Item | C20 | B20 | |
---|---|---|---|
Audio | Speaker Output | 3.5W,4Ω | 10W,4Ω |
Headset Output | 16mW,150Ω | N/A | |
Microphone | x1 | x1 | |
Protocol | SIP2.0(RFC-3261) | SIP2.0(RFC-3261) | |
Keypad | 6x4 | 6x4 | |
Add LCD | Support SPI Mode (Customizable) | Support SPI Mode (Customizable) | |
Audio Stream | Protocol | RTP | RTP |
Codecs | G.711(a,u),G.722,G.723,G.726,G.729 | G.711(a,u),G.722,G.723,G.726,G.729 | |
Interfaces | Power Input | 5V/1A | 12V/2A |
Poe WAN/LAN |
802.3af(12.95W) 10/100Mbps |
N/A 10/100Mbps |
|
Serial | RS232(Customize) | RS232(Customize) | |
GPIO | 4 x I/O Signal | 4 x I/O Signal | |
Contact Closure Input | N/A | N/A | |
Contact Closure Output Power Output |
N/A N/A |
N/A N/A |
|
Environment | Working Temperature | 0℃~40℃ | 0℃~40℃ |
Storage Temperature Humidity |
-20 ~ 55°C 5 ~ 95% Non-condensing |
-20 ~ 55°C 5 ~ 95% Non-condensing |