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(Single choice) In GPON systems, in order to prevent network monitoring, the most common method is.
The number of users under the OLT can also determine whether the VLA is single-layer or dual-layer VLA. Single-layer VLANs can be used when the number of users is small, and dual-layer VLANs must be used when the need to distinguish services and the number of users is second to ().
(Radio) In the FTTB/C scenario, ONU is used as an AG device to access the phone, and there is no possible cause of sound failure for SIP protocol off-hook
(Single choice) When planning qos, it is necessary to plan reasonably according to the business, and adopt the () scheduling mode for high-priority businesses.