CN100397846C - Method for supporting different port marker by medium gateway controller - Google Patents

Method for supporting different port marker by medium gateway controller Download PDF

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Publication number
CN100397846C
CN100397846C CNB031552056A CN03155205A CN100397846C CN 100397846 C CN100397846 C CN 100397846C CN B031552056 A CNB031552056 A CN B031552056A CN 03155205 A CN03155205 A CN 03155205A CN 100397846 C CN100397846 C CN 100397846C
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endpoint
media gateway
decoding
encoding
code encoding
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CN1585386A (en
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张涛
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The present invention relates to a method for supporting different endpoint marks by a media gateway controller. The method adopts the mode that the encoding and decoding information of endpoint marks in various media gateways is respectively placed in a media gateway controller in a matching mode; when the media gateway controller needs to analyze and identify the endpoint marks in received commands or generate the endpoint marks in commands to be transmitted, the corresponding processing operation is carried out according to the matched encoding and decoding information. The realization of the present invention makes the media gateway controller compatible with the encoding and decoding rules of different endpoint marks adopted by every media gateway which is communicated with the media gateway controller, the reliable interconnection of the media gateway controller and every media gateway is guaranteed, and the media gateway controller can conveniently identify the endpoint marks represented by universal matched endpoint marks.

Description

Media Gateway Controller is supported the method for different Endpoint IDs
Technical field
The present invention relates to network communications technology field, relate in particular to the method that a kind of Media Gateway Controller is supported different Endpoint IDs.
Background technology
In network service, MGCP is a kind of principal and subordinate's control protocol, be the operation of Media Gateway Controller by MGCP control media gateway, described MGCP generally includes MGCP agreement (MGCP), H248 agreement (MGCP) and NCS agreement (based on network call signaling) etc.The core concept of MGCP is that the processing with Media Streams such as professional control procedure such as calling and professional related voice streams separates, and promptly Media Gateway Controller one side is finished professional control and media gateway one side is finished Media Stream and handled.Like this, can just can customize miscellaneous service fast by only revising Media Gateway Controller one side.
Usually Media Gateway Controller need be controlled a plurality of media gateway, for guaranteeing professional normal process process, Media Gateway Controller need according to each media gateway based on each end points under the different media gateway of the Endpoint ID identification of MGCP.The Endpoint ID of described MGCP comprises: refer to end points (Endpoint) sign, terminal (Termination) sign in the H248 agreement and end points (Endpoint) sign in the NCS agreement etc. in the MGCP agreement, the encoding and decoding rule of each Endpoint ID is by media gateway oneself definition, determines corresponding Endpoint ID encoding and decoding rule according to the MGCP that is adopted usually.
Endpoint ID in the MGCP is according to the recommendation of agreement, generally all support to be divided into many levels, Endpoint ID: aaln/＜unit# for example 〉/#, wherein, aaln is the endpoint type character string,＜unit#〉represent the plate of this Endpoint ID in gateway number, # represents the numbering of this Endpoint ID at this plate, if endpoint identifier is aaln/1/1 so, then display plate number is the port one on 1.Simultaneously the agreement regulation can be used wildcard on Endpoint ID at all levels, for example the wildcard end points aaln/1/ who divides level above the basis *, represent that this media gateway upper plate number is all end points on 1.Endpoint ID has text and two kinds of coding rules of binary system, and for example aaln/1/1 is the text code of end points name, and 10101 is the binary coding rule of end points name.All the time will be converted into a binary Endpoint ID at the Endpoint ID of Media Gateway Controller and media gateway Chinese version handles.
Can have a plurality of media gateway below the Media Gateway Controller, each media gateway can insert a plurality of end points again, adopts the Endpoint ID difference between each end points.The encoding and decoding rule of described Endpoint ID is determined by media gateway oneself usually.Because Endpoint ID is a fundamental in the MGCP, the encoding and decoding rule of the Endpoint ID of all media gateway that Media Gateway Controller must compatible its control, otherwise can't carry out the mutual of information.
For example, as shown in Figure 1, the encoding and decoding rule of the Endpoint ID of media gateway 1 is aaln/＜unit# 〉/#, this media gateway Endpoint ID (being the end points title) may be aaln/1/1 so, and the encoding and decoding of the Endpoint ID of media gateway 2 rule is A#, and this media gateway end points name may be A1 so.If Media Gateway Controller can only be discerned the Endpoint ID encoding and decoding rule of media gateway 1, and the Endpoint ID naming rule of nonrecognition media gateway 2, then will cause can't and 2 of media gateway carry out proper communication; Suppose, Media Gateway Controller requires the terminal A 1 of media gateway 2 to carry out an order, because the Endpoint ID encoding and decoding rule of incompatible media gateway 2, the Endpoint ID that is handed down to so in the order of media gateway 2 will be aaln/1/1, media gateway 2 will cause this order will carry out failure owing to not discerning Endpoint ID aaln/1/1 after receiving described order, equally, if Media Gateway Controller is received the notification command that media gateway 2 is sent, because Endpoint ID wherein is A#, also will can't discerns Endpoint ID A# and cause the command execution failure because of Media Gateway Controller.
For satisfying the needs of proper communication between Media Gateway Controller and media gateway, usually require in the network service, use identical Endpoint ID encoding and decoding rule with all media gateway that same Media Gateway Controller is communicated by letter, with avoid taking place because of can't discern Endpoint ID cause can't proper communication problem.Yet because the manufacturer of media gateway has a lot, so require in network service, all adopt the technical scheme of identical Endpoint ID encoding and decoding rule to be difficult to realize with same Media Gateway Controller communicating medium gateway.
