8820IP Phone User Manual_ SIP (V1.44)
7
●
VAD/CNG save bandwidth
●
DHCP
：
Dynamic Host Configuration Protocol
●
PPPoE
：
PPP Protocol over Ethernet
●
DNS
：
Domain Name Server
●
Telnet
：
Internet's remote login protocol
●
FTP
：
File Transfer protocol
●
TFTP
：
File Transfer protocol (optional)
●
HTTP
：
Hyper Text Transfer protocol
Ø
Operating requirements:
●
Operation temperature: 0 to 50° C (32° to 122° F)
●
Storage temperature: -30° to 65° C (-22° to 149° F)
●
Humidity: 10 to 90% no dew
Ø
Electric requirements:
●
Voltage: 9V DC
●
Power: 9W (max.)
●
Power adapter: AC/DC input 100-230V
，
Output 9V 1A
●
Network interface:2X RJ-45 Ethernet Connectors
Ø
Size
：
200 x 180 x 85 mm (L x W x H)
