FIELD: communication. SUBSTANCE: method involves use of custom telephone system with identical connection for transmission of voice signals and data, introduction of additional digital radio communication channel with different connection types for transmission of voice and data signals using new call commands which enter corresponding connection type. New commands may be used for calling from mobile set which has possibility to transmit voice and data signals but lacks possibility to transmit them simultaneously. In addition they may be used for starting simultaneous servicing using voice and data signals. EFFECT: increased functional capabilities. 14 cl, 4 dwg
