CN1567813A - Authentification method between gateway exchange networks of digital program controlled exchanger - Google Patents
Authentification method between gateway exchange networks of digital program controlled exchanger Download PDFInfo
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Abstract
The invention is a method of identifying the rights between the digital program-controlled exchanger gate local-area networks, defining calling user, calling character crown or incoming relay group as a calling call-limiting group, where the three has the same call-limiting attribute, and defining the called character crown, called user or outgoing relay group as a called call-limiting group and defining the call-limiting relationship between the calling and called call-limiting; as identifying the right, firstly discriminating different calling numbers on the same incoming relay group; then analyzing right and wrong name lists according the call-limiting relationship and as outgoing the rely, able to identify the right. It can identify single user and set different calling attributes for different calling numbers of different relay groups and right-identification exchange database is stored on inbuilt server plate (ISP) of the exchanger, increasing right-identifying capacity, increasing right-identifying efficiency and making service data simple to set and convenient to maintain.
Description
Technical field
The present invention relates to telephonic communication, relate in particular to the method for authentication between a kind of digital SPC exchange gateway exchange network.
Background technology
Since telecommunications and mobile split-off, the north and south telecommunication split, and new telecommunications, new Netcom, China Mobile and UNICOM have become domestic main telecom operators.Along with China's entry into the WTO, gradually relax control in telecom operation market, also can constantly have other operators to enter field of telecommunications, the trend of the times of interconnecting between each operator.Gateway exchange is to realize the tie-point that communication network interconnects between each telecom operators between net; be " crossroad " that connects different operators; the gateway exchange authentication is that each operator realizes interconnecting, the critical function of inter-network settlement, balanced traffic; authentication functions is being undertaken " communication bodyguard " and " traffic lights " responsibility; tackle illegal, irrational calling; guarantee the normal traffic of each operator by regular unimpeded shunting, reduce the inter-network settlement dispute.
Be illustrated in figure 1 as gateway exchange networking schematic diagram, the gateway exchange of the A of operator is responsible for traffic tandem with the B of operator, C, D in Home Network, simultaneously with the traffic of other operators of Home Network customer call respectively tandem in the B of operator, C, D network.
The following function of gateway exchange authentication specific implementation:
1) calling authorization is the user who differentiates other carrier networks, whether has the right to use the affiliated telecom operators' network of this gateway exchange, carries out call proceeding, uses the user of present networks to tackle for having no right;
2) inquire about this subscriber data according to " rear subscriber number ", determine whether this user has the right to use the specific business of Home Network.For the business that does not allow to use, the Home Network gateway exchange is refused its call proceeding request in the mode of recorded announcement;
3) calling number transmits between the standard net, and illegal and invalid calling number makes a call between the interception net.
Industry prior art scheme generally realizes by " call source analysis " and limit calling function:
1) at gateway exchange the relaying of different operators is defined as different call source;
2) to each call source definition discrimination group number;
3) number long scope of the legal calling number of definition in discrimination group number stipulates that promptly The Minimum Number Length and maximum number are long;
4) black and white lists of definition calling number;
5) black and white lists of definition called prefix;
6) limit between the definition calling and called is exhaled relation.
The calling number of supposing the B of operator all is the numbers of 139 beginnings, number long is necessary for 11, and then the above method for authenticating by the A of operator gateway exchange can prevent other caller prefixes of the B of operator and the network that the long calling number of other numbers enters the A of operator effectively.
If the calling number of the B of operator and number long all correct, gateway exchange determines according to the limit of the calling and called relation of exhaling whether this calling allows to continue.
There is following shortcoming in prior art:
1) be defined on the call source owing to caller number discrimination, and a plurality of trunk groups of each call source definable, the granularity that number is screened is too extensive, and different caller attributes can't be set for the different calling numbers of different trunk groups.
2) prior art is exhaled by the limit of black and white lists and is realized the network utility authentication, at different calling numbers a plurality of business are carried out authentication if need between net, to cause exchange data complicated unusually, the database of safeguarding this bulky complex is difficulty very, careless slightlyly just might cause service disconnection.For example, be respectively professional A and professional B,, need to distinguish following four kinds of situations authorization data is set if Home Network will carry out authentication to these two business at different calling numbers if open two business between net:
A, this mesh portions calling number allow to use simultaneously professional A and professional B;
B, this mesh portions calling number allow to use professional A, do not allow to use professional B;
C, this mesh portions calling number allow to use professional B, do not allow to use professional A;
D, this mesh portions calling number do not allow to use professional A and professional B.