Summary of the invention
The invention provides a kind of Media Gateway Controller and support the method for different Endpoint IDs, make different media gateway to determine corresponding Endpoint ID according to the needs of self, and all can be by the Media Gateway Controller compatibility to reach intercommunication.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of method of supporting different Endpoint IDs is applied to Media Gateway Controller, comprising:
A, dispose the Endpoint ID encoding and decoding rule of each media gateway;
B, according to the encoding and decoding rule of the Endpoint ID of each media gateway of configuration to the mutual order of media gateway in Endpoint ID carry out encoding and decoding and handle.
Described encoding and decoding rule comprises: the code encoding/decoding mode of Endpoint ID and corresponding coding/decoding information, and described step B comprises:
Determine to receive or order that to be sent and media gateway are mutual in the code encoding/decoding mode and the corresponding coding/decoding information of Endpoint ID, carry out the encoding and decoding processing according to the Endpoint ID in the mutual order of the code encoding/decoding mode of determining and corresponding coding/decoding information pair and media gateway.
The code encoding/decoding mode of described various Endpoint IDs comprises:
Endpoint ID is binary system code encoding/decoding mode or text code encoding/decoding mode.
When described configuration Endpoint ID was the binary system code encoding/decoding mode, described coding/decoding information comprised:
The binary bits figure place of Endpoint ID;
The number of the type of Endpoint ID;
The number of bits of the type of Endpoint ID reaches and begins bit and end bit position accordingly;
The value of the type of Endpoint ID;
The hierachy number that each type Endpoint ID comprises and the beginning bit of each level and end bit position, and the span of each level.
When described configuration Endpoint ID was the text code encoding/decoding mode, described coding/decoding information comprised:
Endpoint ID is converted into the number of bits of binary system Endpoint ID;
The number of the type of Endpoint ID;
The conversion in type of Endpoint ID is binary number of bits and begins bit and end bit position accordingly;
The text code value of the value of the type of Endpoint ID and the corresponding relation of binary coded value;
The binary-coded beginning bit and the end bit position of the hierachy number that same type Endpoint ID comprises and each level, and the span of each level;
The text code value of each level value and the corresponding relation of binary value.
Described step B comprises:
B1, determine with reception with the mutual order of media gateway or to be sent and the mutual relevant media gateway of order of media gateway;
B2, according to the code encoding/decoding mode of various Endpoint IDs of each media gateway of configuration, determine the code encoding/decoding mode of the Endpoint ID of described media gateway;
B3, the Endpoint ID with in the mutual order of media gateway that receives is carried out decoding processing according to the code encoding/decoding mode of determining and corresponding coding/decoding information; Or carry out the encoding process of the Endpoint ID in the mutual order of to be sent and media gateway according to the code encoding/decoding mode of determining and corresponding coding/decoding information.
Described step B1 comprises:
According to media gateway sign determine with reception with the mutual order of media gateway or to be sent and the mutual relevant media gateway of order of media gateway.
Code encoding/decoding mode that described basis is determined and corresponding coding/decoding information carry out decoding processing and comprise the Endpoint ID with in the mutual order of media gateway that receives:
Resolve reception by different level according to the code encoding/decoding mode of determining and corresponding coding/decoding information with the mutual order of media gateway in Endpoint ID, and determine the end points of described Endpoint ID correspondence.
The encoding process that code encoding/decoding mode that described basis is determined and corresponding coding/decoding information carry out the Endpoint ID in the mutual order of to be sent and media gateway comprises:
When Media Gateway Controller need be to the media gateway transmitting order to lower levels determined, carry out the encoding process of the Endpoint ID in the mutual order of to be sent and media gateway according to the code encoding/decoding mode of the Endpoint ID of the media gateway of determining of configuration and corresponding coding/decoding information.
Described Endpoint ID comprises:
End points Endpoint sign in the MGCP MGCP agreement;
Terminal Termination sign in the MGCP H248 agreement;
End points Endpoint sign in the based on network call signaling NCS agreement;
The encoding and decoding rule of described Endpoint ID comprises:
If what media gateway adopted is the H248 agreement, then the code encoding/decoding mode of Endpoint ID wherein is binary system code encoding/decoding mode or text code encoding/decoding mode;
If what media gateway adopted is MGCP agreement or NCS agreement, then the code encoding/decoding mode of Endpoint ID wherein is the text code encoding/decoding mode.
As seen from the above technical solution provided by the invention, the present invention has adopted code encoding/decoding mode and the corresponding coding/decoding information that disposes the Endpoint ID in the various media gateway in Media Gateway Controller respectively, when needs are resolved and discerned Endpoint ID or generate Endpoint ID, then handle accordingly according to the code encoding/decoding mode and the corresponding coding/decoding information of Media Gateway Controller configuration.Thereby make the encoding and decoding rule of the Endpoint ID that Media Gateway Controller is can compatible each media gateway different, to realize that Media Gateway Controller and each media gateway interconnect reliably, and can make Media Gateway Controller discern the represented Endpoint ID of Endpoint ID of wildcard easily, the Endpoint ID of described wildcard is used to represent one group of Endpoint ID.
Therefore, realization of the present invention, make Media Gateway Controller to discern comparatively easily and adopt the regular Endpoint ID that generates of different encoding and decoding, and when Media Gateway Controller need be to the media gateway transmitting order to lower levels, can generate the Endpoint ID that corresponding media gateway can be discerned according to the Endpoint ID encoding and decoding rule of each media gateway, guarantee the reliable communication between Media Gateway Controller and each media gateway effectively.
