Cisco 6851 Series User Manual

Cisco IP Phone 6851 Series User Guide
32 | P a g e
Delete All Call Records
You can delete all call history records on your phone.
Procedure
Step 1 Press Applications .
Step 2 Select Recents.
Step 3 Press Recents.
Step 4 Select Option > delete All.
Step 5 Press Delete again to confirm.

Cisco 6851 Series Specifications

General

Full-duplex speakerphone	Yes
Wall-mountable	Yes
Bluetooth	No
Wi-Fi	No
Ethernet Ports	Dual Gigabit Ethernet ports 10/100/1000
PoE	Yes (802.3af)
Programmable Line Keys	4
Network Protocols	SIP, VLAN, DHCP
Security	802.1X authentication, secure boot
Operating Temperature	32°F to 104°F (0°C to 40°C)
Lines	4
Audio Codecs	G.711, G.722, G.729, iLBC