Cisco IP Phone 7800 Series User Manual

Connect a Key Expansion Module to a Cisco IP Phone
If you want to install more than one key expansion module, you repeat steps 7-9 to connect the other key
expansion modules together.
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.
Step 4 Remove the two accessory connector covers, as shown in the diagram.
Cisco IP Phone 7800 and 8800 Series, Cisco IP Conference Phone 7832, and Cisco ATA 190-SC User Guide for Webex Calling (formerly Spark
Call)
12
Add Buttons to Your Phone (8800 Series)
Connect a Key Expansion Module to a Cisco IP Phone

Cisco IP Phone 7800 Series Specifications

General

Protocols	SIP, SCCP
Bluetooth	No
Wi-Fi	No
Connectivity	Ethernet
PoE	IEEE 802.3af/at
Speakerphone	Full-duplex
Headset Support	Yes, via headset port
Ethernet Ports	Dual 10/100/1000 Ethernet ports
Codec Support	G.711, G.722, G.729, iLBC
Security	TLS, SRTP, 802.1X
USB Port	Yes
Mounting	Desk or wall
Audio	Wideband audio (G.722), Handset and speakerphone