CN1342018A

CN1342018A - Network facsimile exchange system

Info

Publication number: CN1342018A
Application number: CN 01128679
Authority: CN
Inventors: 王勇; 武元新
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-16
Filing date: 2001-10-16
Publication date: 2002-03-27

Abstract

The invention discloses an exchanging system between network and fax. Each person can own a 'fax machine' without need of telephone and network dual lines. The technique schema is as follows. One networked computer is chosen as a server where software on server end is installed and it connects to a modem that provides fax function. The information about user and management database for fax machine is stored in the server. The software on client end is stored in other computer as a client computer on a local area network. A management database for fax machine and technology book database customized by user is installed in client computer. The server makes calling control and networking communication through software on server end. The client computer carries networking communication through software on client end. Thus it realizes the mode of transferring fax information from PSTN telephone net to computer local area network and from computer local area network to PSTN telephone net. The invention possesses features of lower cost, full of functions, security, easy to install and to operate.

Description

Switching system

Technical field: the present invention relates to the integrated communication system of a kind of computer and phone, especially a kind of with the professional technology platform that merges with computer network of telefacsimile.

Application background: traditional fax merges mutually with phone, need be by the telephone switching system work that comprises that telephone exchange, facsimile machine, transmission line are formed by connecting.Along with popularizing and development of internet technology of PC, the computer user can exchange, share the data of various forms such as text, voice, image, video on local area network (LAN).Many company and enterprises, scientific research institutions have all set up internal lan, sharing and increase work efficiency, reduce office cost with the interchange that makes things convenient for information and resource.But in the intensive working environment of the such personnel of similar office building, same room generally has many people to handle official business simultaneously, and each staff has the computer of controlling oneself, and all has a facsimile machine unrealistic and will allow on everyone desk.If an office has only a facsimile machine, the phenomenon of fax sending and receiving personnel queuing then might usually appear, and also need someone distribution of faxing, the fax content is obtained by unrelated person easily, and confidentiality is poor; If office all adorns a facsimile machine for each staff, then cost is higher, and telephone network and computer network dual wired increased the construction cost of network and management, maintenance cost.

Technical scheme: the objective of the invention is to design a kind of network facsimile exchange system, public switched telephone network (PSTN) and LAN (Local Area Network) are organically merged, form a new network fax switching system that possesses the fax function of exchange, do not needing under the dual wired condition of phone, network, realize one of staff " facsimile machine ", and compartment for crew does not influence each other, and increases work efficiency and confidentiality.

Technical scheme of the present invention is that the modulator-demodulator Modem of employing band facsimile function is that pstn telephone net and local area network (LAN) couple together with public switched telephone network (PSTN) (Public Switched Telephone Network), the interchange of the information of carrying out makes the computer on each local area network (LAN) have the function of facsimile machine simultaneously to realize real Fax-to-Person.

The object of the present invention is achieved like this: a kind of network facsimile exchange system, comprise server, client computer, transmission line, it is characterized in that: described server is a network computer that server software (also client software can be installed simultaneously) is installed, it links to each other with the modulator-demodulator Modem of band facsimile function, deposit the network address of each computer of local area network (LAN) and the User Information Database of fax extension sign indicating number corresponding relation on it, fax managing database that telefax is managed etc., if it has installed client software, then it also has the function of client computer; Described client computer is meant the network computer that client software has been installed, deposit fax managing database and this user-defined phonebook database that this telefax is managed on it, network computer all has network address, and the corresponding fax extension sign indicating number of its network address can be found in server user's information database; Described transmission line is the computer network data line; Described network computer is meant network interface card is installed, physically by the interconnective computer of network layout; The modulator-demodulator Modem of described band facsimile function is meant the modulator-demodulator that the pstn telephone net is had monitoring and control ability and fax sending and receiving ability.In local area network (LAN), select a network computer Modem to be installed as server, the LINE of Modem (telephone wire input) port links to each other with the telephone wire of PSTN, built-in Modem directly is inserted on the expansion slot on the server master board, external Modem is connected peripheral port such as serial ports, parallel port and the USB mouth etc. of server by data wire, and All other routes, equipment in the local area network (LAN) all remain unchanged.The network facsimile exchange system server is finished two parts work by software, and the one, call out control, i.e. the service that telephone service provider is provided conducts interviews, as the pstn telephone net is monitored and control and fax sending and receiving; The 2nd, network service is promptly carried out the transmission of computer network data by network interface card and local Network transmission line; Client is also carried out network service by software, promptly carries out the transmission of computer network data by network interface card and local Network transmission line.

