A method, comprising: receiving text data sent by a first user from a first user terminal; transforming, using a speech server, the text data into first speech data; sending, using a telecommunication server, the first speech data to a second user terminal that is associated with a preconfigured phone number, and wherein the method further comprises: selecting the preconfigured phone number from a plurality of preconfigured phone numbers, wherein the plurality of preconfigured phone numbers corresponds to a plurality of time periods, wherein the selecting of the preconfigured phone number comprises: determining a time associated with receiving the text data; and selecting the preconfigured phone number from the plurality of preconfigured phone number based on the time associated with receiving the text data and the plurality of time periods; initiating a call, using the telecommunication server, to the second user terminal via the preconfigured phone number; wherein the sending of the first speech data to the second user terminal comprises: sending, using the speech server, the first speech data to the telecommunication server; and instructing the telecommunication server to send the first speech data to the second user terminal in response to a determination that the call to the second user terminal is put through; the method further comprising: receiving second speech data sent from the second user terminal in response to the first speech data; and sending the second speech data to the first user terminal, comprising: sending a speech file comprising the second speech data to the first user terminal; and playing the speech file on the first user terminal. receiving text data sent by a first user from a first user terminal; transforming, using a speech server, the text data into first speech data; sending, using a telecommunication server, the first speech data to a second user terminal that is associated with a preconfigured phone number, and wherein the method further comprises: selecting the preconfigured phone number from a plurality of preconfigured phone numbers, wherein the plurality of preconfigured phone numbers corresponds to a plurality of time periods, wherein the selecting of the preconfigured phone number comprises: determining a time associated with receiving the text data; and selecting the preconfigured phone number from the plurality of preconfigured phone number based on the time associated with receiving the text data and the plurality of time periods; initiating a call, using the telecommunication server, to the second user terminal via the preconfigured phone number; wherein the sending of the first speech data to the second user terminal comprises: sending, using the speech server, the first speech data to the telecommunication server; and instructing the telecommunication server to send the first speech data to the second user terminal in response to a determination that the call to the second user terminal is put through; the method further comprising: receiving second speech data sent from the second user terminal in response to the first speech data; and sending the second speech data to the first user terminal, comprising: sending a speech file comprising the second speech data to the first user terminal; and playing the speech file on the first user terminal. selecting the preconfigured phone number from a plurality of preconfigured phone numbers, wherein the plurality of preconfigured phone numbers corresponds to a plurality of time periods, wherein the selecting of the preconfigured phone number comprises: determining a time associated with receiving the text data; and selecting the preconfigured phone number from the plurality of preconfigured phone number based on the time associated with receiving the text data and the plurality of time periods; determining a time associated with receiving the text data; and selecting the preconfigured phone number from the plurality of preconfigured phone number based on the time associated with receiving the text data and the plurality of time periods; initiating a call, using the telecommunication server, to the second user terminal via the preconfigured phone number; wherein the sending of the first speech data to the second user terminal comprises: sending, using the speech server, the first speech data to the telecommunication server; and instructing the telecommunication server to send the first speech data to the second user terminal in response to a determination that the call to the second user terminal is put through; sending, using the speech server, the first speech data to the telecommunication server; and instructing the telecommunication server to send the first speech data to the second user terminal in response to a determination that the call to the second user terminal is put through; the method further comprising: receiving second speech data sent from the second user terminal in response to the first speech data; and sending the second speech data to the first user terminal, comprising: sending a speech file comprising the second speech data to the first user terminal; and playing the speech file on the first user terminal. sending a speech file comprising the second speech data to the first user terminal; and playing the speech file on the first user terminal.