public void MuteSpker() { LogManager.SystemLog.Debug(string.Format("Start UC_SDK_MuteSpker()")); int iRet = UCInterface.UC_SDK_MuteSpker(); if (iRet != 0) { LogManager.SystemLog.Error(string.Format("UC_SDK_MuteSpker = {0}", iRet)); } LogManager.SystemLog.Debug(string.Format("End UC_SDK_MuteSpker")); }