Description of drawings
Fig. 1 is the networking structure schematic diagram of Media Gateway Controller and media gateway;
Fig. 2 is the flow chart of method of the present invention;
Fig. 3 is the embodiment flow chart 1 of method of the present invention;
Fig. 4 is the embodiment flow chart 2 of method of the present invention.
Embodiment
Media Gateway Controller of the present invention supports that the core of the method for different Endpoint IDs is in order to be implemented in the different encoding and decoding rules of the Endpoint ID of compatible each media gateway in the Media Gateway Controller, thereby makes the media gateway that adopts different encoding and decoding rule end points Endpoint IDs all can carry out the mutual of information with Media Gateway Controller comparatively easily.Be the method that the present invention passes through the encoding and decoding rule of each media gateway Endpoint ID of configuration in Media Gateway Controller, shielded the otherness of the encoding and decoding rule of media gateway Endpoint ID.
At present, the code encoding/decoding mode that the encoding and decoding rule that media gateway adopts usually comprises may be summarized to be binary system code encoding/decoding mode and text code encoding/decoding mode two big classes, also have multiple different coding/decoding information under concrete binary coding mode or the text code mode, it is that 32, Endpoint ID length are the coding/decoding information of 24 or the like Endpoint IDs that binary coding mode as described can further include Endpoint ID length.The encoding and decoding rule that media gateway adopted is relevant with the MGCP that adopts usually, for example, if media gateway is used the H248 agreement, the encoding and decoding rule of corresponding Endpoint ID can be the binary system code encoding/decoding mode, also may be the text code encoding/decoding mode, if what media gateway was used is MGCP or NCS agreement, then the encoding and decoding rule of corresponding Endpoint ID is always the text code encoding/decoding mode.For binary system code encoding/decoding mode and text code encoding/decoding mode that compatible media gateway is used, Media Gateway Controller need be converted into the endpoint identifier of text binary endpoint identifier.
Specific implementation of the present invention may further comprise the steps referring to Fig. 2:
Step 20: the code encoding/decoding mode of the Endpoint ID that the configuration media gateway is used in Media Gateway Controller, the code encoding/decoding mode of the MGCP that promptly disposes each media gateway and adopted, or binary system code encoding/decoding mode, or the text code encoding/decoding mode, the code encoding/decoding mode of MGCP has been determined the code encoding/decoding mode of the Endpoint ID of respective media gateway;
Certainly, when Media Gateway Controller is only supported a kind of code encoding/decoding mode, also can not carry out the configuration of code encoding/decoding mode, and only configuration step 21 described coding/decoding informations promptly can satisfy corresponding requirement.
Step 21: the difference of the code encoding/decoding mode that uses according to MGCP that media gateway adopted, dispose the coding/decoding information of different code encoding/decoding mode correspondences, usually may the multiple concrete coding/decoding information of correspondence with a kind of code encoding/decoding mode;
If what media gateway was used is the binary system code encoding/decoding mode definition Endpoint ID of MGCP, then need dispose the information that comprises following content for the Endpoint ID of supporting the binary system code encoding/decoding mode:
1, the number of bits of Endpoint ID, i.e. the employed number of bits of configuration definition Endpoint ID, for example, disposing the number of bits that a media gateway Endpoint ID uses is 32, the bit that another media gateway Endpoint ID uses is 64;
2, the beginning bit of type number in the Endpoint ID and Endpoint ID type and end bit position;
Described type generally includes circuit types, RTP (RTP) type etc.;
The beginning bit of described Endpoint ID type and end bit position, the i.e. start bit and the stop bits of expression Endpoint ID type in the Endpoint ID; Definition according to MGCP, the end bit position of expression Endpoint ID type is the highest-order bit in the Endpoint ID in the Endpoint ID, the Endpoint ID that for example can dispose a media gateway always has 32, the beginning bit of expression endpoint type is 24, and the end bit position is 31;
3, the value of each endpoint type of expression in the Endpoint ID, for example, the Endpoint ID of a media gateway has two types, and the value of indication circuit type can be configured to 100, and the value of expression RTP type can be configured to 200;
4, what levels the end points of each type is divided in the Endpoint ID; For example the end points of indication circuit type has three levels in the Endpoint ID of a media gateway, the plate at this end points place of first layering number, the circuitry lines numbering of second this end points of layering in this plate, the time-gap number of the 3rd this end points of layering in this circuitry lines; The end points of expression RTP type has two levels, first layering plate number, second layering port numbers;
5, the end points of each type is in the beginning bit and the end bit position of each level in the Endpoint ID, and the span of each level is maximum and minimum value.
