correspond to the voice signal fig4 depicts a block diagram of ivr system 104 according to an embodiment of the present invention as depicted in fig4 ivr system 104 comprises receiving means 42 for receiving an instruction sequence from user equipment generating means 44 for generating in accordance with the instruction sequence at least one voice signal and at least one message that can be seen by a user the at least one message corresponding to the at least one voice signal respectively and transmitting means 46 for transmitting the at least one message and the at least one voice signal to the user equipment in order in an embodiment the at least one message each comprises a first flag 302 310 that can be used for judging whether or not the at least one message corresponds to the at least one voice signal respectively in another embodiment the at least one first flag 302 310 comprises a key sequence in which the user operates the keys on the user equipment to input the instruction sequence in yet another embodiment the at least one message each further comprises a second flag 416 418 that can be used for judging whether or not the at least one message comes from the ivr system the at least one message in one embodiment is transmitted to the user equipment in the form of short message service message in another embodiment the at least one message is transmitted to the user equipment in the form of multimedia messaging service message fig5 depicts a block diagram of user equipment according to an embodiment.