Phones & Voicemail Hub To start, please select from the categories listed below: Home | End Users Hub | Phones and Voicemail | Poly Trio 8300 IP Conference Phone Trio Buttons and Hardware Placing Calls Answering Calls Placing Calls On Hold Setting Up Your Default Transfer Type Performing Blind Transfer Performing Consulted Tranfser DND Muting a Call Adjusting Speaker and Ringer Volume Poly Trio 8300