If media gateway adopts the Endpoint ID of text code encoding/decoding mode, then, need in Media Gateway Controller, be configured to content down for the Endpoint ID with text is converted into the inner manageable binary system Endpoint ID of Media Gateway Controller:
1, the text Endpoint ID is converted into the intrinsic BINARY Endpoint ID when representing, the number of bits of this binary system Endpoint ID, a common Media Gateway Controller can have a fixing number of bits that is converted to the binary system Endpoint ID to the text Endpoint ID, for example 32 or 64; Certainly, also can use in the Media Gateway Controller number of bits (being default number of bits) of inner definition as required, and configuration bit figure place no longer;
2, beginning bit that the type number in the Endpoint ID, and Endpoint ID type is used in the intrinsic BINARY Endpoint ID and end bit position, same, the end bit position of expression Endpoint ID type is the highest-order bit in the Endpoint ID;
3, the value of each endpoint type of expression in the Endpoint ID, because be text code, so need the text-string of each endpoint type of configuration expression and the corresponding relation of the binary value when intrinsic BINARY is encoded, the value that also binary value default of correspondence can be defined as first endpoint type is an initial value, as be 0 or 1, the value of each later endpoint type is then for adding 1 with the value (being initial value) of an endpoint type, thereby do not need the value of other endpoint type is configured again; For example, a media gateway has two endpoint type, the end points with the indication circuit type of character string " A " beginning, the end points with the expression Real-time Transport Protocol type of character string " RTP/ "; The corresponding relation of the value when needing the text-string " A " of configuration circuit type end points and intrinsic BINARY to represent, suppose that text-string corresponds to 100, the corresponding relation of the value the when text-string " RTP/ " of configuration Real-time Transport Protocol type end points and intrinsic BINARY are represented supposes that text-string " RTP/ " is 200;
4, what levels the end points of each type is divided in the Endpoint ID, for example the end points of indication circuit type is divided into three levels in the Endpoint ID of a media gateway, the plate at this end points place of first layering number, the circuitry lines numbering of second this end points of layering in this plate, the time-gap number of the 3rd this end points of layering in this circuitry lines; The end points of expression RTP type is divided two levels, first layering plate number, second layering port numbers;
5, the end points of each type is being converted into beginning bit and the end bit position of binary system Endpoint ID when representing at each level in the Endpoint ID, and the span of corresponding level is maximum and minimum value; Also need to dispose the fixed character string that uses in each level, and the digit strings use of corresponding level Chinese version coding is 16 systems or 10 systems; Simultaneously, the content of the fixed character string before at all levels can be sky, promptly can directly represent the information of corresponding level with digit strings;
6, the character of expression division level in the Endpoint ID, promptly the character that uses between each level of Endpoint ID is defined as owing in the agreement "/", so can not define again.
After having disposed the described Endpoint ID coding/decoding information of step 20 and step 21, Media Gateway Controller just can with the process of media gateway communication in easily the Endpoint ID of media gateway is carried out encoding and decoding and handles, referring to step 22.
Step 22: Media Gateway Controller carries out the encoding and decoding processing according to the coding/decoding information of configuration to corresponding Endpoint ID, specifically comprises:
When Media Gateway Controller receives the order that Media Gateway Controller sends, at first need to determine to send the media gateway of the corresponding command, be generally according to the sign of the media gateway in the order of sending and determine concrete media gateway, then, the encoding and decoding rule of this media gateway that inquiry is disposed, and the Endpoint ID in the described order is carried out decoding processing according to the code encoding/decoding mode and the corresponding coding/decoding information of configuration, to determine the Endpoint ID loaded information;
When Media Gateway Controller need be when a certain definite Media Gateway Controller sends order, at first inquire about coding/decoding information at this media gateway of determining configuration, and carry out the encoding process of Endpoint ID according to the corresponding coding/decoding information of configuration, promptly generate the Endpoint ID that this media gateway can be discerned, and send to corresponding media gateway with order.
Through the processing procedure of above-mentioned steps 20 to step 22, the present invention has realized that Media Gateway Controller can discern the Endpoint ID that generates based on different encoding and decoding rule, and can generate corresponding Endpoint ID according to the different Endpoint ID encoding and decoding rule that different media gateway adopt.Thereby what guaranteed to communicate by letter between media gateway and Media Gateway Controller normally carries out, and having avoided may be because the inconsistent appearance that causes the communication failure phenomenon of Endpoint ID code encoding/decoding mode and corresponding coding/decoding information in the prior art.
The invention will be further described with a concrete application example below, described example is discerned the different represented Endpoint ID of binary system endpoint identifier of media gateway wildcard for dispose media gateway Endpoint ID code encoding/decoding mode and corresponding coding/decoding information under Media Gateway Controller after.Suppose two media gateway that a Media Gateway Controller is controlled below: the Endpoint ID code encoding/decoding mode and the corresponding coding/decoding information of media gateway one and two, two media gateway of media gateway are respectively:
The endpoint identifier of media gateway one always has 32 bits (0 bit is to 31 bits), i.e. 4 bytes, the type of wherein the highest 8 bits (24 bits are to 31 bits) expression Endpoint ID, the Endpoint ID of this media gateway has two types, one is circuit types, its value is 128, and another is the RTP type, and its value is 129; The Endpoint ID of described circuit types is divided into three levels, first level be 16 bits to 23 bits, display plate number, its value scope is from 1 to 10; Second level be 8 bits to 15 bits, represent the circuitry lines numbering on the plate, its value scope is from 0 to 5; The 3rd level be 0 bit to 7 bits, represent the time-gap number in the circuitry lines, its value scope is from 0 to 31; The Endpoint ID of described RTP type is divided into two levels, first level be 16 bits to 23 bits, display plate number, its value scope is from 11 to 20; Second level be 0 bit to 15 bits, represent the port numbers on the plate, its value scope is from 0 to 60000;
The endpoint identifier of media gateway two always has 24 bits (0 bit is to 23 bits), i.e. 3 bytes, the type of wherein the highest 8 bits (16 bits are to 23 bits) expression Endpoint ID, the Endpoint ID of this media gateway has two types, one is circuit types, its value is 130, and another is the Real-time Transport Protocol type, and its value is 131; The Endpoint ID of described circuit types is divided into two levels, first level be 8 bits to 15 bits, the circuitry lines numbering of expression in the gateway, its value scope is from 1 to 20; Second level be 0 bit to 7 bits, represent the time-gap number in the circuitry lines, its value scope is from 1 to 32; The Endpoint ID of described RTP type has only a level, and to 16 bits, its value scope is from 1 to 65534 from 0 bit.