Network facsimile exchange system of the present invention is divided into two kinds of patterns by the flow direction of facsimile message: outside to the inside fax be the pstn telephone net-the LAN (Local Area Network) pattern; Inner to the outside fax be LAN (Local Area Network)-pstn telephone net pattern.

1.PSTN telephone network-〉 the LAN (Local Area Network) pattern: during the incoming call of outside line fax, earlier by the pickup of network facsimile exchange system server, voice suggestion facsimile transmission people dials the fax extension sign indicating number, server affirmation fax extension sign indicating number exists then receives faxes, server is transmitted to corresponding client computer according to the client information corresponding to this fax extension sign indicating number of its preservation with the complete fax that receives then.The client computer start then normally receives, and client computer is not started shooting then to fax and temporarily is kept on the server, extracts fax for dialling in the client computer of having access to or open oneself by remote phone after the user to server.After fax is extracted, the fax on the server will be deleted automatically.

LAN (Local Area Network)-pstn telephone net pattern: when faxing when operation on the client computer of internal staff at oneself, at first, the network facsimile exchange system server receives that the request back receives facsimile data and the purpose fax number that client is sent, whether the line is busy for judgement purpose this moment fax then, free time then sends fax, and the line is busy then reattempts transmission after a while.

Network facsimile exchange system of the present invention only needs local Webweb network computer is installed special-purpose server software, and connect general modulator-demodulator Modem with facsimile function one Daepori open network computer has been become can realize the fax transmitting-receiving, long-range dial in to fax inquire about the Fax Server of functions such as having access to; To just making it become fax client computer behind the special-purpose client software of network computer installation with fax transmission-receiving function, client computer there is not additional hardware requirement, do not need other specialized hardware cards, making under the extremely low situation of cost---the Modem hardware cost of a tool facsimile function can hang down and reach 150-200 unit, has realized facsimile machine of LAN subscriber staff.In addition, the present invention also has following characteristics:

Easy for installation.Do not need existing network infrastructure is adjusted, the Modem of mounting strap facsimile function and present networks fax switching system server software are installed client-side software and are got final product as server on only need a computer in existing local area network (LAN) on other computers in local area network (LAN).

Easy to use.Operations such as all fax transmitting-receivings and management are all carried out on computers by keyboard and mouse.

Practicality and strong security.The transmitting-receiving of fax, management are carried out on this machine, have more confidentiality than public facsimile machine.

Description of drawings:

Fig. 1 is a network facsimile exchange system application structure schematic diagram.

Fig. 2 is the network facsimile exchange system fundamental diagram.

Fig. 3 is a fax incoming call flow chart (server program part).

Fig. 4 is a fax exhalation flow chart (server program part).

Fig. 5 is a fax exhalation flow chart (client program part).

Fig. 6 is that fax receives flow chart (client program part).

The specific embodiment:

Such as Fig. 1, PSTN (PSTN) by Modem has been installed server computer and LAN (LAN) is connected. Fax among the PSTN (PSTN) can pass through Every client computer during server is through, every client computer also can be passed through among the LAN (LAN) Server sends fax to PSTN (PSTN). (public telephone is handed over so just to make PSTN Draping) and LAN (LAN) organic integration get up.

Such as Fig. 2, the network facsimile exchange system server comprises two parts task, and the one, call out control, namely Use Telephony Application Programming Interface TAPI (Telephony Application Programming Interface), message application DLL MAPI (Message Application Programming Interface) writing application program controlling Modem provides telephone service provider Service conduct interviews, such as the transmitting-receiving that the pstn telephone net is monitored and controlled and faxes; The 2nd, Network service is namely used windows socket (Winsock API) to write application program and is passed through network interface card Carry out the transmission of computer network data with the local Network transmission line. The network facsimile exchange system client computer is Using windows socket (Winsock API) to write application program passes by network interface card and LAN Defeated line carries out network service.

Fig. 3 and Fig. 6 provided the pstn telephone net-flow process of LAN pattern, when outside line passes During true incoming call, server voice suggestion calling party selects, if the calling party selects to send a fax then caller Side's input fax extension code is deposited if the whois lookup User Information Database is found the fax extension code , then server is received faxes, then on-hook; Server extracts the corresponding network address of fax extension code, Connect with the purpose client computer, server will be faxed and be sent to client computer if client computer is started shooting then; The client Machine operation client-side software is then successfully received faxes if successfully connect with server; If client computer Start has moved client software but not to be had fax and arrives then the client software running background and wait for; If client computer Not start, server will be faxed temporarily to store for the user and be extracted later on or have access to; If the fax extension code is not Exist, then tell the caller rs number mistake, ask on-hook; If the calling party selects fax to have access to, then require caller The side provides password, if password authentification is transmitted the purpose fax number by the input of prompting user then, server to This purpose fax number is transmitted fax; If the password authentification failure then requires calling party's on-hook.

