Enter length and string: 
T
    XMODEM: String CRC, Packet CRC=    0x1a71   0x0
      X.25: String CRC, Packet CRC=    0x1b26   0xf0b8
 CRC-CCITT: String CRC, Packet CRC=    0x14a1   0x0
Enter length and string: 
CatMouse987654321
    XMODEM: String CRC, Packet CRC=    0xe556   0x0
      X.25: String CRC, Packet CRC=    0xf56e   0xf0b8
 CRC-CCITT: String CRC, Packet CRC=    0xc28d   0x0
Enter length and string: 
Normal completion