises in the page or leaf: caller IP address network segment, caller IP address network segment mask, gateway name, gateway total bandwidth, gateway priority, gateway priority threshold values, service priority, service priority threshold values, weight coefficient.
System has added a default IP address network segment (0.0.0.0), and the user can add other IP address network segment and corresponding mask as required voluntarily.Launch IP address network segment node, can see that each IP address network segment is thrown the net corresponding to one to close the calling flow allocation list.Gateway name in each pass calling flow allocation list of throwing the net and gateway total bandwidth have disposed in this territory gateway device property pages and have finished.Need user configured five parameters be: gateway priority, gateway priority threshold values, service priority, service priority threshold values, weight coefficient, wherein gateway priority, service priority are divided into 1～10 totally 10 ranks, and default level is 5; Gateway priority threshold values, service priority threshold values are divided into 1～100, and unit is (%), and the default priority threshold values is 100%; Weight coefficient is that positive integer gets final product, and the default-weight coefficient is 1.All configuration parameters send to foreground gatekeeper's program by inside story from the configuration backstage.
When foreground gatekeeper's program is carried out address translation to one tunnel calling, suppose that the gatekeeper has found the called number prefix that has one or more gateways to support required route, the end IP address, source that it is at first called out this road and the non-default ip address network segment in the allocation list carry out matching operation---and the non-default ip address network segment mask in end IP address, source and the allocation list is done and computing, and the gained result is if the IP address network segment that equals in the allocation list promptly is judged to coupling.If find the IP address network segment of coupling, gatekeeper's program reads H.323 gateway call flow allocation list parameter that should the IP address network segment; Otherwise gatekeeper's program reads giving tacit consent to the H.323 gateway call flow allocation list parameter of the network segment.Like this, the user just can in each specific territory or the access that comes of overseas IP address network segment call out, in gatekeeper's configuration, formulate different H.323 gateway flow control strategies flexibly, with be embodied as different regions, different types of access client provides different flow control strategies, thereby the more efficient use conventional network resources satisfies demand in many ways.Need additionally be pointed out that, gatekeeper's program Match IP Address network segment will be according to the most accurate matching principle, as the road calling that comes from 168.1.133.233, in gatekeeper's configuration 168.1.0.0/255.255.0.0 and two IP address network segments of 168.1.133.0/255.255.255.0 are arranged, according to the most accurate matching principle, this road is called out and will be complementary with a back network segment so.
Gatekeeper's program has been mated the IP address network segment, after reading accordingly H.323 gateway call flow allocation list parameter, at first entering gateway priority filters, choose gateway priority height, and gateway remaining bandwidth and the ratio of total bandwidth are not less than the gateway of gateway priority threshold values, if the gatekeeper can not find such gateway, then reply refuse information to Calling Side; If the gatekeeper finds that only surplus next gateway is eligible, then the call signaling address with this gateway replies to the caller gateway, and address translation finishes; If the gatekeeper finds that also remaining a plurality of gateways are eligible, then carry out subsequent analysis.Like this, the user just can be according to the actual conditions of existing gateway, and the gateway priority of the gateway that performance is good is set to high priority, make calling preferentially be routed to the high gateway of this gateway priority, thereby realize preferred route.Simultaneously, the poor slightly gateway priority of user's performance is set to low priority, because when the call load on the high priority gateway is overweight, must cause decreased performance, at this moment in a single day gatekeeper's program finds that the ratio of remaining bandwidth and total bandwidth of the gateway of high gateway priority is lower than gateway priority threshold values, it just can not route the call to this gateway again, but the backup gateway that can select other low priority, gateway priority threshold values not to cross the border, thereby realize route stand-by.
