voice over ip phone function description：
The NXD-803 is an IP phone that converts analog voice packets for transmission over the Internet to send and receive phone calls. NXD-803 series IP phone features superb voice quality, high level of integration, compactness, and its plug and play! It supports the SIP protocol and H323 industry standards and is compatible with various SIP compliant devices and software on the market. The NXD-803 is ideal for home and office use because of its user-friendly nature and multiple voice features that include Caller ID, Call Transfer, Speakerphone, and Call Forwarding。

voice over ip phone （NXD-803）Key Features：
① Supports SIP 2.0 Protocol；Speakerphone；Call Hold；

② DHCP support for LAN or Cable modem；Caller ID；Call Waiting；

③ PPPoE support for ADSL or Cable modem；Call Forwarding；Call Transfer ；

④ Advanced Digital Signal Processing (DSP) to ensure superb hi-fidelity audio quality；

⑤ Built-in world clock auto time display；

⑥ Single or dual network port (RJ45 10 Base-T)；

⑦ Instant plug and play；Plug and Play；Stylish design；

⑧ Tone generation and Local DTMF generation and detection according with ITU-T；

⑨ PPPoE support for ADSL or Cable modem；voip internet phone Upgrade program by FTP mode；

⑩ Ideal for Home and Office Use；Great price to performance measure；

voice over ip phone （NXD-803）Electric Spec:
① Ethernet Port --- 2 X 10/100MHz Ethernet Port；● AC/DC power adapter, 5V DC；DC input: 5V DC/800A；

② Storage temperature: -30° to 65° C (-22° to 149°F)；● Operation temperature: 0 to 40° C ( 32° to 104°F)