Huawei E960 HSDPA User Manual page 19

Network Key Rotation Interval: It is used to set how long a network key is
dynamically changed. By default, it is 0. To disable this function, you can set the value to
0 or Null.
WEP
Wireless Equivalent Privacy, a 64-bit or 128-bit data encryption method. The 128-bit WEP
encryption provides higher security level.
Network key 1: You can enter 5 ASCII characters or 10-character hexadecimal numeral to
form a 64-bit key. You can also enter 13 ASCII characters or 26-character hexadecimal
numeral to form a 128-bit key.
13