Модуль AT-AR021S Allied Telesis Basic Rate ISDN (S) Port Interface Card (PIC), 1 BRI port w/ integrated NT-1, supports 2 channels each at 64Kbps; AR400/700 Series Routers and AR040 NSM (990-04251-00)
Модуль AT-AR021S Allied Telesis Basic Rate ISDN (S) Port Interface Card (PIC), 1 BRI port w/ integrated NT-1, supports 2 channels each at 64Kbps; AR400/700 Series Routers and AR040 NSM (990-04251-00)