... conference,call hold, hunting groups, and automated attendantCompatible with SIP based new generation voice terminals including smartphone, Pad ... line(immediate and delay)Dial-in System Authentication with PINAccess Authentication with caller’s phone numberExtension Feature Blind transfer, ... Stream: G.711uLaw, G.711aLaw, G.729A codecs; Echo cancellationFax: T.38 fax relay, G.711 pass-through ...