Promptly for above A, two kinds of business of B need that all calling numbers are divided into four classes and carry out authentication, at a calling number attendant many limits will be set and exhale data that this number is carried out authentication.Like this, if open 10 kinds when professional between net, according to different combinations, calling number will be divided into 1024 classes at most, and every class calling number has different service authoritys, like this, and the database maintenance very difficulty of getting up.
3) call source data of the prior art, caller number discrimination data are distributed in each Service Processing Module of exchange, be subjected to business module capacity and limited processing ability, the calling number number that carries out authentication can't reach 100,000, and the authentication process inefficiency, can increase the load of business module when data volume is big.In addition, when the authorization data dilatation, all business modules must the overall situation load, professional can the interruption several minutes.
4) if need the Large Volume Data authentication, prior art realizes by plug-in intelligent server.And this mode need change existing telecommunications network architecture, and cost is too high; Need independent webmaster, safeguard complicated; Server platform stability is subjected to the influence of the platform peripheral hardware (hard disk, CD) and the network equipment (netting twine, hub); And search efficiency is influenced by hard disk speed, network speed.
Summary of the invention
Technical problem to be solved by this invention is: it is extensive to overcome between existing net critical point authentication granularity, switch database is difficult in maintenance, and the authentication capacity is little, shortcomings such as authentication process efficient is low, provide a kind of with the authentication granularity refinement to unique user, the different calling numbers that can be different trunk groups is provided with the method for authentication between the gateway exchange network of different caller attributes, and can increase the authentication capacity, improves authentication efficient, and makes that the authorization data storehouse is easy to maintenance.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
The method of authentication between this digital SPC exchange gateway exchange network, it is characterized in that: calling subscriber, caller prefix or the incoming trunk group that will have identical call barring attribute on switch are defined as a caller limit and exhale group, called prefix, called subscriber or the outgoing trunk group that will have identical call barring attribute are defined as a called limit and exhale group, and definition calling and called limit exhales the limit between the group to exhale relation, carries out authentication as follows:
A, treating to define discrimination group number on the incoming trunk group of authentication, screening function code, the different calling numbers on the same incoming trunk group is correspondingly being screened according to the calling number definition that discrimination group number and Incoming are sent here;
B, carry out call proceeding to allowing to enter gateway exchange by the calling number of screening, gateway exchange is analyzed the calling and called number, determines that respectively the calling and called limit under the calling and called number is exhaled group;
C, carry out the black and white lists analysis according to the calling and called limits limit relation of exhaling between the group of exhaling, after the black and white lists analysis was passed through, this called out route selection striking out.
In the described steps A, can screen function code, forbid the all-calls of this calling number according to the calling number definition that discrimination group number and Incoming are sent here.
In the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, to entering the long examination of the calling number number of carrying out of trunk group, the calling number length of sending here must be more than or equal to the The Minimum Number Length of default, and the maximum number smaller or equal to default is long, otherwise forbids this calling number incoming call.
In the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, conversion calling subscriber's caller restricted group number attribute is made different limits to the different calling numbers on the same incoming trunk group and is exhaled processing.
In the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, the service authority of definition calling number, according to this service authority, switch generates the black and white lists of calling subscriber and related service automatically.
Among the described step B, switch detects the incoming trunk group that makes a call, exhale group by the caller limit that the inquiry Trk Group Data table obtains under this trunk group, also can by discrimination group number with screen the caller limit that function code obtains different calling numbers under this trunk group and exhale group; Switch is analyzed called number, inquires about called limit according to called prefix, number, service attribute and exhales the group table, determines that the limit under called is exhaled group.
Switch can define the calling and called limit and exhale group black and white lists, Calling Side white list can call out all users of callee side, and the Calling Side blacklist can only be called out the callee side white list; Switch can also the common restricted group number of self-defined calling and called, and common group of self-defining Calling Side also can be according to other common group of inter-group call barring indicating call callee side except can calling out the callee side white list.
