USB modem gives strange response

RouterOS Beginner Basics
1

Hi, guys! Please help me understand, what does it means.

I go through tutorial about USB modem and this is what I get:

MikroTik RouterOS 5.23 (c) 1999-2013 > http://www.mikrotik.com/

[admin@MikroTik] > /system resource usb print

DEVICE VENDOR NAME SPEED

0 1:1 RB400 EHCI 480 Mbps
1 1:5 HUAWEI Technology HUAWEI Mobile 480 Mbps
[admin@MikroTik] > /port print
Flags: I - inactive

NAME CHANNELS USED-BY BAUD-RATE

0 usb1 4 9600
[admin@MikroTik] > /system serial-terminal usb1 channel=3

[Ctrl-A is the prefix key]

^RSSI:16

^BOOT:33388506,0,0,0,20

^RSSI:16

^RSSI:16

^RSSI:19

^RSSI:19

^RSSI:19

^RSSI:19

^RSSI:19

^RSSI:19

^BOOT:33388506,0,0,0,20

2

Modems has enabled periodic status messages.
Try AT^CURC=0 to disable.