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Cisco SIP IP Phone 7960 Administrator Guide
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Chapter 1 Product Overview
Cisco SIP IP Phone Connections
Note
Only the network port (labeled 10/100 SW) supports inline power 
from the Cisco Catalyst switches.
For redundancy, you can use the Cisco AC adapter even if you are using inline 
power from the Cisco Catalyst switches. The Cisco SIP IP phone can share the 
power load being used from the inline power and external power source. If either 
the inline power or the external power goes down, the phone can switch entirely 
to the other power source.
To use this redundancy feature you must set the inline power mode to auto on the 
Cisco Catalyst switch. Next, connect the un-powered Cisco SIP IP phone to the 
network. After the phone powers up, connect the external power supply to the 
phone.
Using a Headset
The Cisco SIP IP phone supports a four or six-wire headset jack. Specifically, the 
Cisco SIP IP phone supports the following Plantronics headset models:
•
Tristar Monaural
•
Encore Monaural H91
•
Encore Binaural H101
The Volume and Mute controls will also adjust volume to the earpiece and mute 
the speech path of the headset. The headset activation key is located on the front 
of the Cisco SIP IP phone. 
Note
When using a headset, an amplifier is not required. However, a coil 
cord is required to connect the headset to the headset port on the 
back of your Cisco IP Phone 7960. For information on ordering 
compatible headsets and coil cords for the Cisco IP phone 7960, see 
http://cisco.getheadsets.com.