This VoIP TA lets you allocate network resources while guaranteeing Quality of Service (QoS). Network bandwidth management delivers smooth and clear voice communication over the Internet while increasing productivity and efficiency by tailoring your system to specific demands such as time-sensitive VoIP and multimedia applications. DEVICE INTERFACES 2 RJ-11 FXS phone ports 2 RJ-45 10/100BASE-TX LAN port with auto-MDI/MDIX GENERAL FEATURES 3-way call conference (local mixer) Call-parking Call Back on Busy Digit Map Direct IP-to-IP Call without SIP Proxy Echo cancellation (Echo tail 64ms) Hot Line and Warm line calling Includes a phone book with speed dial Music on hold