nsngsm中，F(xiàn)EATURE和LICENCE有什么不同，ZW7I指令中，F(xiàn)EA,FULL.LIC、fstate這些都代表什么意思

LICENCE CODE:..............BSC00138

    LICENCE NAME:..............GPRS Licence Control

    LICENCE FILE NAME:.........G4207581

    SERIAL NUMBER:.............1008040143352

    ORDER IDENTIFIER:..........1104741216

      TARGET NE TYPE:............BSC

    LICENCE STATE:.............ACTIVE LIMITED

    START DATE:................2010-10-19

    EXPIRATION WARNING PERIOD:.30

    LICENCE CAPACITY:..........100

    EXPIRATION WARNING PERIOD是指使用期限是30年？TARGET NE TYPE:............BSC是什么意思？