Cisco IP Phone 8851 - Cisco
| Controls/Indicators |
| Buttons & Keys Type |
Volume Control |
| Buttons & Keys Type |
Speaker |
| Buttons & Keys Type |
Programmable |
| Buttons & Keys Type |
Navigation |
| Buttons & Keys Type |
Mute |
| Buttons & Keys Type |
Message |
| Buttons & Keys Type |
Line Select |
| Buttons & Keys Type |
Hold Button |
| Buttons & Keys Type |
Directory |
| Buttons & Keys Type |
Headset |
| Buttons & Keys Type |
Conference |
| Buttons & Keys Type |
Call Transfer |
| Display & Graphics |
| Screen Resolution |
800 x 480 |
| Screen Size |
12.7 cm (5") |
| Screen Type |
LCD |
| Backlight |
Yes |
| Interfaces/Ports |
| USB |
Yes |
| Number of Network (RJ-45) Ports |
2 |
| Network (RJ-45) |
Yes |
| Headset Port |
Yes |
| PoE (RJ-45) Port |
Yes |
| Management & Protocols |
| Communication Protocols |
DHCP |
| Communication Protocols |
LLDP |
| Communication Protocols |
LLDP-MED |
| Communication Protocols |
LLDP-PoE |
| Communication Protocols |
RTCP |
| Communication Protocols |
RTP |
| Communication Protocols |
SRTP |
| Communication Protocols |
SIP |
| Communication Protocols |
SDP |
| Quality of Service |
802.1p/q |
| Quality of Service |
802.1Q VLAN Support |
| Miscellaneous |
| Energy Star |
Yes |
| Physical Characteristics |
| Weight (Approximate) |
1.17 kg |
| Form Factor |
Wall Mountable |
| Height |
229.1 mm |
| Width |
257.3 mm |
| Depth |
39.9 mm |
| Product Color |
Charcoal |
| Power Description |
| Input Voltage |
48 V DC |
| Power Source |
AC Adapter |
| Technical Information |
| Speakerphone |
Yes |
| Voice Codec |
iSAC |
| Voice Codec |
iLBC |
| Voice Codec |
G.729a |
| Voice Codec |
G.722 |
| Voice Codec |
G.711u |
| Voice Codec |
G.711a |
| Features |
Indicator |
| Features |
Intercom |
| Features |
Message Waiting LED |
| Features |
Messages |
| Features |
Multilingual Menu |
| Features |
Music on Hold |
| Features |
Mute |
| Features |
Redial |
| Features |
Security |
| Features |
Speed Dial |
| Features |
Voice Mail |
| Features |
Hold |
| Features |
Hearing Aid |
| Features |
Hands-free |
| Features |
Group Pick-up |
| Features |
Distinctive Ringing |
| Features |
Date and Time |
| Features |
Call Transfer |
| Features |
Call Waiting |
| Features |
Conference Call |
| Features |
Call Share |
| Features |
Call Resume |
| Features |
Call Pick-up |
| Features |
Call Park |
| Features |
Call History |
| Features |
(BLF) Busy Lamp Field |
| Features |
Adjustable Display |
| Features |
Auto-answer |
| Features |
Bluetooth |
| Features |
Call Forwarding |
| Wireless Technology |
Bluetooth |
| IP Phone Technology |
VoIP |
| Dialer Type |
Keypad |
| Total Number of Phone Lines |
5 |
| Caller ID |
Yes |
| Handset Connectivity Technology |
Corded/Cordless |
| Base Unit Connectivity Technology |
Corded |