CN1997239B - Method for ISDN user access via the No 7 signaling - Google Patents

Abstract

This invention discloses one method to realize ISDN user interface by use of seven signal, which comprises the following steps: establishing seven number interface collection place and end place connection and aligning user data; adding said collection place to process the said ISDN user main call and called situation and to send relative information to ISDN call; This invention method need no alternation of any network rack and hardware to extend business function.

Description

A kind of Signaling System Number 7 that utilizes is realized the method that the isdn user inserts

Technical field

The present invention relates to the programme-controlled exchange access technology of the communications field, relate in particular to a kind of Signaling System Number 7 that in communication network, utilizes and realize the method that the user inserts.

Background technology

In today of telecommunications high speed development, only rely on high-tech and high-quality to guarantee that the telephone communication fault-free can not satisfy user's demand, simultaneously also deficiency so that the communication network operator in market competition, keep on top, even take the strategy of low price, role also is limited in competition.User's demand requirement operator can provide the value-added service of diversification rapidly, to satisfy the demand of their each side.The trend of this market diversification just requires must introduce more strong intelligence service and mobile service in the network, to improve the adaptability to changes of network to business.

The model of the end office switch in the communication network is various, and ability does not wait.A lot of end office switch do not possess the function of SSP (Service Switching Point Service Switching Point), can not provide various featured new business for the user.If the network equipment is not optimized and transforms, can produce adverse influence to the market competitiveness of the operator that has these switching equipment.Existing scheme at the network optimization and scrap build has SSP to move down scheme, Call Forwarding scheme, divides the class of subscriber scheme, increases the user property scheme, increases user property register scheme etc.These schemes are each has something to recommend him technically, and are also inequality in fund input.But carry out the work of the intelligent and mobile of the whole network, provide the business of diversification rapidly for the user, just must upgrade switch software at the whole network.

The switch product that has many old brand switch producers such as Nortl, NEC etc. to produce on the communication network.The switch market but these producers just progressively fade out, no longer for the existing network product provides upgrading service, the equipment operator of making can't provide the business that presses for for these exchanger users.Because these switches do not have the function of SSP, and the V5 interface of AN side is not provided, also can't support characteristic services such as prison power, password charging, IP-Hotel.But it is very expensive again to replace the expense of transforming, thereby, need a kind of the needs that these switches are carried out software upgrading, and smaller again method solve the problems referred to above in fund input.

No. seven access technologies of the prior art are exactly to utilize the MTP transmission and the ISUP signaling technology of these switch supports to simulate the V5 interfacing, thereby original end office switch user as user of access network, so only need increase the new business that a business platform just can provide various urgent needs for original exchanger user in these switch fronts, because business platform is pure trunk module, greatly reduces upgrade cost.Business platform can be by having the SSP function and can taking on by NO.7 signaling access user's switch.The core concept of this technology is that business platform is handled original end office switch user by the NO.7 access network technology as user of access network.Like this, business platform has just had the user data and the user property of former cause end office switch management, and can realize various value-added services according to user property.

Present No. seven access technologies have obtained concrete application in network, obtaining effect preferably aspect PSTN user's access, but prior art still can not realize isdn user's access.

In order to support the isdn user, can take the mode of common tandem to these users.So,, also make network more complicated, obviously lose more than gain losing all superiority that No. seven access technologies are brought.For this reason, need seek a kind of superiority of not losing No. seven access technologies, improvement cost is lower simultaneously, and the scheme that can overcome the above problems.

Isdn user's call treatment is to be realized by special module, calling is triggered by the signaling message of ISDN, ordinary call is called out (as three parts, meeting etc.) with new business all different signaling messages, carry out the encoding and decoding of signaling message earlier, carries out Business Processing again.If the ISDN processing module of the isdn user's of end office (EO) calling by the NO.7 access tandem, be NO.7 insert Simulation with I SDN signaling bottom module can there are the following problems: at first be to change no.7 signaling message and isdn signaling message, this is very loaded down with trivial details and complicated undoubtedly, most in addition ISDN new business signaling messages are that end office (EO) handles, may not be sent to tandem exchange by NO.7 and handle, the new business of so a lot of ISDN just can not realize with original mode.