Because the encoding and decoding of two media gateway Endpoint IDs rule is different, so Media Gateway Controller must dispose the code encoding/decoding mode and the corresponding coding/decoding information of the Endpoint ID of two media gateway, could carry out correct processing to the Endpoint ID of two media gateway, after finishing the configuration of coding/decoding information of two media gateway Endpoint IDs, when media gateway one need send notification command to Media Gateway Controller, during all end points faults on the circuitry lines on the plate of announcing circuit type, then need to carry out following steps, and referring to Fig. 3:
Step 31: media gateway one is to the Media Gateway Controller order of giving notice, and Endpoint ID is in the order: 128,6,3, and X, wherein, the i.e. separator of 8 bits of a byte represented in comma in the Endpoint ID, X represents the effective value that wildcard is all.
Step 32: after Media Gateway Controller is received the order that media gateway one sends, at first determine that according to the media gateway sign of carrying in the order described media gateway is a media gateway one, and the encoding and decoding rule of inquiring about the Endpoint ID of the media gateway one that is disposed, after determining described code encoding/decoding mode and corresponding coding/decoding information, execution in step 33, Endpoint ID in the described order is carried out decoding processing, i.e. the Endpoint ID information of resolve command.
Step 33: the endpoint type information that inquires the Endpoint ID of media gateway one according to the coding/decoding information that disposes is recorded in bit 24 to bit 31, the beginning bit 24 and the endpoint type value in the end bit position 31 of record endpoint type are 128 in the sense command, execution in step 34.
Step 34: mate according to two endpoint type values of the media gateway one in the value 128 of endpoint type and the coding/decoding information that is disposed (promptly 128 and 129), and determine that the value and 128 of corresponding endpoint type mates execution in step 35.
Step 35: inquire about according to endpoint type, each hierarchical information that the endpoint type that the endpoint type value of coupling is disposed comprises, the endpoint type that promptly definite endpoint type is worth 128 pairing configurations comprises 3 levels, and determine the bit that each level takies separately, wherein: the 3rd layer is that bit 16 arrives bit 23, and its span is 1 to 10; The 2nd layer is that bit 8 arrives bit 15, and its span is 0 to 5; The 1st layer is that bit 0 arrives bit 7, and its span is 0 to 31.
Step 36: corresponding bit obtains the information of each layer that endpoint type comprises from the Endpoint ID of the order that receives, and corresponding end points in definite media gateway one, specifically comprises:
Obtain the 3rd layer of information, reading bit 16 in the end points name is 6 to the value of bit 23;
Obtain the 2nd layer of information, reading bit 8 in the end points name is 3 to the value of bit 15;
According to wildcard information in the end points name, determine be last level just the 1st layer span be all effective values, determine that according to the 1st layer span the scope of its effective value is 0 to 31.
Determine wildcard Endpoint ID 128 on the media gateway one according to each layer information of obtaining, 6,3, the represented Endpoint ID of X is 128,6,3,0 to Endpoint ID 128,6,3, all end points between 31, so far, the present invention has realized can discerning the Endpoint ID that each media gateway adopts different encoding and decoding rules to generate in Media Gateway Controller, thereby makes and no longer need to adopt the identical corresponding Endpoint ID of encoding and decoding rule definition between each media gateway of requirement, has realized the reliable communication between Media Gateway Controller and media gateway comparatively easily.
Same hypothesis media gateway two sends notification command to Media Gateway Controller, all end points faults on the circuitry lines of announcing circuit type, suppose that the Endpoint ID in the order is: 130,6, X, wherein, the i.e. separator of 8 bits of a byte represented in comma in the Endpoint ID, X represents the effective value that wildcard is all, and processing procedure and Fig. 3 are similar, specifically may further comprise the steps:
Step 311: after the order that Media Gateway Controller receiving media gateway sends, identifying the media gateway that sends order according to the media gateway in the order is media gateway two, and the code encoding/decoding mode and the corresponding coding/decoding information of the Endpoint ID of the media gateway two that disposed of inquiry, execution in step 312 then.
Step 312: the type information of determining Endpoint ID according to corresponding coding/decoding information, promptly inquire the endpoint type information of the Endpoint ID of media gateway, and determine that the bit that endpoint type takies in the order is that beginning bit 16 is to end bit position 23, bit 16 is 130 to the value of bit 23 in the taking-up Endpoint ID, execution in step 313.
Step 313: compare coupling according to the value 130 of endpoint type and two endpoint type values of the media gateway two of configuration (promptly 130 and 131), determine and corresponding endpoint type value 130 couplings, follow execution in step 314.
Step 314: inquiry determines that the endpoint type that endpoint type value 130 disposes comprises 2 levels in Media Gateway Controller according to endpoint type, and determine the bit that each hierarchical information takies separately, wherein, the 2nd layer of bit 8 is to bit 15, and its span is 1 to 20; The 1st layer of bit 0 is to bit 7, and its span is 1 to 32, execution in step 315.
Step 315: the bit that takies according to each hierarchical information of determining obtains each hierarchical information that endpoint type comprises respectively from Endpoint ID, and the concrete end points under definite media gateway two, comprising:
Obtain the 2nd layer of information, reading bit 8 in the end points name is 6 to the value of bit 15;
According to wildcard information in the end points name, determine be last level just the 1st layer span be all effective values, determine that according to the 1st layer span the scope of its effective value is 1 to 32;
Determine wildcard Endpoint ID 130,6 on the media gateway two according to each hierarchical information of obtaining, the represented Endpoint ID of X is 130,6,1 to Endpoint ID 130,6, all end points between 32.