Filter through gateway priority, the gatekeeper finds that also remaining a plurality of gateways are eligible, just enters service priority and filters.The user can be according to the actual conditions of existing gateway institute supporting business, and according to the important level of called service, important service call is preferentially routed to the good gateway of performance, non-important service call is preferentially routed to some gateway of poor-performing, the service priority that promptly disposes the good pairing important service of gateway of performance is for high, and the service priority of non-important service is low; And some the service priority of the pairing important service of gateway of configuration poor performance is low, and the service priority of non-important service be a height, thereby realizes preferred route.Simultaneously, realized the route that backups each other again between the good gateway of gateway that performance is poor slightly and performance, because when the call load on the high service priority gateway is overweight, must cause decreased performance, at this moment in a single day gatekeeper's program finds that the ratio of remaining bandwidth and total bandwidth of the gateway of high service priority is lower than the service priority threshold values, it just can not route the call to this gateway again, but the backup gateway that can select other low service priority, service priority threshold values not to cross the border, thereby realize route stand-by.
If filter and the service priority filtration through gateway priority, still have a plurality of gateways eligible, gatekeeper's program will according between gateway by the determined proportionate relationship of the professional weight coefficient of correspondence, the dynamic load share of command algorithm based on number of calls that the employing system is built-in dynamically distributes calling to be implemented between these a plurality of gateways according to user-defined proportionate relationship.
2) gatekeeper's calling flow allocation list
Gateway call flow allocation list is arranged in the flow control property pages on neighborhood information one hurdle of gatekeeper's configuration interface.Project from left to right is followed successively by in the page or leaf: neighborhood IP address of equipment, service priority, weight coefficient.
H.323 the neighborhood IP address of equipment in gatekeeper's flow allocation list has disposed in neighborhood device attribute page or leaf and has finished.Two parameters that the user need dispose are: gatekeeper's service priority, weight coefficient, and wherein gatekeeper's service priority is divided into 1～10 totally 10 ranks, and default level is 5; Weight coefficient is that positive integer gets final product, and the default-weight coefficient is 1.All configuration parameters send to foreground gatekeeper's program by inside story from the configuration backstage.
When foreground gatekeeper's program was carried out address translation to one tunnel calling, gatekeeper's program found have a plurality of gatekeepers eligible, just enters service priority and filters.The user can be according to the actual conditions of existing gatekeeper institute supporting business, service call is preferentially routed to the gatekeeper nearest apart from the called subscriber geographical position, the service priority that promptly disposes the nearest gatekeeper of corresponding called service is for high, the gatekeeper's that corresponding called service is far away service priority is low, thereby realizes preferred route.Simultaneously, realized the route that backups each other between these gatekeepers again, because when the call load on the high service priority gatekeeper is overweight, must cause decreased performance, when the load on the high service priority gatekeeper reaches certain threshold values, this gatekeeper can notify higher level gatekeeper by the back with reporting mechanism between the gatekeeper who introduces with this situation, in a single day higher level gatekeeper's program finds the gatekeeper's of high service priority calling overload, it just can not route to this gatekeeper with this service call again, but can select other low service priority, call out the not backup gatekeeper of overload, thereby realize route stand-by.
If filter through service priority, still have a plurality of gatekeepers eligible, gatekeeper's program will according between the gatekeeper by the determined proportionate relationship of the professional weight coefficient of correspondence, the dynamic load share of command algorithm based on number of calls that the employing system is built-in dynamically distributes calling to be implemented between these a plurality of gatekeepers according to user-defined proportionate relationship.
3) reporting mechanism between the gateway gatekeeper
The effect of reporting mechanism is the situation that makes a plurality of traffic loads on gatekeeper's dynamic knowledge gateway between the gateway gatekeeper.For the gatekeeper, all business that its down some gateway is supported are all shared a total bandwidth corresponding to this gateway, this just brings a problem, when gateway is supported a plurality of business, and when the number of calls that this a plurality of business is supported is not quite similar, only depend on the service priority threshold values in the control table of gateway call flow amount can not distinguish the shared bandwidth of a plurality of business, also just can not accurately, in time forbid falling the business that call load is crossed the border on some gateways.Solution of the present invention is, when a certain moment gateway discovery is directed to certain specific transactions, the resource that Home Network is shut (mainly being the calling port resource of IP side and the relay resource of PSTN side) is in the time of can not supporting more calling, gateway sends resource to the registration gatekeeper immediately by RAI message and reports message, the temporary transient road closed to passage of request gatekeeper by this service call to this gateway.The gatekeeper receives the resource report message that gateway is sent, and sends out the request that acknowledge message is accepted gateway through legitimacy check back to gateway, and refreshes routing table, makes this gateway temporarily not support this business.Simultaneously, the gatekeeper starts one at this professional TTL timer, when this TTL timer expiry do not receive still that gateway sends to should professional resource reporting message (request continue to forbid or recover this business), then the gatekeeper refreshes routing table, makes this gateway recover to support this business again.Gateway starts the detecting timer after receiving gatekeeper's affirmation message, whether the forbidden service call resource of regular check returns to can be utilized state, in case resource recovery sends resource with regard to RAI message to the registration gatekeeper and reports message, request gatekeeper restoration route should business to this gateway.The gatekeeper receives the resource report message that gateway is sent, and sends out the request that acknowledge message is accepted gateway through legitimacy check back to gateway, and refreshes routing table, makes this gateway recover this business of support.
