User's Manual

116 OL-19963-01
EFT DRAFT - CISCO CONFIDENTIAL
You can add multiple Expansion Modules to the Cisco Unified IP Phone 9951 and Cisco Unified IP
Phone 971.
When multiple Expansion Modules are attached, they are numbered according to the order in which
they are connected to the phone. For example:
• Key Expansion Module 1 is the Expansion Module closest to the phone.
• Key Expansion Module 2 is the Expansion Module in the middle.
• Key Expansion Module 3 is the Expansion Module farthest to the right.
Features of the Cisco Unified IP Color Key Expansion Module
The Cisco Unified IP Color Key Expansion Module includes the following features.
Cisco Unified IP Phone Model Number of Expansion Modules Supported
9971 3 Expansion Modules with 108 lines or buttons
9951 2 Expansion Modules with 72 lines or buttons
8961 1 Expansion Module with 36 lines or buttons