1. A method of operating a server for supporting a translation-based communication service, the method comprising: establishing a communication service channel between a transmitter-side terminal and a receiver-side terminal; receiving at least one of a text in a first language and a voice signal in the first language collected by the transmitter-side terminal with voice-related characteristic information; translating the at least one of the text in the first language and the voice signal in the first language into a second language; generating at least one of a translation text in the second language and a translation voice signal in the second language, wherein the voice-related characteristic information is used to generate the translation voice signal in the second language with a pitch and a tone similar to the voice signal in the first language; and transmitting at least one of the generated translation text in the second language and the translation voice signal in the second language to the receiver-side terminal.