... groups of incoming calls;3,Display and store 64 groups of outgoing calls;4,Phone Book with 140 groups memory5, ... number;10,Speed dial function;11,Display date, time, and with Alarm ring function; 12,Hold on music;13, ... PPPoE;14,Dynamic and static IP address;15,Support voice code format: G ... ,IP/ICMP,UDP/TCP/IP,RTP/RTCP);18,TFTP and Console function;19,IEEE 802.1P/802.1Q/ToS ...