... the same connection to a LAN or the Internet. IP Phone FeaturesThe comprehensive software features and superior voice coding ... platforms, including ZTE, Huawei, SONUS, Cisco, Lucent, Nortel, Siemens, UT Starcom, etc.¨ Supplementary Services-Call transfer(Blind transfer and ... ¨ RTP/RTCP: RFC3550(Compatible RFC1889/RFC1990)¨ SDP: RFC2327¨ TCP/IP, PPPoE, DHCP, NAT, Bridge, IEEE802.1p/Q¨ SNMP,TFTP ...