| FeaturesSupport SIP 2.0 (RFC3261) and correlative RFCsSupprt IAX2Codec:G.711A/u, G.7231 high/low, G.729, G.722Echo cancellation: Support G.168, and Hands-free can support 96ms, Hand free Speaker PhoneSupport Voice Gain Setting, VAD, CNGFull duplex hands-free speakerphoneNAT transverse:support STUN clientSIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/ IP callSIP support Pubic & Private server. Can connect to Public SIP and Private SIP server at the same timeDTMF:Support SIP info, DTMF Relay, RFC2833SIP application: support Call forward/transfer/holding/waitingCall control features: Flexible dial map, Hotline, Empty calling reject, Black list for reject authenticated call, limit call, No disturb, Caller ID.Support three way conference callSupport voice record, 240 seconds max or 3 record max, user-defined record prompt with 1 minute max Support Phonebook 500 recordsIncoming calls / Outgoing calls / Missing calls. Each support 100 records.Support conference and voice record on SIP server8 kind of ring typeEnglish, Spanish, Czechoslovak alternativeNetwork FeaturesWAN/LAN: Support Bridge and Router modelSupport basic NAT and NAPTSupport PPPoE for xDSLSupport DHCP Client on WANSupport DHCP Server on LANSupport VLAN (optional: voice vlan/data vlan)QoS with DiffServSupport DMZSupport VPN (L2TP/UDP TUNNEL)Support DNS Relay, SNTP Client, FirewallNetwork tools in telnet server: Including ping, trace route, telnet clientMaintenance and ManagementWeb ,telnet and keypad managementManagement with different account rightUpgrade firmware through POST modeUpgrade firmware through HTTP, FTP or TFTP.Telnet remote management./ Upload/download setting fileSafe mode provide reliabilitySupoort Auto Provisioning (upgrade firmware or configuration file)Support SyslogDECT FEATURES1.88~1.90GhzDECT cordless,VoIP and PSTN supportedCall log and phonebookStand by time 120 hoursTalk time 5 hoursCommunication range 300 MeterPSTN call is defaultSupport up to 6 handsetCall transfer between handsets | 
