FIELD: communications engineering. SUBSTANCE: data is transmitted to company's information system by means of mobile telephone set connected to communication line incorporating mobile entities and data reception by same mobile telephone set is acknowledged by company's information system. Preset number dialed by means of mobile telephone set is conveyed to intelligent network center and decoded to obtain data which is transmitted to company's information system during connection. Intelligent network center uses calling subscriber number identification to check calling subscriber for authority to use services and to find out what is the information system and company data was sent to. Intelligent network center functions to transmit dialed number, that of calling subscriber, and company's address, preferably using communication network signaling facilities, to voice server which is, essentially, computer capable of identifying telephone number and shaping voice messages. Voice server converts dialed number into data and transmits this data and calling-subscriber number to company's information system using data transmission network preferably according to TCP/IP protocol. Company's information system functions to store data and to shape return message that includes acknowledgement of data reception and, probably, additional information, as well as to transmit this message to voice server using data transmission network. EFFECT: enhanced speed of data transmission. 8 cl, 3 dwg
