(multiple) PVM packet voice processing board, management and control of the narrowband user board in the UA5000 chassis, which are the mainfunctions?
(single) By default, how many multicast programs can be viewed by each multicast user under the MA5680T at the same time?
(single) What is the statement that the GPON network is incorrectly protected against Type B?
(single) Among the access technologies of the access network, which of the following access modes can provide the largest access bandwidth?