CN1474582A - Intelligent public telephone system and communication method based on frequency deviation key control mode - Google Patents

Abstract

This invention discloses a communication method for an intelligent public system based on a frequency shift key control (FSK) way, a terminal call dials an intelligent public phone access code to enter into the intelligent public phone system, SSP blocks the call to report to SCP, which carries out legal flow verification with terminal phones according to FSK way, SCP informs SSP to continue the call according to the effective called number sent by terminal phones to inform SSP to continue the call, if it succeeds and the called phone is off-hook, SCP informs the terminal in the way of FSK to generate one calling time charged by the intelligent network, after the calling or called phones are off-hook, SCP will automatically inform the calling phone every user information of last time in the FSK way.

Description

A kind of intelligent public telephone system and communication means based on frequency deviation key control mode

Technical field

The present invention relates to the Intelligent Pay Phone Service field, specifically, be based on the intelligent public telephone system and the communication means of frequency shift keying (FSK) mode.

Background technology

Development and national economy and needs of society have promoted developing rapidly of public telephone.The popularity of public telephone has become the important indicator of weighing a urban economy development level.Traditional telecommunications public telephone realizes adopting dual mode: a kind of use Stored Value IC-card, and user profile checking and charging are all handled on telephone terminal; A kind of scheme that is to use common phone Premium Charging device is acted on behalf the family and is collected customer charge by the rate setting of taximeter.Because the intrinsic shortcoming of dual mode, as the secant free call on sb. else's expense through illegal means of IC Card Telephone, the malicious modification of Attended mode taximeter and malicious owing fee etc., it is 00106373.1 " intelligent public telephone system and communication means thereof " that the someone has proposed the patent No..The traditional public words mode that compares, intelligent public phone have that convenient management, business function are abundant, platform is unified plurality of advantages such as charging, user prepayment and strong security and anti-free call on sb. else's expense through illegal means.By the joint efforts of telecom operators, system manufacturer and manufacturer terminal, intelligent public phone is promoted the use of gradually in China.

In the intelligent public telephone system, before user's communication begins and behind the end of conversation, require to carry out between intelligent public phone phone set terminal and the intelligent network a series of information interaction, to finish such as flow processs such as subscription authentication, ciphertext transmission and expense issue.Current, when intelligent network and intelligent public phone phone set terminal carry out information interaction, adopted the Dual Tone Multifrequency mode carry interactive information (" intelligent public telephone service technique standard ", YD/T1150-2001).Under the DTMF mode, information of every transmission need take the above duration (GB/T 15279-94 " automatic telephone technical conditions ") of 80ms at least, and the information digit that per second can transmit can reach 10 characters at most.This makes the intelligent public phone of DTMF mode have two major defects: the one, and the time of intelligent network and phone set terminal information interaction is oversize, can reach more than 7 seconds usually under the practical environment; The 2nd, because the restriction of the rate of information throughput makes intelligent network and terminal room can only transmit the finite information amount, restricted the new function development of intelligent public phone.These shortcomings have had a strong impact on the practicality of intelligent public phone, have hindered the popularization and the development of intelligent public telephone system.

In order to overcome these shortcomings of above-mentioned DTMF mode intelligent public phone, someone has proposed the patent No. is " implementation method of Intelligent Pay Phone Service and system " patent application of 00124543.0, its core concept is to use the ISDN mode to carry interactive information, though the intelligent public telephone system information interaction speed of ISDN mode is fast, but but have the poor compatibility, business can only be, so have limited carrying out of Intelligent Pay Phone Service under this mode in the shortcomings such as place use that open the ISDN service.

Summary of the invention

The technical assignment that the present invention will solve proposes that a kind of interactive information transfer rate is fast, system compatibility is strong, professional ability is strong, the simple intelligent public telephone system of system and communication means.

The Intelligent Pay Phone Service communication means that the present invention proposes comprises:

(1) the terminal phone enters intelligent public telephone system by dialling the intelligent public phone access code;

(2) the SSP interception is called out and is reported SCP to handle;

(3) SCP by SSP according to carrying out the legitimacy flow verification between frequency shift keying (FSK) mode and terminal phone;

(4) after checking is finished, effective called number that SCP sends according to the terminal phone, notice SSP carries out call proceeding;

(5) if when continuing success and called receiver off-book, SCP notifies phone set terminal to produce the call timing by the called off-hook event of collecting in the FSK mode, and calling is carried out intelligent network is unified to charge;

(6) after called phone or the main dialing telephone on-hook, under the trend main dialing telephone, catch time various user profile of conversation in the FSK mode.