4) reporting mechanism between the gatekeeper
The effect of reporting mechanism is to make higher level gatekeeper's dynamic knowledge gatekeeper of subordinate go up the situation of a plurality of traffic loads between the gatekeeper.When a certain moment gatekeeper of subordinate finds to be directed to the specific transactions that certain caller IP network section is come, resource on this gatekeeper (mainly being the calling port resource of the gateway of having jurisdiction over and the gatekeeper's of subordinate that has jurisdiction over call resources) is in the time of can not supporting more calling, gatekeeper's RAI message immediately sends resource report message to higher level gatekeeper, and the service call of the temporary transient road closed to passage of request higher level gatekeeper by this caller IP network section is to this gatekeeper.Higher level gatekeeper receives the resource report message that the gatekeeper of subordinate sends, and sends out the request that acknowledge message is accepted the gatekeeper of subordinate for the gatekeeper of subordinate through legitimacy check back, and refreshes routing table, makes the gatekeeper of this subordinate temporarily not support this service call that this caller IP network section is next.Simultaneously, higher level gatekeeper starts one at this professional TTL timer, when this TTL timer expiry do not receive still that the gatekeeper of subordinate sends to should professional resource reporting message (request continue to forbid or recover this business), then higher level gatekeeper refreshes routing table, makes the gatekeeper of this subordinate recover to support this business again.The gatekeeper of subordinate starts the detecting timer after receiving higher level gatekeeper's affirmation message, whether the forbidden service call resource of regular check returns to can be utilized state, in case resource recovery, send resource with regard to RAI message to higher level gatekeeper and report message, this service call that this caller IP network section of request higher level gatekeeper restoration route is come is to this gatekeeper.Higher level gatekeeper receives the resource report message that the gatekeeper of subordinate sends, and sends out the request that acknowledge message is accepted the gatekeeper of subordinate for the gatekeeper of subordinate through legitimacy check back, and refreshes routing table, makes the gatekeeper of this subordinate recover this service call of supporting that this caller IP network section is next.
Because the present invention has introduced the IP address network segment, the IP address mask, gateway priority, gateway priority threshold values, service priority, the service priority threshold values, the gateway weight coefficient, gatekeeper's priority, nine configuration variables such as gatekeeper's weight coefficient, made full use of the existing call resources of gatekeeper---caller IP address, the gateway total bandwidth, the gateway remaining bandwidth, and make between the gateway gatekeeper by the resource reporting mechanism, share dynamic resource between the gatekeeper of the superior and the subordinate and take situation, so make the user route to the H.323 calling flow of gateway by custom strategies control very neatly from a plurality of gatekeepers control point, realize the balanced or unbalanced allotment of offered load according to actual conditions, reduce between the gateway effectively, between the gateway gatekeeper, the bandwidth that signaling message between the gatekeeper of the superior and the subordinate takies, realize preferred route and route stand-by, can be the master of different important level, called party client is formulated diverse routing policy, assurance routes to the good gateway of performance with the calling of Very Important Person, improve the connecting time that this class is called out, percept of call completed, the call voice quality is being that Very Important Person is offered high-quality service better.
