A.IOI高 B.PB不好 C.有擁塞 D.傳輸質(zhì)量不好
A.CALL-SETUP=SUCCESS-RATE B.RF-LOSSES-TCH C.PATH-BANLANCE D.INTF-ON-IDLE
A、DC-27V; B、DC-48V; C、AC~240V; D、DC+36V