Can be to set up exchange authorization data storehouse through the office direction calling number of gateway exchange, this exchange authorization data stock is placed on the built-in services device veneer (ISP) of switch.
Among the described step C, after the black and white lists analysis is passed through,, then exhale definite this caller limit of the group and the calling relation of out-trunk group to exhale group whether to have the right to select this trunk group striking out according to the caller limit if selected outgoing trunk group has defined restricted group number; If have the right, then by this trunk group striking out; If have no right, this call failure then.
Described calling and called limit is exhaled between the group or the caller limit is exhaled between group and the out-trunk group, and the relation of calling out between group can be set on a time period; If the time period is not set, this limit exhales relation with continuously effective.
Beneficial effect of the present invention is: the authentication functions among the present invention can be provided with different examination attributes at all calling numbers of each operator, call barring attribute, charging property and service authority, the authentication granularity refinement is arrived single user, all calling subscriber of operator data functions of management have been realized at gateway exchange, different caller attributes can be set for the different calling numbers of different trunk groups, pass through caller number discrimination, can define the calling service authority easily, system generates the corresponding authentication limit automatically and exhales relation, business datum is provided with simply, and the authorization data storehouse is easy to maintenance; And authentication functions realizes that by the built-in services device veneer (ISP) of switch need not change networking structure, the capacity of authentication is big, efficient is high.Because built-in services device veneer (ISP) is independent mutually with the exchange service processing module, when the authorization data dilatation, can not influence the processing of exchange service module, can not cause service disconnection.
Adopt built-in services device veneer, compared following advantage with adopting plug-in intelligent server:
(1) cost aspect: built-in mode adopts the built-in veneer of switch to realize, realizes that cost is low, does not change existing telecommunications network architecture; And external mode is invested greatly, needs plug-in server.
(2) fail safe aspect: built-in mode adopts the inner link networking, the networking security height; Simultaneously owing to be to realize that by increasing the switch veneer stability is higher than external mode far away; External mode adopts the networking of local area network (LAN) mode, and internet security is relatively low, and server platform stability is subjected to the influence of the platform peripheral hardware (hard disk, CD) and the network equipment (netting twine, hub).
(3) safeguard convenience: built-in mode is by switch webmaster centralized maintenance data, and external mode server needs independent webmaster, safeguards complicated.
(4) operational efficiency: it is mutual that built-in mode is simple switch inside story, and speed is fast; And external mode needs switch and external server to handle according to related protocol, and the efficient of communication is not high, even the disposal ability of server improves the restriction that also is subjected to communication performance bottleneck.
Authentication techniques proposed by the invention can be tackled the user who haves no right to use present networks, provide unique network utility authority at different calling subscribers, calling number transmits between the standard net, realize between the different operators, disbursement and sattlement between the net between the different customers of same operator, thereby improve the ability that interconnects between the telecom operators, provide sound assurance for each operator interconnects, thereby guaranteed users' communication quality.
The present invention also can support time attribute when the call proceeding authentication, switch can be limit automatically in the different time period of every day and exhale or allow different business, can distribute according to traffic, carries out authentication every day on a time period automatically, realizes that the traffic dynamic equalization distributes.
Description of drawings
Fig. 1 is a gateway exchange networking schematic diagram;
Fig. 2 exhales group calls in several to concern schematic diagram for calling and called limit of the present invention;
Fig. 3 is the calling indexical relation schematic diagram of black and white lists of the present invention.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
The digital SPC exchange method for authenticating that the present invention introduced comprises caller number discrimination and black and white lists function, to have the calling subscriber/caller prefix of identical call barring attribute or incoming trunk group on switch is defined as a caller limit and exhales group, to have the called prefix/called subscriber of identical call barring attribute or outgoing trunk group and be defined as a called limit and exhale group, and definition calling and called limit exhales the limit between the group to exhale relation.According to concrete business demand, can go in relaying, the handshaking procedure and call out out three phases and carry out authentication what call out, covered the overall process of calling out.