Corresponding such group network topological structure as shown in Figure 1, there have the user to propose demand to be as follows:
1) the whole network business is 020,021,022,023,024,025,026,027,028,029,030,031 totally 12 business.
2) require the gateway under the secondary gatekeeper to provide backup traffic to share the gateway call flow between mutually.
3) require to provide between the secondary gatekeeper backup traffic to share gatekeeper's calling flow.
4) require can provide between the level-1 GK backup traffic sharing gatekeeper's calling flow, and backup when calling out between backup gateway the pro rate according to 4:1 call out.
5) calling that requires superior GK to come for the 202.102.13.* network segment provides special-purpose direct route with assurance call completing rate and voice calls quality, and 026 service call that this network segment is come must land by unique gateway.
6) require all have optimum routing gateway corresponding corresponding to each business.
Require all gateway bandwidth usages to reach at 90% o'clock and stop, and enable standby gateway to this gateway routing call.
Demand according to the user proposes customizes following collocation strategy:
1) superior GK
Configuration level-1 GK 1 and level-1 GK 2 are all supported 12 business such as 020,021,022,023,024,025,026,027,028,029,030,031.
The gatekeeper's service priority that disposes 6 business such as level-1 GK 1 correspondence 020,021,022,023,024,025,026 in gatekeeper's calling flow allocation list is 8, and gatekeeper's service priority of 6 business such as configuration level-1 GK 2 correspondences 026,027,028,029,030,031 is 8.
2) level-1 GK 1
4 business such as configuration secondary gatekeeper 1 support 020,021,024,025,4 business such as secondary gatekeeper 2 supports 022,023,020,021, secondary gatekeeper 3 supports 4 business such as 024,025,022,023, and h.323-configured gateway 1 and gateway 2 are all supported 12 business such as 020,021,022,023,024,025,026,027,028,029,030,031.
The gatekeeper's service priority that disposes 2 business such as secondary gatekeeper 1 correspondence 020,021 in gatekeeper's calling flow allocation list is 8, gatekeeper's service priority of 2 business such as configuration secondary gatekeeper 2 correspondences 022,023 is 8, and gatekeeper's service priority of 2 business such as configuration secondary gatekeeper 2 correspondences 024,025 is 8.
The service priority of 6 business such as h.323-configured gateway 2 correspondences 020,021,022,023,024,025 is 8 in the gateway call flow allocation list of the default network segment, the weight coefficient of 6 business such as gateway 1 correspondence 026,027,028,029,030,031 is 4, and the gateway priority threshold values of h.323-configured gateway 1 and gateway 2 is 90%.
The service priority of h.323-configured gateway 2 corresponding 026 business is 8 in the gateway call flow allocation list of the 202.102.13.* network segment, the weight coefficient of 6 business such as correspondence 027,028,029,030,031 is 4, the service priority threshold values of h.323-configured gateway 1 corresponding 026 business is 0%, and the gateway priority threshold values of h.323-configured gateway 1 and gateway 2 is 90%.
3) level-1 GK 2
The configuration of the configuration of level-1 GK 2 and level-1 GK 1 is similar, and different is in the gateway call flow allocation list of 202.102.13.* network segment correspondence, and the gateway priority threshold values of gateway 3 and gateway 4 is configured to 0%.
4) the secondary gatekeeper 1
H.323-configured gateway 5 and gateway 6 are all supported 4 business such as 020,021,024,025.
The service priority of h.323-configured gateway 5 corresponding 020 business is 8 in the gateway call flow allocation list of the default network segment, and the service priority of h.323-configured gateway 6 corresponding 021 business is 8, and the gateway priority threshold values of h.323-configured gateway 5 and gateway 6 is 90%.
5) the secondary gatekeeper 2
H.323-configured gateway 7 and gateway 8 are all supported 4 business such as 022,023,020,021.
The service priority of h.323-configured gateway 7 corresponding 022 business is 8 in the gateway call flow allocation list of the default network segment, and the service priority of h.323-configured gateway 8 corresponding 023 business is 8, and the gateway priority threshold values of h.323-configured gateway 7 and gateway 8 is 90%.
