wlan0     IEEE 802.11bgn  ESSID:"CASA"  
          Mode:Managed  Frequency:2.447 GHz  Access Point: E8:DE:27:73:B8:71   
          Bit Rate=15 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=34/70  Signal level=-76 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:6   Missed beacon:0