1) goes into the examination that trunk side carries out calling number
Treating to define discrimination group number on the trunk group of authentication, discrimination group number is corresponding one by one with trunk group, screen function code according to the calling number definition that discrimination group number and Incoming are sent here, can screen the different calling numbers under the same trunk group by screening function code, define different examination function codes, can select to realize following difference in functionality:
Function one---forbid incoming call: can select this function, forbid the all-calls of this calling number.Can tackle invalid calling number by caller number discrimination and enter relevant trunk group, an effective calling number must possess following condition simultaneously:
(1) calling number is number long holds consistent with the addressness quality guarantee;
(2) whether number is masked as 0 (being that number is complete) fully;
(3) presenting the expression language was 0 or 1 (promptly present permission or present restriction);
(4) number length is non-vanishing.
Do not satisfy the calling number of one of above-mentioned condition and can forbid incoming call by this function.
Function two---caller number discrimination: select this function can allow calling number to enter trunk group, but will the number of examination long.The calling number length of sending here must be more than or equal to " The Minimum Number Length " of default, and smaller or equal to " maximum number is long " of default, otherwise forbid this calling number incoming call.If The Minimum Number Length, maximum number length are defined as 255, expression unreserved seating progress row is screened.
Function three---conversion caller attributes: if desired the calling number of going on the relaying is done special charging, routing, failure processing, can select this function, conversion calling subscriber's call source code, charging source code, restricted group number, like this, different calling numbers under the same trunk group can be defined as different caller limits and exhale group, different call barring attributes is set, thereby can sets up complete Service Database for all calling numbers of each innings.
Function four---caller number discrimination and conversion caller attributes: select this function, not only can the number of examination long but also can the conversion caller attributes.
If desired the different calling numbers on the incoming trunk group is made black and white lists, can select the caller restricted group number of function three or function four definition different calling numbers for use.
Function five---select this function definable main call number business authority.The attendant only need indicate the service authority of calling number, and switch generates the black and white lists of calling subscriber and related service automatically according to calling subscriber's authority, generates the corresponding authentication limit automatically and exhales relation, and like this, business datum is provided with simply, and is easy to maintenance.Definition user's not in the know service authority on gateway exchange is the same easy with end office switch management local subscriber's long-distance authority.
2) carry out the black and white lists analysis in the handshaking procedure
If caller number discrimination passes through, then allow this calling to enter gateway exchange and continue; If do not pass through, this call failure then.
Switch is received when playing a game the incoming call of initiating, and detects the incoming trunk group that makes a call, and the caller limit that can obtain this trunk group by the inquiry Trk Group Data table exhales group, this limit to exhale group to comprise all calling subscribers of trunk group Incoming from then on; Can and screen function code and determine that the caller of the different calling numbers same trunk group is under limit and exhale group according to discrimination group number.Switch is analyzed called number, exhales the group table to determine called restricted group number according to called prefix (number), service attribute, the called limit of inquiry, and switch carries out the black and white lists analysis according to the calling and called limit limit relation of exhaling between the group of exhaling then.
As shown in Figure 2, caller limit exhale group (Calling Side group among the figure), called limit exhale group (callee side group among the figure), in conjunction with call time by the intergroup relation table flexibly definition call blocking or permission each other concern.
(1) the caller limit is exhaled the group definition
To have the calling subscriber/caller prefix of identical call barring attribute or trunk group on switch is defined as the caller limit and exhales group, the caller limit exhales the group definable on trunk group, also definable is to the concrete calling number/prefix that comes from trunk group, a calling subscriber or the corresponding unique caller restricted group number of incoming trunk group.
If distinguish different caller call barring attributes on the same trunk group, by above-mentioned caller number discrimination function three or four change caller restricted group numbers, the call barring attribute of the different calling numbers under this trunk group is carried out refinement, the different limit of different caller definition on the same incoming trunk group is exhaled group.
(2) called limit is exhaled the group definition
Exhale group by the called limit of corresponding command definition on switch, called prefix, called subscriber or the outgoing trunk group that will have identical call barring attribute are defined as called limit and exhale group, and the corresponding unique called limit of called prefix/user or outgoing trunk group is exhaled group.
If increase blacklist or white list, need not import group number, only need the input called number to get final product, blacklist group number and white list group number are set by internal system, and system default restricted group number 60001 is that the blacklist limit is exhaled group, the 60002nd, the white list limit is exhaled group.
