Transfer voip protocol sip 2.0 network protocol http, bootp, ftp, tftp, ieee 802.1q, *ieee 802.1x codec g.723.1, g.729 a/b, g.711 a/u, g.722 qos tos, jiffer buffer, vad, cng, g.168 (32ms) network 2 × rj45 10/100m ethernet interfaces (lan/pc) ip assignment: static ip, dhcp, pppoe dns client, vpn(l2tp...