FIELD: communications engineering. SUBSTANCE: method includes shaping of received information signal at preset time intervals before response message is sent in response transmission mode upon reception of call message, shaping of additional information signal when response message is not transmitted until preset time interval reading point indicating change of mode is obtained, and transfer to no-response transmission mode upon preset time interval without transmitting response message. EFFECT: provision for responding to received message within mode- change interval due to shaping information signal during every preset time interval. 2 cl, 3 dwg