Adopt the identifying of Endpoint ID in the media gateway device of different binary system code encoding/decoding mode definition to be illustrated in conjunction with Fig. 3 to media gateway above, adopt the Endpoint ID of different text code encoding/decoding mode definition to describe in conjunction with Fig. 4 to media gateway more below, so that specific implementation of the present invention is had further understanding in the identifying of Media Gateway Controller.
Below at first with one after configuration media gateway Endpoint ID nomenclature scheme under the Media Gateway Controller, the endpoint identifier of text code is converted into the endpoint identifier of two mechanism, and the example of the represented Endpoint ID of text endpoint identifier of identification wildcard the present invention will be described, the communication of media gateway controller for controlling media gateway three.
The encoding and decoding rule of the text endpoint identifier of media gateway three is: TDM/unit#/E1-#/# and RTP/unit#/#, and wherein # represents digit strings; At inner 32 bits (0 bit is to 31 bits) that use of Media Gateway Controller, promptly the binary system endpoint identifier of 4 bytes is represented text Endpoint ID, the type of wherein the highest 8 bits (24 bits are to 31 bits) expression Endpoint ID, the Endpoint ID of this media gateway has two types, one is circuit types, and its value is 128, and another is the Real-time Transport Protocol type to pairing character string for " TDM/ ", its value is 129, and pairing character string is " RTP/ "; The Endpoint ID of described circuit types is divided into three levels, first level be 16 bits to 23 bits, display plate number, its value scope is from 1 to 10, the fixing character string in front is " unit ", and what the digit strings of this level was used is metric character string; Second level be 8 bits to 15 bits, represent the circuitry lines numbering on the plate, its value scope be from 0 to 5, the fixing character string in front is " E1-", the digit strings use of this level be metric character string; The 3rd level be 0 bit to 7 bits, represent the time-gap number in the circuitry lines, its value scope is from 0 to 31, the fixing character string in front be empty, the digit strings use of this level be metric character string; The Endpoint ID of described RTP type is divided into two levels, first level be 16 bits to 23 bits, display plate number, its value scope is from 11 to 20, the fixing character string in front is " unit ", and what the digit strings of this level was used is metric character string; Second level be 0 bit to 15 bits, represent the port numbers on the plate, its value scope is from 0 to 60000, the fixing character string in front be empty, the digit strings use of this level be the character string of 16 systems.
After the volume that Media Gateway Controller has disposed the Endpoint ID of corresponding media gateway three is separated mode, suppose that media gateway three-dimensional Media Gateway Controller sends notification command, all end points faults on the circuitry lines on the plate of announcing circuit type suppose that Endpoint ID is in the order: TDM/unit6/E1-3/ *, then concrete processing procedure may further comprise the steps referring to Fig. 4:
Step 41: after Media Gateway Controller is received the order that media gateway three sends, determine that according to the sign of the media gateway in the order described media gateway is a media gateway three, and the code encoding/decoding mode and the corresponding coding/decoding information of the Endpoint ID of the media gateway three that disposed of inquiry, execution in step 42;
Step 42: the Endpoint ID of determining media gateway according to inquiry uses 32 bits to represent in Media Gateway Controller, perhaps determine that according to Media Gateway Controller inside default definition the number of bits that Endpoint ID uses is 32, so that the text endpoint identifier is converted into corresponding bits figure place (32 s') binary coding representation.
Step 43: read Endpoint ID character string " TDM/ " and mate, to determine the endpoint type value of corresponding text Endpoint ID character string correspondence with the character string " TDM/ " of the endpoint type of configuration.
Step 44: character string " TDM/ " the corresponding end vertex type value that inquires configuration is 128; And by the beginning bit of searching the endpoint type in the Endpoint ID of determining configuration is 24, and the end bit position is 31, so endpoint type value 128 is filled among 24 to 31 of binary system Endpoint ID of the inner use of Media Gateway Controller.
Step 45: inquire about the hierarchical information that described endpoint type comprises according to endpoint type and comprise 3 layers for it, the 3rd layer be bit 16 to bit 23, its span is 1 to 10, the fixed character string is " unit ", digit strings is 10 systems; The 2nd layer is that bit 8 arrives bit 15, and its span is 0 to 5, and the fixed character string is " E1-", and digit strings is 10 systems; The 1st layer is that bit 0 arrives bit 7, and its span is 0 to 31, and the fixed character string is empty, and digit strings is 10 systems;
Step 46: obtain each layer information that endpoint type comprises in the Endpoint ID, and be translated into corresponding binary coding and be filled into 32 binary system Endpoint IDs codings in the Media Gateway Controller of text Endpoint ID correspondence, and determine to send the end points of the media gateway three that the Endpoint ID in the order determines, specifically comprise:
Obtain the 3rd layer of information, read and 3 layers of content " unit " that the fixed character string is identical, read the digit strings of back then, digit strings according to the 3rd layer of configuration is 10 binary information, character string " 6 " is converted into numerical value 6, to bit 23 information, numerical value 6 is filled into bit 16 in the inner binary system Endpoint ID that uses of Media Gateway Controller in bit 23 according to the bit 16 of the 3rd layer of configuration;
Obtain "/" of Endpoint ID back character string, be defined as dividing the character string of level;
Obtain the 2nd layer of information, read and 2 layers of content " E1-" that the fixed character string is identical, read the digit strings of back then, digit strings according to the 2nd layer of configuration is 10 binary information, character string " 3 " is converted into numerical value 3, to bit 15 information, numerical value 3 is filled into bit 8 in the inner binary system Endpoint ID that uses of Media Gateway Controller in bit 15 according to the bit 8 of the 2nd layer of configuration;
Read "/" of Endpoint ID back character string, know it is the character string of dividing level;
Obtain the 1st layer of information,, directly read the digit strings of back because 1 layer of fixed character string is empty, read character string for " *", this character representation wild-character, determine be last level just the 1st layer span be all effective values, determine that according to the span of the 1st layer configuration the scope of its effective value is 0 to 31;
Can determine wildcard Endpoint ID TDM/unit6/E1-3/ on the media gateway three thus *Represented two inner in Media Gateway Controller machine-processed Endpoint IDs be 128,6,3,0 to 128,6, all end points between 3,31, and the i.e. separator of 8 bits of a byte represented in comma wherein.
