A.路由功能 B.交換功能 C.路由和交換功能 D.均不支持
A.SUP2 B.SUP720 C.RSP720 D.SUP32
A.9600 baud,8 databits,1 stop bits,parity B.9600 baud,8 databits,1 stop bits,noparity C.115200 baud,8 databits,1 stop bits,parity D.115200 baud,8 databits,2 stop bits,noparity