Cesller cheap VoIP IP SIP Phone ip phone

Features

• Support SIP 2.0 (RFC3261) and correlative RFCs
• Codec:G.711 A/u, G.723.1, G.729AB, G.722.1, G.726-32
• Echo cancellation: Support G.168, and Hands-free can support 96ms, Hand free Speaker Phone
• Support Voice Gain Setting, VAD, CNG
• DTMF:Support SIP info, DTMF Relay, RFC2833
• Full duplex hands-free speakerphone
• Support 2 SIP lines. Can connect to SIP1 and SIP2 server at the same time
• SIP application: support Call forward/ transfer/ holding/ waiting /3 way talking/paging and intercom/pickup/join call/click to dial/call back
• SIP support SIP domain, SIP authentication (none, basic, MD5), Peer to Peer/ IP call
• Call control features: Flexible dial map, Hotline, Empty calling reject, Black list for reject authenticated call, limit call, No disturb, Caller ID
• NAT transverse:support STUN client
• Incoming calls / Outgoing calls / Missing calls. Each support 100 records
• Support Phonebook 500 records
• Support conference
• 10 kind of ring type
• Support SRTP
• Support MWI

Network Features

• WAN/PC: Support Bridge
• Support PPPoE for XDSL
• Support DHCP Client on WAN
• Support VLAN (optional: voice vlan/data vlan)
• QoS with DiffServ
• Support main DNS and secondary DNS server
• Support SNTP Client, Firewall
• Network tools in telnet server: Including ping, trace route, telnet client

Maintenance and Management

• Web ,telnet and keypad management
• Management with different account right
• Upgrade firmware through POST mode
• Upgrade firmware through HTTP, FTP or TFTP.
• Telnet remote management/Upload/download setting file
• Safe mode provide reliability
• Support Auto Provisioning (upgrade firmware or configuration file)
• Support Syslog