6) the secondary gatekeeper 3
H.323-configured gateway 9 and gateway 10 are all supported 4 business such as 024,025,020,021.
The service priority of h.323-configured gateway 9 corresponding 024 business is 8 in the gateway call flow allocation list of the default network segment, and the service priority of h.323-configured gateway 10 corresponding 025 business is 8, and the gateway priority threshold values of h.323-configured gateway 9 and gateway 10 is 90%.
7) reporting mechanism configuration
Enable between the gatekeeper, reporting mechanism between the gateway gatekeeper.
8) other
All gateways under the level-1 GK 2, gatekeeper's configuration are similar to the deploy content under the level-1 GK 1, repeat no more.
Be described below at the routing policy details that demand realized that proposes according to the user in the above-mentioned example:
1) the whole network has realized supporting 12 required business.
2) gateway under the secondary gatekeeper provides backup traffic to share the gateway call flow between having realized mutually.
For example, superior GK is received the route requests that comes from IP address 10.40.1.1, request provides route for 0202870001 calling, and superior GK finds that the service priority of level-1 GK 1 corresponding 020 business is higher, just preferentially route messages is forwarded to level-1 GK 1; Level-1 GK 1 finds that the service priority of secondary gatekeeper 1 corresponding 020 business is higher, just preferentially route messages is forwarded to secondary gatekeeper 1; Secondary gatekeeper 1 finds that gateway 5 supports 020 business and service priority higher, then with preferred gateways 5 as called gateway, finish route.
If number of calls is too much on the gateway 5, the bandwidth use amount surpasses 90%, and secondary gatekeeper 1 can route to gateway 6 with follow-up 020 service call, realizes the gateway route stand-by to 020 business.Bandwidth use amount on gateway 5 returns in 90%, and secondary gatekeeper 1 can re-route follow-up 020 service call to gateway 5.
If gateway 5 is found to exhaust corresponding to the call resources of 020 business, gateway 5 is notified secondary gatekeeper 1 with this situation by reporting mechanism between the gateway gatekeeper, secondary gatekeeper 1 can route to gateway 6 with follow-up 020 service call immediately, realizes the gateway route stand-by to 020 business.When recovering idle corresponding to the call resources of 020 business on the gateway 5, secondary gatekeeper 1 can re-route follow-up 020 service call to gateway 5.
3) realized to provide backup traffic to share gatekeeper's calling flow between the secondary gatekeeper.
Still be example with top calling routing procedure, if secondary gatekeeper 1 finds that gateway 5 and gateway 6 are all to 020 traffic overload, secondary gatekeeper 1 notifies level-1 GK 1 with this situation by reporting mechanism between the gatekeeper, level-1 GK 1 can route to secondary gatekeeper 3 with follow-up 020 service call, realizes the secondary gatekeeper route stand-by to 020 business.Secondary gatekeeper 3 calls out to gateway 9 and gateway 10 according to the dynamic routing 020 that concerns of 1:1.But when the resource recovery time spent that secondary gatekeeper 1 finds on gateway 5 and the gateway 6, by reporting mechanism notice level-1 GK 1 between the gatekeeper, level-1 GK can re-route follow-up 020 service call to secondary gatekeeper 1 secondary gatekeeper 1 with this situation.
4) realized providing backup traffic to share gatekeeper's calling flow between the level-1 GK.
For example superior GK is received the route requests that comes from IP address 10.40.1.1, request provides route for 0292870001 calling, and before this, level-1 GK 2 has been found that its gateway of being had jurisdiction over down, gatekeeper all to 029 traffic overload, then level-1 GK 2 by reporting mechanism between the gatekeeper with this advisory superior GK.So superior GK can route to level-1 GK 1 with 029 follow-up service call, realize level-1 GK route stand-by to 029 business.And level-1 GK 1 will be called out to gateway 1 and gateway 2 according to the dynamic routing 029 that concerns of 4:1.Treat that superior GK obtains the notice of level-1 GK, but report that 029 service resources recovers the time spent, superior GK can re-route follow-up 029 service call to level-1 GK 2.
5) superior GK provides special-purpose direct route for the calling that the 202.102.13.* network segment comes, and 026 service call that this network segment is come provides unique gateway to land.
