private void channelExceptionHandler(ChannelException ex) {
        int tmpCode = ex.code;
        if (0 == tmpCode) {
            tmpCode = CHANNEL_SDK_SYS;
        }
        
        this.errcode = tmpCode;
        if (this.errcode >= 30000) {
            this.errmsg = ex.getMessage();
        }
        else {
            this.errmsg = arrayErrorMap[this.errcode] ;
        }
	}