If the isdn user's of end office (EO) calling being linked into PSTN (the Public SwitchedTelephone Network public switched telephone network (PSTN)) processing module of tandem exchange can address the above problem.At first the calling of PSDN triggering message kind is few and simple, uses original interface and can realize easily; Change the use habit of original isdn user's new business simultaneously, adopt the conversation state dtmf signal to transmit the new business that processing that the new business method of operating can be convenient to use PSTN user's new business realizes ISDN such as three parts, meeting.

Because prior art is based on PSTN user's realization, so how the specific information that inserts for the isdn user transmits, as the transmission medium request, insert and to pass on and be connected problem such as number, and ISDN2B+D has two B passages is arranged, how two callings that identical calling number is initiated are handled, and problem such as how to judge in the divert when busy business, and prior art does not have good solution, and then limited the function range of application of No. seven access tandems, increased improvement expenses.

Summary of the invention

Provided by the present invention is that a kind of Signaling System Number 7 that utilizes is realized the method that the isdn user inserts, can be under the prerequisite that does not change network hardware configuration and incoming end office software, the function that provides the isdn user to insert, expand the function of No. seven access tandems, made it to be adapted to fully the access of two kinds of different users of PSTN/ISDN.

For solving the problems of the technologies described above, the present invention program comprises:

A kind of Signaling System Number 7 that utilizes is realized the method that the isdn user inserts, and wherein, said method comprising the steps of:

A, set up being connected of No. seven access tandems and end office (EO), and the configure user data;

B, increase of the processing of described tandem exchange to described isdn user's caller situation and called situation, and the transmission information relevant with described isdn call.

Described method, wherein, step B also comprises following concrete steps in the described method:

B1, when described isdn user is the calling subscriber, then information relevant with described isdn call in the initial address message is sent to callee side.

Described method, wherein, the B step also comprises following concrete steps in the described method:

B2, when described isdn user is the called subscriber, then will the back in Address Complete Message the information relevant with described isdn call send Calling Side to.

Described method, wherein, described method also comprises following concrete steps:

C, described tandem exchange dispose different virtual subscribers feeder addresses respectively to two B passages.

Adopt method provided by the present invention to realize in the network that Signaling System Number 7 inserts, not changing network hardware configuration and incoming end office software, the function that just provides the isdn user to insert, make Signaling System Number 7 access technology simultaneous adaptation in two kinds of different users' of PSTN/ISDN access, and do not need to enter the change of any network architecture and hardware device, pay less cost and just greatly expanded business function, satisfied the demand of different user, significantly reduced improvement cost network.

Description of drawings

Fig. 1 is the schematic diagram of network configuration behind No. seven access tandems of introducing of the present invention;

Fig. 2 is that ISDN of the present invention inserts the schematic diagram that the user makes the call flow of caller;

Fig. 3 is that ISDN of the present invention inserts the schematic diagram that the user makes called call flow.

Embodiment

Below with reference to accompanying drawing, comparatively detailed explanation is carried out in preferred embodiment of the present invention.

Provided by the present invention is that a kind of Signaling System Number 7 that utilizes is realized the method that the isdn user inserts, can be under the prerequisite that does not change network hardware configuration and incoming end office software, the function that provides the isdn user to insert, expanded the function of No. seven access tandems, made it the access of simultaneous adaptation in two kinds of different users of PSTN/ISDN.

Be described in further detail below in conjunction with the enforcement of accompanying drawing technical solution of the present invention:

As shown in Figure 1, introduce after No. seven access tandems, the ISDN of end office (EO) inserts user's the whole tandems of calling and handles to tandem exchange.

As shown in Figure 2, in the call flow when ISDN access user of the present invention does caller, tandem exchange is according to the sign in IAM (the Initial Address initial address) message, tandem exchange can know that caller is the isdn user, and send information relevant with ISDN in the IAM message to callee side this moment.

