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compatible ip phoneIP Phone SPH-2000 connects standard telephones and fax machines to IP-based data networks, IP telephony service providers and enterprise users can offer traditional and enhanced communication services via the customers broadband connection to the Internet or Local Area Network (LAN).With the SPH-2000, individual and companies are able to protect and extend their past investments in telephones, conference speakerphones and fax machines as well as control their migration to IP with an extremely affordable, incremental investment.HighlightsKey Features:     Support SIP 2.0, TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS,DHCP, NTP/SNTP, PPPoE, STUN, TFTP ect     Built-in router, NAT, Gateway      Powerful digital signal processing (DSP) to ensure superb audio quality: advanced adaptive jitter control and packet loss concealment technology     Support popular vocoders including G.723, G.729A, G.711 (a-law and u-law),G.726 (40K/32K/24K)     Support STUN and symmetric RTP for NAT     Support Caller ID/name display or block, Hold, Call Waiting, Flash, Call Transfer(Blind and Consultative), in-band and out-of-band DTMF, Dial Plans, three way conference, etc     Support Call Waiting Caller ID with Name/Number..     Support G.711 fax pass through     Support Silence Suppression, VAD (Voice Activity Detection), CNG (ComfortNoise Generation), Line Echo Cancellation (G.168), and AGC (Automatic GainControl)     Support standard encryption and authentication (DIGEST using MD5 andMD5-sess)     Support automated NAT traversal without manual manipulation of firewall/NAT     Support device configuration via web browser, or downloading encrypted configuration file through TFTP or HTTP     Support firmware upgrade via TFTP FTP or HTTP     Interoperable with various 3rdparty SIP end user device, Proxy/Registrar/Server,.and gateway products     Advanced 32bit embed MCU + DSP technology to ensure superior audio quality

Sinoco Series comparison table
Model	Ethernet Ports	DHCP/NAT/Router	FXS Port	Remote Configuration
SPH-2000	2 RJ45(LAN/WAN)	Yes	No	Yes
SGW-2100	2 RJ45(LAN/WAN)	Yes	1	Yes
SGW-2200	2 RJ45(LAN/WAN)	Yes	2	Yes

compatible ip phone