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Cisco 8851 Guide

Cisco 8851
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Step 5 Click Submit All Changes.
Upgrade Firmware by TFTP, HTTP, or HTTPS
The phone supports firmware upgrade by TFTP, HTTP, or HTTPS.
Downgrades to earlier releases may not be available for all devices. For more information, see the release
notes for your phone and firmware version.
Note
Before you begin
The firmware load file must be downloaded to an accessible server.
Procedure
Step 1 Rename the image as follows:
cp-x8xx-sip.aa-b-cMPP.cop to cp-x8xx-sip.aa-b-cMPP.tar.gz
where:
x8xx is the phone series, such as 8811.
aa-b-c is the release number, such as 10-4-1
Step 2 Use the tar –xzvf command to untar the tar ball.
Step 3 Copy the folder to a TFTP, HTTP, or HTTPS download directory.
Step 4 Access the phone administration web page. See Access the Phone Web Interface, on page 104.
Step 5 Select Voice > Provisioning.
Step 6 Find the load filename which ends in .loads and append it to the valid URL.
Step 7 Click Submit All Changes.
Upgrade Firmware With a Browser Command
An upgrade command entered into the browser address bar can be used to upgrade firmware on a phone. The
phone updates only when it is idle. The update is attempted automatically after the call is complete.
Procedure
To upgrade the phone with a URL in a web browser, enter this command:
http://<phone_ip>/admin/upgrade?<schema>://<serv_ip[:port]>/filepath
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
99
Cisco IP Phone Provisioning
Upgrade Firmware by TFTP, HTTP, or HTTPS

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Cisco 8851 Specifications

General IconGeneral
Resolution800 x 480 pixels
Network InterfacesDual Gigabit Ethernet ports
Headset PortYes
AudioWideband audio
Ethernet10/100/1000 Mbps
USBYes, USB 2.0
PowerIEEE 802.3af/at Power over Ethernet (PoE)
ProtocolsSIP
PoEYes
Codec SupportG.711, G.722, G.729, iLBC
Headset ConnectorRJ9
LinesUp to 5 lines
Dimensions229 x 256 x 41 mm (excluding foot stand)
Weight1.2 kg

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