(1) SIP IP Phone with 3 way calling conference

(2) Supports 2 concurrent calls

(3) 3-way conference call

(4) Supports Auto Batch Provision/Configuration through HTTP and TFTP

(5)Multiple Domain Registration (up to 3 different service domains)

(6) Caller ID Display (CID) (7) DTMF Relay: Support in-band RTP voice mixing and out-band DTMF over RTP (RFC2833)

(7) Support SNMP

(8) NAT & firewall bypass via STUN or pre-configured NAT gateway port mapping

(9) Support IP ToS and 802.1P Class-of-Service