Cisco 8841 Administration Guide

Make sure that the screws are fully inserted into the phone and tightened.
Note
Step 11 (Optional) Install the footstands on the phone and on the key expansion module, and adjust both footstands
to rest evenly on the work surface.
Step 12 Plug the Ethernet cable into the phone.
Connect Two or Three Key Expansion Modules to a Cisco IP
Phone
Procedure
Step 1 Unplug the Ethernet cable from the phone.
Step 2 If installed, remove the footstand from the phone.
Step 3 Locate the accessory connector covers on the side of the phone.
This diagram shows the location.
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
114
Hardware and Accessory Installation
Connect Two or Three Key Expansion Modules to a Cisco IP Phone

Cisco 8841 Specifications

General

Resolution	800 x 480 pixels
Audio	Wideband audio
Bluetooth	No
Ethernet	10/100/1000 Mbps
PoE	IEEE 802.3af compliant
Connectivity	Ethernet
Buttons	4 programmable line keys
Speakerphone	Full-duplex speakerphone
Headset Jack	Yes, RJ9
Codecs	G.711, G.722, G.729a, iLBC
Power Options	PoE
Network Interfaces	Dual Gigabit Ethernet ports
Security	Secure boot, 802.1X authentication, secure credential storage
Dimensions	40 mm
Weight	2.5 lb (1.1 kg)