The intelligent public telephone system that the present invention proposes, comprise terminal, public telephone network (PSTN) and intelligent net system, described terminal comprises frequency shift keying (FSK) functional unit and control unit at least, described terminal and described intelligent net system carry out information interaction, supporting the bidirectional transmit-receive of FSK information, is the access point of customer call;

Described intelligent net system comprises at least:

Service creation environment (SCE) is used to generate FSK mode Intelligent Pay Phone Service and transmits and business operation to support FSK information;

Service management point (SMP) is used for providing management to the service operation of FSK mode intelligent public phone;

SMAP (SMAP) is the interface of user and described service management point (SMP);

Service Control Point has the Intelligent Pay Phone Service logic processing module of supporting the FSK mode;

Service Switching Point connects public telephone network (PSTN) and intelligent network;

Described SCE generates FSK mode Intelligent Pay Phone Service, submit to described SCP through the checking back by described SMP, described SCP communicates with described SSP by the intelligent network application protocol (INAP) that has the FSK expansion module, finishes the Intelligent Pay Phone Service of FSK mode.

In the described intelligent public telephone system, described Service Control Point further comprises Service Database and voucher center.

Compare with current DTMF type intelligent public telephone system, the present invention has been owing to adopted the FSK mode, thereby significantly reduced the time overhead of system and terminal room protocol interaction.In fact, the simulation fsk signal of 1200HZ and 2200HZ digital modulation can transmit with the speed of 1200 bauds, and meaning that the per second theory can transmit 16 system number of characters can be up to 150.The DTMF mode that compares, the efficient that the FSK mode transmits are more than 10 times of DTMF transmission efficiency at least.The raising of the transmission efficiency of this germplasm makes intelligent public phone really have practical value.

The contrast of mutual time can be with reference to following table (fsk data be theoretical estimation) under the dual mode:

	Ordinary call (second) on average consuming time		Pass under the expense (second) on average consuming time
					Unmanned	Someone	Unmanned	Someone
	DTMF type intelligent public telephone system	＞7	Very short	2					＞4??
FSK type intelligent public telephone system					＜2	Very short	＜1	＜0.5

Description of drawings

Fig. 1 is the network structure of the intelligent public telephone system of employing FSK mode.

Fig. 2 is for adopting the intelligent public telephone system equipment structure chart of FSK mode.

The intelligent public phone implementation method schematic flow sheet that Fig. 3 proposes for the present invention.

Embodiment

As shown in Figure 1, be the intelligent public telephone system network structure of FSK mode.PSTN and having between the intelligent network of FSK transmitting-receiving processing capacity communicates with the NO.7 signaling method, the inner use of intelligent network with FSK transmitting-receiving processing capacity comprises that the expansion INAP operation of FSK transmitting-receiving processing capacity communicates, main dialing telephone terminal and have between the intelligent network of FSK transmitting-receiving processing capacity and adopt the predefined interaction protocol that transmits in the FSK mode to carry out information interaction, FSK uses 1200HZ commonly used and 2200HZ continuous phase binary modulated, transfer rate is the signal of 1200 bauds, wherein 1200HZ represents binary one, 2200HZ represents Binary Zero, and the transmitting-receiving work of fsk signal is finished by FSK-SSP; The FSK information interaction is directly used the speech channel of having set up between calling terminal and intelligent net system, promptly end-to-end speech channel FSK mode, and the environment of the information interaction of intelligent net system and terminal room and PSTN is irrelevant like this.The number of the account management and the statistics of chargeing of system are all finished at intelligent network.

Fig. 2 is a FSK type intelligent public telephone system equipment structure chart.In order to realize purpose of the present invention, use FSK type intelligent public telephone system and speech channel FSK exchange method can well solve problems of the prior art.Use FSK to transmit that information is modal at field of telecommunications and be " demonstrations of calling number ", in this scheme, cooperate by the signaling between end office (EO) and phone, by end office (EO) by the FSK mode to information such as phone transmission calling numbers.What intelligent public phone was different with calling display design thought is: during the calling number shows, the FSK signaling transmits and is based between end office (EO) and the phone set terminal, and intelligent public phone the intelligent call of initiating by phone by the SSP intercept process before, may pass through some general switch, contacting directly of setting up between SSP and phone is the contact in the speech channel.One of this moment, processing method was preferably, by the INAP operation of expansion intelligent network, realized the transmission-receiving function of FSK at SSP and SCP end, finished the mutual of system and terminal room in the mode of end-to-end speech channel FSK.When the present invention realizes, at first be to have solved the transmitting-receiving problem that intelligent network SSP and SCP do not support FSK, be the design of FSK type phone and the formulation that realizes system and terminal interaction agreement in speech channel FSK mode then.

