D-LINK DPH-120S, VoIP Phone, Support Call Control Protocol SIP, P2P connections, 2- 10/100BASE-TX Fast Ethernet, Acoustic echo cancellation(G.167), QoS IEEE 802.1Q & IEEE 802.1p Compliant and DiffServ(DSCP), Full range VLAN ID Support, Class of Service Support by VLAN Tag, Adjustable speaker / ringer volume control, LCD display, Call Supplementary
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