Suppose that again media gateway three need send notification command to Media Gateway Controller, port failure on the plate of notice RTP type, Endpoint ID in the notification command is: RTP/unit16/10, Media Gateway Controller receives that concrete processing procedure and the processing procedure shown in Figure 4 after this order is similar, specifically may further comprise the steps:
Step 411: after Media Gateway Controller is received described notification command, determine that according to the sign of the media gateway in the order described media gateway is a media gateway three, and the code encoding/decoding mode and the corresponding coding/decoding information of the Endpoint ID of media gateway three are determined in inquiry.
Step 412: determine that according to described coding/decoding information the Endpoint ID of media gateway three uses 32 bits to represent in Media Gateway Controller, perhaps determine that according to Media Gateway Controller inside default definition the Endpoint ID of media gateway three uses 32 bits to represent in Media Gateway Controller, with the convenient binary coding that described text endpoint identifier is converted into corresponding 32 bits.
Step 413: the Endpoint ID character string " RTP/ " in will ordering is mated with the character string " RTP/ " of the endpoint type of the Endpoint ID of configuration, to determine corresponding endpoint type value.
Step 414: by inquiring about character string " RTP/ " the corresponding end vertex type value of determining configuration is 129, and the beginning bit of the endpoint type of the binary system Endpoint ID of putting is 24, the end bit position is 31, is filled among 24 to 31 of the inner binary system Endpoint ID that uses of Media Gateway Controller so will be worth 129.
Step 415: determine the hierarchical information that the endpoint type of configuration comprises according to described endpoint type inquiry, be 2 layers, the 2nd layer is that bit 16 arrives bit 23, and its span is 11 to 20, and the fixed character string is " unit ", and digit strings is 10 systems; The 1st layer is that bit 0 arrives bit 15, and its span is 0 to 60000, and the fixed character string is empty, and digit strings is 16 systems;
Step 416: Media Gateway Controller obtains each hierarchical information that the endpoint type of the Endpoint ID in the order that receives comprises, and corresponding information translation turned to binary coding, end points with the definite media gateway three of the Endpoint ID in the order of determining to be received specifically comprises:
Obtain the 2nd layer of information, read and the 2nd layer of content " unit " that the fixed character string that is disposed is identical, read the digit strings of back then, digit strings according to the 2nd layer of configuration is 10 binary information, character string " 16 " is converted into numerical value 16, to bit 23 information, numerical value 16 is filled into bit 16 in the inner binary system Endpoint ID that uses of Media Gateway Controller in bit 23 according to the bit 16 of the 2nd layer of configuration;
Read "/" of Endpoint ID back character string, be defined as dividing the character string of level;
Obtain the 1st layer of information, know that according to the information of configuration the 1st layer of fixed character string is for empty, directly read the digit strings of back, digit strings according to the 1st layer of configuration is 16 binary information, character string " 10 " is converted into numerical value 16, to bit 15 information, numerical value 10 is filled into bit 0 in the inner binary system Endpoint ID that uses of Media Gateway Controller in bit 15 according to the bit 0 of the 1st layer of configuration;
Thus, can determine that the represented end of media gateway three upper extreme points signs " RTP/unit16/10 " is 129,16 for two inner in Media Gateway Controller machine-processed Endpoint IDs, 0,16 end points, same, the i.e. separator of 8 bits of a byte represented in comma wherein.
The present invention also comprises when Media Gateway Controller need be to a certain definite media gateway transmitting control commands, Media Gateway Controller needs to generate corresponding Endpoint ID according to the code encoding/decoding mode and the corresponding coding/decoding information that dispose at described definite media gateway, described Endpoint ID correspondence the end points that needs under the media gateway receive described control command, after generating corresponding Endpoint ID, send to definite media gateway with in its carrying and the control command to be sent, and according to the Endpoint ID in the order it is handed down to corresponding end points by media gateway.
Be that example describes the processing procedure that Media Gateway Controller among the present invention issues control command still below with media gateway three.Media Gateway Controller is determined need be to the end points 129 of media gateway three, 16,0,16 issue control command, at first determine that according to the Endpoint ID code encoding/decoding mode of the media gateway three that disposes in the Media Gateway Controller and corresponding coding/decoding information binary coding types value 129 correspondences the RTP type in the text code rule that media gateway three adopted, endpoint type comprises 2 layers altogether, the text code of the 2nd layer binary coding 16 correspondences is that fixed character string " unit " adds 16 (16 is 10 systems), the fixed character string of the text code of the 1st layer binary coding 16 correspondences is empty, so corresponding text is encoded to 10 (10 is 16 systems), adopt "/" as the character string of dividing level between each level, can draw the end points 129 of media gateway three thus, 16,0, the text code of the Endpoint ID of 16 correspondences is RTP/unit16/10, then, Media Gateway Controller just can be carried on the text code of definite Endpoint ID and send to definite media gateway three in the control command, after media gateway three is received this control command, adopt the text code encoding/decoding mode that it is carried out decoding processing, to determine to need to receive the end points of described control command.