For example superior GK is received the route requests that comes from IP address 202.102.13.141, and asking provides route for 0292870001 calling.Superior GK finds that level-1 GK 2 reports that by reporting mechanism between the gatekeeper it wouldn't support to come all-calls from the 202.102.13.* network segment, then superior GK routes to level-1 GK 1 with this 029 service call, and level-1 GK 1 will come 029 to call out to gateway 1 and gateway 2 according to the dynamic routing 202.102.13.* network segment that concerns of 1:4.
Especially, receiving the 202.102.13.* network segment when level-1 GK 1 comes 026 to call out, level-1 GK 1 finds that gateway 1 is higher corresponding to the service priority of 026 business in the control table of 202.102.13.* network segment gateway call flow, and just 026 service call that all these network segments are come routes to gateway 1.If the situation of gateway 1 overload occurs, then the follow-up 026 calling meeting that comes from this network segment is all refused by superior GK, till gateway 1 resource recovery can be used.
6) all there is optimum routing gateway corresponding corresponding to each business.
The gateway, the gatekeeper that are had jurisdiction over for 1 time with level-1 GK are example, the optimum routing gateway of 020 business is a gateway 5, the optimum routing gateway of 021 business is a gateway 6, the optimum routing gateway of 022 business is a gateway 7, the optimum routing gateway of 023 business is a gateway 8, the optimum routing gateway of 024 business is that the optimum routing gateway of gateway 9,025 business is a gateway 10.
7) all gateway bandwidth usages reach at 90% o'clock and stop to this gateway routing call, and enable standby gateway.
From top example as can be seen, this demand is met.
8) in addition, we also provide standby gateway for secondary gatekeeper business under level-1 GK.For example level-1 GK 1 is known when all secondary gatekeepers have been transshipped for 020 service call resource of the default network segment under it, level-1 GK 1 will all route to gateway 2 to 020 follow-up calling, thereby realize that secondary gatekeeper 020 business is had the standby gateway receipt of call under level-1 GK.
Claims (5)
1. calling flow control method comprises following treatment step:
The first step, the foreground gatekeeper calls out one the tunnel and carries out address translation, if the gatekeeper finds one or more gateways to support the called number prefix of required route, then changes step 2; If the gatekeeper finds one or more gatekeepers to support the called number prefix of required route, then change step 6;
Second step, seek the IP address network segment with source end IP matching addresses, read gateway call flow allocation list parameter that should the IP address network segment;
The 3rd step choose gateway priority height, and the gateway remaining bandwidth was not less than the gateway of gateway priority threshold values with the ratio of total bandwidth, if there are a plurality of gateways eligible, changeed step 4; If the gatekeeper can not find such gateway, then reply refuse information to Calling Side; If have only a gateway eligible, call signaling address that then will this qualified gateway replies to the caller gateway;
The 4th step according to the important level of called service, preferentially routed to the good gateway of performance with important service call, and non-important service call is preferentially routed to some gateway of poor-performing; If there are a plurality of gateways eligible, change step 5; If the gatekeeper can not find qualified gateway, then reply refuse information to Calling Side; If have only a gateway eligible, call signaling address that then will this qualified gateway replies to the caller gateway;
The 5th step, the gatekeeper according between gateway by the determined proportionate relationship of the professional weight coefficient of correspondence, adopt dynamic load share of command algorithm based on number of calls, realize dynamically distributing calling according to user-defined proportionate relationship between a plurality of gateways;
In the 6th step, the actual conditions according to existing gatekeeper institute supporting business preferentially route to the gatekeeper nearest apart from the called subscriber geographical position with service call; If can not find qualified gatekeeper, then reply refuse information to Calling Side; If filter through service priority, still have a plurality of gatekeepers eligible, then change step 7;
The 7th step, the gatekeeper according between the gatekeeper by the determined proportionate relationship of the professional weight coefficient of correspondence, adopt dynamic load share of command algorithm based on number of calls, realize dynamically distributing calling according to user-defined proportionate relationship between a plurality of gatekeepers.