(3) by the period relation of calling out between group is set
By calling out indication between group, the limit between definition Calling Side group and the callee side group is exhaled relation, and permission is still called out in call blocking just.If be provided with the time period, then the calling of definition concerns can only work (can define four time periods in one day) in intraday certain time period; If the time period is not set, this limit exhales relation with continuously effective.
Black and white lists is exhaled by definition calling and called limit and is called out indication between group and group and represent the relation of calling out, switch of the present invention not only can define the calling and called limit and exhale the group black and white lists, can also self-defined calling and called restricted group number (being common group), thus can realize neatly that different callers allows or limit is exhaled different called.As shown in Figure 3, the Calling Side white list can be called out all users of callee side, and the Calling Side blacklist can only be called out the callee side white list; Common group of Calling Side also can be according to other common group of inter-group call barring indicating call callee side except can calling out the callee side white list.
3) out-trunk authentication
After the black and white lists analysis is passed through, this calls out the route selection striking out, if selected outgoing trunk group has defined restricted group number, then still need to exhale group and the calling relation (intergroup relation table) between the out-trunk group to determine that this time period, this caller are limit and exhale group whether to have the right to select this trunk group striking out according to the caller limit; If have no right striking out, this call failure then.
The present invention can be provided with different examination attribute, call barring attribute, charging property and service authority at all calling numbers on the trunk group, the authentication granularity refinement is arrived single user, can to through the owning administration of gateway exchange to calling number set up database, the exchange authorization data stock be placed on the built-in services device veneer (ISP) of switch.The ISP plate adopts the above rank chip design of PII, realizes high-capacity and high-speed data query business.When adopting the 64M internal memory, the memory cost of a record is 50BYTE, and every block of plate is supported ten thousand data of 64M/50=100, and the authentication capacity reaches 1,000,000 more than, and internal memory can also expand.Every block of plate is supported 900 times/second inquiry velocity, supports the inquiry velocity more than 6400K/ hour during a pair of plate load sharing, has guaranteed that authentication functions can access real-time processing under large-capacity data.
Claims (10)
1, the method for authentication between a kind of digital SPC exchange gateway exchange network, it is characterized in that: calling subscriber, caller prefix or the incoming trunk group that will have identical call barring attribute on switch are defined as a caller limit and exhale group, called prefix, called subscriber or the outgoing trunk group that will have identical call barring attribute are defined as a called limit and exhale group, and definition calling and called limit exhales the limit between the group to exhale relation, carries out authentication as follows:
A, treating to define discrimination group number on the incoming trunk group of authentication, send according to discrimination group number and Incoming
Function code is screened in the calling number definition that comes, to the different callers on the same incoming trunk group
Number is correspondingly screened;
B, carry out call proceeding, gateway exchange to allowing to enter gateway exchange by the calling number of screening
The calling and called number is analyzed, the master under definite respectively calling and called number,
Called limit is exhaled group;
C, carry out black and white lists analysis, black and white according to the calling and called limits limit relation of exhaling between the group of exhaling
After the list analysis was passed through, this called out the route selection striking out.
2, the method for authentication between digital SPC exchange according to claim 1 gateway exchange network is characterized in that: in the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, forbid the all-calls of this calling number.
3, the method for authentication between digital SPC exchange according to claim 1 gateway exchange network, it is characterized in that: in the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, to entering the long examination of the calling number number of carrying out of trunk group, the calling number length of sending here must be more than or equal to the The Minimum Number Length of default, and the maximum number smaller or equal to default is long, otherwise forbids this calling number incoming call.
4, the method for authentication between digital SPC exchange according to claim 1 gateway exchange network, it is characterized in that: in the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, conversion calling subscriber's caller restricted group number attribute is made different limits to the different calling numbers on the same incoming trunk group and is exhaled processing.
5, the method for authentication between digital SPC exchange according to claim 1 gateway exchange network, it is characterized in that: in the described steps A, can screen function code according to the calling number definition that discrimination group number and Incoming are sent here, the service authority of definition calling number, according to this service authority, switch generates the black and white lists of calling subscriber and related service automatically.