Claims (10)

1. a method of supporting different Endpoint IDs is applied to Media Gateway Controller, it is characterized in that comprising:
The Endpoint ID encoding and decoding rule of A, pre-configured each media gateway;
B, according to the encoding and decoding rule of the Endpoint ID of each pre-configured media gateway to the mutual order of media gateway in Endpoint ID carry out encoding and decoding and handle.
2. Media Gateway Controller according to claim 1 is supported the method for different Endpoint IDs, it is characterized in that described encoding and decoding rule comprises: the code encoding/decoding mode of Endpoint ID and corresponding coding/decoding information, and described step B comprises:
Determine to receive or order that to be sent and media gateway are mutual in the code encoding/decoding mode and the corresponding coding/decoding information of Endpoint ID, carry out the encoding and decoding processing according to the Endpoint ID in the mutual order of the code encoding/decoding mode of determining and corresponding coding/decoding information pair and media gateway.
3. Media Gateway Controller according to claim 2 is supported the method for different Endpoint IDs, it is characterized in that the code encoding/decoding mode of described various Endpoint IDs comprises:
Endpoint ID is binary system code encoding/decoding mode or text code encoding/decoding mode.
4. Media Gateway Controller according to claim 3 is supported the method for different Endpoint IDs, it is characterized in that when described configuration Endpoint ID was the binary system code encoding/decoding mode, described coding/decoding information comprised:
The binary bits figure place of Endpoint ID;
The number of the type of Endpoint ID;
The number of bits of the type of Endpoint ID reaches and begins bit and end bit position accordingly;
The value of the type of Endpoint ID;
The hierachy number that each type Endpoint ID comprises and the beginning bit of each level and end bit position, and the span of each level.
5. support the method for different Endpoint IDs according to claim 3 or 4 described Media Gateway Controllers, it is characterized in that when described configuration Endpoint ID was the text code encoding/decoding mode, described coding/decoding information comprised:
Endpoint ID is converted into the number of bits of binary system Endpoint ID;
The number of the type of Endpoint ID;
The conversion in type of Endpoint ID is binary number of bits and begins bit and end bit position accordingly;
The text code value of the value of the type of Endpoint ID and the corresponding relation of binary coded value;
The binary-coded beginning bit and the end bit position of the hierachy number that same type Endpoint ID comprises and each level, and the span of each level;
The text code value of each level value and the corresponding relation of binary value.
6. Media Gateway Controller according to claim 1 is supported the method for different Endpoint IDs, it is characterized in that described step B comprises:
B1, determine with reception with the mutual order of media gateway or to be sent and the mutual relevant media gateway of order of media gateway;
B2, according to the code encoding/decoding mode of various Endpoint IDs of each media gateway of configuration, determine the code encoding/decoding mode of the Endpoint ID of described media gateway;
B3, the Endpoint ID with in the mutual order of media gateway that receives is carried out decoding processing according to the code encoding/decoding mode of determining and corresponding coding/decoding information; Or carry out the encoding process of the Endpoint ID in the mutual order of to be sent and media gateway according to the code encoding/decoding mode of determining and corresponding coding/decoding information.
7. Media Gateway Controller according to claim 6 is supported the method for different Endpoint IDs, it is characterized in that described step B1 comprises:
According to media gateway sign determine with reception with the mutual order of media gateway or to be sent and the mutual relevant media gateway of order of media gateway.
8. Media Gateway Controller according to claim 6 is supported the method for different Endpoint IDs, it is characterized in that code encoding/decoding mode that described basis is determined and corresponding coding/decoding information carry out decoding processing and comprise the Endpoint ID with in the mutual order of media gateway that receives:
Resolve reception by different level according to the code encoding/decoding mode of determining and corresponding coding/decoding information with the mutual order of media gateway in Endpoint ID, and determine the end points of described Endpoint ID correspondence.
9. Media Gateway Controller according to claim 6 is supported the method for different Endpoint IDs, it is characterized in that the encoding process that code encoding/decoding mode that described basis is determined and corresponding coding/decoding information carry out the Endpoint ID in the mutual order of to be sent and media gateway comprises:
When Media Gateway Controller need be to the media gateway transmitting order to lower levels determined, carry out the encoding process of the Endpoint ID in the mutual order of to be sent and media gateway according to the code encoding/decoding mode of the Endpoint ID of the media gateway of determining of configuration and corresponding coding/decoding information.
10. Media Gateway Controller according to claim 1 is supported the method for different Endpoint IDs, it is characterized in that:
Described Endpoint ID comprises:
End points Endpoint sign in the MGCP MGCP agreement;
Terminal Termination sign in the MGCP H248 agreement;
End points Endpoint sign in the based on network call signaling NCS agreement;
The encoding and decoding rule of described Endpoint ID comprises:
If what media gateway adopted is the H248 agreement, then the code encoding/decoding mode of Endpoint ID wherein is binary system code encoding/decoding mode or text code encoding/decoding mode;
If what media gateway adopted is MGCP agreement or NCS agreement, then the code encoding/decoding mode of Endpoint ID wherein is the text code encoding/decoding mode.
CNB031552056A 2003-08-19 2003-08-19 Method for supporting different port marker by medium gateway controller Expired - Lifetime CN100397846C (en)

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