2. calling flow control method according to claim 1 is characterized in that, also comprises following treatment step:
When a certain moment gateway discovery is directed to certain specific transactions, when the resource on this gateway can not be supported more calling, gateway was reported message by sending resource to the registration gatekeeper, and the temporary transient road closed to passage of request gatekeeper is called out to this gateway by this specific transactions;
The gatekeeper receives the resource report message that gateway is sent, and sends out the request that acknowledge message is accepted gateway through legitimacy check back to gateway, and refreshes routing table, makes this gateway temporarily not support this specific transactions; Simultaneously, the gatekeeper starts a timer at this specific transactions, reports message when the resource to should specific transactions that this timer expiry does not receive still that gateway sends, and then the gatekeeper refreshes routing table, makes this gateway recover to support this specific transactions again;
Gateway starts the detecting timer after receiving gatekeeper's affirmation message, whether the forbidden specific transactions call resources of regular check returns to and can utilize state, in case resource recovery sends resource with regard to RAI message to the registration gatekeeper and reports message, this specific transactions of request gatekeeper restoration route is to this gateway;
The gatekeeper receives the resource report message that gateway is sent, and sends out the request that acknowledge message is accepted gateway through legitimacy check back to gateway, and refreshes routing table, makes this gateway recover this specific transactions of support.
3. calling flow control method according to claim 1 is characterized in that, also comprises following treatment step:
When a certain moment gatekeeper of subordinate finds to be directed to the specific transactions that certain caller IP network section is come, when the resource on this gatekeeper can not be supported more calling, the gatekeeper sends resource to higher level gatekeeper and reports message, and this specific transactions that the temporary transient road closed to passage of request higher level gatekeeper is come by caller IP network section is called out to this gatekeeper;
Higher level gatekeeper receives the resource report message that the gatekeeper of subordinate sends, and sends out the request that acknowledge message is accepted the gatekeeper of subordinate for the gatekeeper of subordinate through legitimacy check back, and refreshes routing table, makes the gatekeeper of subordinate temporarily not support this next specific transactions of caller IP network section to call out; Simultaneously, higher level gatekeeper starts a timer at this specific transactions, report message when the resource to should specific transactions that this timer expiry does not receive still that the gatekeeper of subordinate sends, then higher level gatekeeper refreshes routing table, makes the gatekeeper of subordinate recover to support this specific transactions again
The gatekeeper of subordinate starts the detecting timer after receiving higher level gatekeeper's affirmation message, whether the forbidden specific transactions call resources of regular check returns to and can utilize state, in case resource recovery, send resource with regard to RAI message to higher level gatekeeper and report message, this specific transactions that request higher level gatekeeper restoration route caller IP network section is come is called out to this gatekeeper;
Higher level gatekeeper receives the resource report message that the gatekeeper of subordinate sends, and sends out the request that acknowledge message is accepted the gatekeeper of subordinate for the gatekeeper of subordinate through legitimacy check back, and refreshes routing table, makes the gatekeeper of subordinate recover to support this next specific transactions of caller IP network section to call out.
4. calling flow control method according to claim 1 is characterized in that, searching specifically may further comprise the steps with the IP address network segment of source end IP matching addresses in the described step 2:
At first the non-default ip address network segment mask in end IP address, source and the allocation list is done and computing, the gained result is if the IP address network segment that equals in the allocation list promptly is judged to coupling;
If find the IP address network segment of coupling, the gatekeeper reads gateway call flow allocation list parameter that should the IP address network segment;
Otherwise gatekeeper's program reads the gateway call flow allocation list parameter corresponding to the acquiescence network segment.
5. according to claim 1 or 4 described calling flow control methods, it is characterized in that the matching process in the described step 2 adopts the most accurate matching principle.
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| CN102158907B (en) * | 2010-02-12 | 2013-01-23 | 华为技术有限公司 | Priority service processing method, device and system |
| CN102833166B (en) * | 2012-08-28 | 2017-02-08 | 广东欧珀移动通信有限公司 | Method and device for data flow distribution and mobile communication terminal |
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| CN1479512A (en) | 2004-03-03 |
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