... and static IP address Support voice code format: G.711A/U, G.723.1, G.729, G.726;auto-select User ... ) TFTP,FTP and HTTP IEEE 802.1P/802.1Q/ToS u 10 Base T/100Base TX DNS Transfer calls function Three-way ... )4,Upgradeable software;5,Support voice code format: G.711A/U, G.723.1, G.729A/B, G.726;6,Signaling ... tone of ITU-T standard, DTMF;7,Support dialing standard base on E.164 code;