As shown in Figure 3, inserting the user at ISDN of the present invention does in call flow when called, tandem exchange is according to the sign of back in ACM (Address Complete address is complete) message, the called isdn user that is can know in tandem exchange, and send information relevant with ISDN in the ACM/ANM message to Calling Side this moment.

Below with reference to Fig. 1, Fig. 2, the concrete grammar of realization of the present invention isdn user's No. seven access technologies is described in detail with Fig. 3.

As shown in Figure 1, set up being connected of No. seven access tandems and end office (EO), and the user data of configuration tandem exchange.Wherein, the user of end office (EO) comprises PSTN user and isdn user.The data of tandem exchange can be identical with end office (EO) data, also can increase some new attributes on the basis of end office's user data.Isdn user's data configuration and PSTN user data collocation method are basic identical, but need to use additional isdn user to indicate that this user of indication is the isdn user.As Fig. 2 and shown in Figure 3, the isdn user of end office (EO) rises and exhales or during as called landing, tandem exchange transmits the added field relevant with ISDN, with support isdn user's particular service.

In process shown in Figure 2, when ISDN access user does caller, the IAM message forward direction that tandem exchange receives is called out in the indication, if isdn user's OI origin indicator is true time, tandem exchange need call out the transmission medium request in the IAM message, forward direction indication and access and pass on parameter and be delivered to and land both callee sides of side.

In process shown in Figure 3, ISDN inserts the user and does when called, after the ACM/CON message that tandem exchange receives in calling out indication, if isdn user's terminating is masked as true time, tandem exchange need pass a parameter the access in the ACM message, and the access in the ANM/CON message is passed on parameter and hyphen code parameters and has been delivered to and exhales side.It should be noted that for isdn user's terminating in ACM message and the ANM in the same call flow and insert inconsistent abnormal conditions, be as the criterion with the value in the ACM message.

Isdn user's 2B+D ISDN has two B passages (B Channel, bearer path) in the present invention, allows two B passages to set up different callings respectively.Therefore, no matter the isdn user does caller and still does calledly, and tandem exchange allows two B passages are disposed different virtual subscribers feeder addresses respectively, makes two B passages just can independently call out.

Isdn user's new business adopts dial mode to replace by the mode that keeps key among the present invention, user's function that (as ##, this number can be joined) realization is called out that can dial specific number.By dial mode, new business unifications such as meeting, three parts, switching can be moved on to tandem exchange and handle, rather than handle by each end office (EO) oneself.

The invention solves No. seven and insert the problem that to support fully the isdn user, make that the range of application that inserts for No. seven is more extensive.Simultaneously, the present invention has only introduced the change of tandem exchange's software, and all without any influence, cost is less relatively to the hardware environment of the hardware environment of tandem exchange and end office (EO) and data configuration.

Should be understood that, more than not should be understood to the protection range of patent of the present invention at the detailed description of preferred embodiment of the present invention, the protection range of patent of the present invention should be as the criterion with claims.

Claims (2)

1. one kind is utilized Signaling System Number 7 to realize the method that the isdn user inserts, and it is characterized in that, said method comprising the steps of:

A, set up being connected of No. seven access tandems and end office (EO), and the configure user data, use additional isdn user to indicate that the indication user is the isdn user;

B, increase of the processing of described tandem exchange to described isdn user's caller situation and called situation, and the transmission information relevant with described isdn call;

When ISDN inserted the user and does caller, tandem exchange need call out the transmission medium request in the IAM message, forward direction indication and access and pass on parameter and be delivered to callee side;

ISDN inserts the user and does when called, and tandem exchange need pass a parameter the access in the ACM message, and the access in the ANM/CON message is passed on parameter and hyphen code parameters and has been delivered to and exhales side; Insert inconsistent abnormal conditions for isdn user's terminating in ACM message and the ANM in the same call flow, be as the criterion with the value in the ACM message;

C, described tandem exchange dispose different virtual subscribers feeder addresses respectively to two B passages.

2. method according to claim 1 is characterized in that, described method also comprises following concrete steps:

To isdn user's new business, adopt dial mode to realize calling out, the new business unification is moved on to tandem exchange handle.

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