Fig. 4 and Fig. 5 provided LAN-flow process of pstn telephone net pattern, work as LAN When the user called out the pstn telephone net, LAN subscriber was that client computer connects with server earlier, if connect Be connected into merit, client computer sends facsimile data and purpose fax number, server call accepted visitor to server The data of then receiving faxes after the request of family machine and purpose fax number, and check whether the telephone wire of breathing out is empty In the spare time, if the free time then sends fax, if telephone wire is busy, then reattempt after a while transmission.

The present invention is mainly for the company and enterprise that sets up LAN, scientific research institutions, provide a kind of The technology platform that on the functional plane telefacsimile business and computer network is merged can be fully Use the corresponding function of fax telephone and computer, use for final commerce and bring practical interests, it Be particularly useful for setting up LAN but since some cause specifics can not all go up by all computers The company and enterprise of Internet, scientific research institutions use the present invention can realize that every machine can both receive and dispatch biography Very.

The present invention utilizes existing Modem with facsimile function and network computer, saved facsimile machine and The fax consumptive material, cost 80%-90%. As the price of existing Modem (the people of 120-150 unit And the price of Common Facsimile Machine is at least more than 1000 yuan (RMB) people's coin).

Claims

1. network facsimile exchange system, comprise server, client computer, transmission line, be divided into outside to inside fax pattern, inner to outside fax pattern, it is characterized in that: described server is a network computer that server software (also client software can be installed simultaneously) is installed, it links to each other with the modulator-demodulator Modem of band facsimile function, deposit the network address of each computer of local area network (LAN) and the User Information Database of fax extension sign indicating number corresponding relation on it, fax managing database that telefax is managed etc., if it has installed client software, then it also has the function of client computer simultaneously; Described client computer is meant the network computer that client software has been installed, deposit fax managing database and this user-defined phonebook database that this telefax is managed on it, network computer all has network address, and the corresponding fax extension sign indicating number of its network address can be found in server user's information database; Described transmission line is the computer network data line; Described outside to inside fax pattern be meant Public Switched Telephone Network-LAN (Local Area Network) facsimile transmission pattern; Described inside to outside fax pattern be meant LAN (Local Area Network)-pstn telephone net facsimile transmission pattern.

2. network facsimile exchange system as claimed in claim 1 is characterized in that described network computer is meant network interface card is installed, physically by the interconnective computer of network layout.

3. network facsimile exchange system as claimed in claim 1 is characterized in that the modulator-demodulator Modem of described band facsimile function is meant the modulator-demodulator that the pstn telephone net is had monitoring and control ability and fax ability; The LINE of Modem (telephone wire input) port links to each other with telephone wire, and built-in Modem directly is inserted on the expansion slot on the server master board, and external Modem is connected peripheral port such as serial ports, parallel port and the USB mouth etc. of server by data wire.

4. network facsimile exchange system as claimed in claim 1, it is characterized in that described server software and client-side software are the special-purpose softwares of realizing two kinds of patterns of described facsimile message transmission, server software is finished two parts work, the one, call out control, the i.e. service that telephone service provider is provided conducts interviews, as the pstn telephone net is monitored and control and fax sending and receiving; The 2nd, network service is promptly carried out the transmission of computer network data by network interface card and local Network transmission line; Client software is finished network service, promptly carries out the transmission of computer network data by network interface card and local Network transmission line.

5. network facsimile exchange system as claimed in claim 1, it is characterized in that described pstn telephone net-server end and the client-side software execute process of LAN (Local Area Network) facsimile message transmission mode be: during the incoming call of outside line fax, earlier by the pickup of network facsimile exchange system server, voice suggestion facsimile transmission people dials the fax extension sign indicating number, server affirmation fax extension sign indicating number exists then receives faxes, calling party's on-hook, server is transmitted to corresponding client computer according to the client information corresponding to this fax extension sign indicating number of its preservation with the complete fax that receives; The client computer start then normally receives, and client computer is not started shooting then to fax and temporarily is kept on the server, extracts fax for dialling in the client computer of having access to or open oneself by remote phone after the user to server; After fax is extracted, the fax on the server will be deleted automatically.

6. network facsimile exchange system as claimed in claim 1, it is characterized in that described LAN (Local Area Network)-server end and the client-side software execute process of pstn telephone net pattern be: when faxing operation on the client computer of internal staff at oneself, at first, the network facsimile exchange system server is received facsimile data and the purpose fax number that request back subscribing client is sent, whether the line is busy to judge the telephone wire of breathing out this moment then, free time then sends fax, and the line is busy then reattempts transmission after a while.