6, according to the method for authentication between claim 3,4 or 5 described digital SPC exchange gateway exchange networks, it is characterized in that: among the described step B, switch detects the incoming trunk group that makes a call, exhale group by the caller limit that the inquiry Trk Group Data table obtains under this trunk group, also can by discrimination group number with screen the caller limit that function code obtains different calling numbers under this trunk group and exhale group; Switch is analyzed called number, inquires about called limit according to called prefix, number, service attribute and exhales the group table, determines that the limit under called is exhaled group.
7, the method for authentication between digital SPC exchange according to claim 6 gateway exchange network, it is characterized in that: switch can define the calling and called limit and exhale the group black and white lists, the Calling Side white list can be called out all users of callee side, and the Calling Side blacklist can only be called out the callee side white list; Switch can also the common restricted group number of self-defined calling and called, and common group of self-defining Calling Side also can be according to other common group of inter-group call barring indicating call callee side except can calling out the callee side white list.
8, the method for authentication between digital SPC exchange according to claim 7 gateway exchange network, it is characterized in that: can be to set up exchange authorization data storehouse through the office direction calling number of gateway exchange, this exchange authorization data stock is placed on the built-in services device veneer (ISP) of switch.
9, the method for authentication between digital SPC exchange according to claim 1 gateway exchange network, it is characterized in that: among the described step C, after the black and white lists analysis is passed through, if selected outgoing trunk group has defined restricted group number, then exhale definite this caller limit of the group and the calling relation of out-trunk group to exhale group whether to have the right to select this trunk group striking out according to the caller limit; If have the right, then by this trunk group striking out; If have no right, this call failure then.
10, according to the method for authentication between claim 1 or 7 described digital SPC exchange gateway exchange networks, it is characterized in that: described calling and called limit is exhaled between the group or the caller limit is exhaled between group and the out-trunk group, can be provided with on a time period to call out between group to concern; If the time period is not set, this limit exhales relation with continuously effective.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031450385A CN100440777C (en) | 2003-06-18 | 2003-06-18 | Authentification method between gateway exchange networks of digital program controlled exchanger |
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| CNB031450385A CN100440777C (en) | 2003-06-18 | 2003-06-18 | Authentification method between gateway exchange networks of digital program controlled exchanger |
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| CN1567813A true CN1567813A (en) | 2005-01-19 |
| CN100440777C CN100440777C (en) | 2008-12-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101351054A (en) * | 2008-09-16 | 2009-01-21 | 魏然 | Method for limiting incoming call |
| CN101437248A (en) * | 2008-12-18 | 2009-05-20 | 中国移动通信集团浙江有限公司 | Method for monitoring false calling number between nets |
| WO2010022632A1 (en) * | 2008-08-28 | 2010-03-04 | 中兴通讯股份有限公司 | System and method for forwarding and filtering multimedia messages between networks |
| WO2019179053A1 (en) * | 2018-03-22 | 2019-09-26 | 平安科技（深圳）有限公司 | Voice trunk line access method and device, and mobile terminal and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684867A (en) * | 1994-11-03 | 1997-11-04 | Lucent Technologies Inc. | Remote data access for operator assistance calls |
| US5859967A (en) * | 1996-07-09 | 1999-01-12 | Faxsav Incorporated | Method and system for relaying communications from authorized users |
| JP2002007255A (en) * | 2000-06-27 | 2002-01-11 | Nec Corp | Method for managing distribution destination of downloading |
-
2003
- 2003-06-18 CN CNB031450385A patent/CN100440777C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010022632A1 (en) * | 2008-08-28 | 2010-03-04 | 中兴通讯股份有限公司 | System and method for forwarding and filtering multimedia messages between networks |
| CN101351054A (en) * | 2008-09-16 | 2009-01-21 | 魏然 | Method for limiting incoming call |
| CN101437248A (en) * | 2008-12-18 | 2009-05-20 | 中国移动通信集团浙江有限公司 | Method for monitoring false calling number between nets |
| WO2019179053A1 (en) * | 2018-03-22 | 2019-09-26 | 平安科技（深圳）有限公司 | Voice trunk line access method and device, and mobile terminal and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100440777C (en) | 2008-12-03 |
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