Therefore, the intelligent net system among the present invention comprises Service Control Point, Service Switching Point at least, service creation environment (SCE), SMAP (SMAP) and service management point (SMP).Service switching point (Service Switch Point), it provides calls out the function that inserts intelligent network, can detect the IN service request, and communicate by letter with service control point (SCP) (Service Control Point), the request of SCP is made corresponding, allowed the service logic among the SCP to influence call treatment.Intelligent Network Application Protocol is used in communication between SSP and professional SCP, and the Intelligent Network Application Protocol of standard does not comprise the processing of FSK information transmit-receive, in protocol module INAP is expanded for this reason, makes it to support the FSK transmitting-receiving.Service management point (SMP) mainly is that the operation for Intelligent Pay Phone Service provides Service Data Management function, intelligent network management function and business statistics function.SMAP (SMAP), operator can use SMAP to revise the information of the configuration parameter and the management intelligent public phone user account card of Intelligent Pay Phone Service operation.Service creation environment (SCE), it provides the establishment and the systematic function of Intelligent Pay Phone Service logic and business datum, and the Intelligent Pay Phone Service logic of generation is loaded into SCP by SMP.

Fig. 3 is this method flow chart.Terminal is the intelligent public phone set terminal in the FSK type intelligent public telephone system, removes " access code " among Fig. 3 and still uses dtmf signal, beyond the access intelligent public telephone system; The out of Memory of the mutual use of intelligent net system and terminal room is the speech channel FSK load mode of use side opposite end all.When transmitting, FSK information adopts the notion of " frame " (or packets of information).During specific implementation, the continuous phase binary modulated that employing is commonly used, transfer rate is the 1200HZ of 1200 bauds and the fsk signal of 2200HZ.Wherein, the FSK frequency signal of 1200HZ represents 1, and the signal of 2200HZ frequency represents 0.Each FSK packets of information transmits generally should have synchronous boot symbol, information type, message length, the information content and verification and several sections.

Main dialing telephone is called out when called by intelligent public telephone system, has the SSP interception calling that the FSK up-downgoing is supported, after the SCP processing, set up the speech path connection between system and main dialing telephone earlier, the FSK type contact signal of sending out system and terminal room from the system that set up and the speech channel between phone by SSP, terminal phone with FSK up-downgoing biological function explore is sent out confirmation signal and is set up system and terminal room contact, finish interaction protocol with the latter two cooperations, comprise many information such as number of the account checking and function affirmation.After normally finishing alternately, SCP notifies phone set terminal to produce the call timing by the called off-hook event of collecting in the FSK mode, and the unified charging of intelligent network is carried out in calling; Calling party and the callee foundation of conversing.After called phone or the main dialing telephone on-hook, under the trend main dialing telephone, catch time various user profile of conversation in the FSK mode.

Claims (3)

1. the intelligent public telephone system based on frequency shift keying (FSK) mode comprises terminal, public telephone network (PSTN) and intelligent net system, it is characterized in that:

Described terminal comprises frequency shift keying (FSK) functional unit and control unit at least, and described terminal and described intelligent net system carry out information interaction, supports the bidirectional transmit-receive of FSK information, is the access point of customer call;

Described intelligent net system comprises at least:

Service creation environment (SCE) is used to generate FSK mode Intelligent Pay Phone Service and transmits and business operation to support FSK information;

Service management point (SMP) is used for providing management to the service operation of FSK mode intelligent public phone;

SMAP (SMAP) is the interface of user and described service management point (SMP);

Service Control Point has the Intelligent Pay Phone Service logic processing module of supporting the FSK mode;

Service Switching Point connects public telephone network (PSTN) and intelligent network;

Described SCE generates FSK mode Intelligent Pay Phone Service, submit to described SCP through the checking back by described SMP, described SCP communicates with described SSP by the intelligent network application protocol (INAP) that has the FSK expansion module, finishes the Intelligent Pay Phone Service of FSK mode.

2. intelligent public telephone system according to claim 1 is characterized in that: described Service Control Point further comprises Service Database (DB) and voucher center (VC).

3. Intelligent Pay Phone Service communication means of realizing based on the FSK mode is characterized in that comprising:

(1) the terminal phone enters intelligent public telephone system by dialling the intelligent public phone access code;

(2) the Service Switching Point interception is called out and is reported SCP to handle;

(3) Service Control Point by Service Switching Point according to carrying out the legitimacy flow verification between FSK mode and terminal phone;

(4) after checking is finished, effective called number that Service Control Point is sent according to the terminal phone, informing business exchange point (SSP) carries out call proceeding;

(5) if when continuing success and called receiver off-book, Service Control Point notifies phone set terminal to produce the call timing by the called off-hook event of collecting in the FSK mode, and calling is carried out intelligent network is unified to charge;

(6) after called phone or the main dialing telephone on-hook, under the trend main dialing telephone, catch time various user profile of conversation in the FSK mode.

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