... providing high priority to voice stream801.11b/g/n with double antennaDual USB2.0s for 3G dongle, supporting WCDMA ... MAC filtering, website filteringIP PBX features:Auto Attendant IVR with time schedule, queuing, operator handling, soft console for ... line(immediate and delay)Dial-in System Authentication with PINAccess Authentication with caller’s phone numberExtension Feature Blind transfer, ...