/// <summary>
/// 切换音频视频模式
/// </summary>
/// <param name="call">呼叫处理器,为空时为当前呼叫</param>
/// <param name="callMode">呼叫类型</param>
public void ChangeCallType(CallMode callMode)
{
var errno = PlcmProxy.ChangeCallMode(this.CallHandle, callMode);
if (ErrorNumber.OK != errno)
{
throw new Exception("切换音频视频模式失败，ErrorNo=" + errno);
}
log.Info(string.Format("呼叫{0}改变模式{1}", CallName, callMode));
}
