... ,ROHS,FCC approved 2* Ports:4 LAN,4 Gbit,2 FXS 3* 11n 300Mbps 4* Supports ITU-T G.984 GPON standard, TR- ... specifications- G.984.3 Transmission convergence layer specifications- G.984.4 Management and control interface Voice Features- SIP (RFC 3261)- SDP ... Waiting- Call Forwarding (Unconditional/Busy/No Answer)- Call Transferring- Three Way Conference- Call Block- DND (Do Not Disturb)- MWI- Call Barring ...