iSpeak is a team voice software. It is more powerful than TS (Teamspeak), and is a team voice software that fits domestic network conditions and player habits better. iSpeak is more compact than TS, allowing instant download and installation without needing to download and install a server like TS does. The bandwidth and memory usage of iSpeak are even smaller than those of TS. The interface of iSpeak is more aesthetically pleasing than TS's, and it also adds features like karaoke and personnel scheduling. IS has become an essential online communication tool for online games now, and its role is very significant. Whether it's for future team leveling, monster fighting, PK, or large-scale instances and national battles, appropriate communication and command with IS are indispensable. Therefore, the importance of IS cannot be overlooked.