... *Enterprise addresses book.private phone book application.l Support Headset interfaceSuitable for call center applications. l Supporting the POE and AC adapter power ... ), VLANSpeechHandle, Headset and Hands-free model availableSupport call centre by headsetsSeparated 9 Level Volume AdjustmentCall Processing Call Waiting, Call Queuing,Call Forward, Call Transfer, Call Holding, Call Pickup ...