Cisco 7800 Series Administration Manual page 30

Cisco IP Phone 7841
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Cisco IP Phone 7841
Phone Connections
Connect your Cisco IP phone to your LAN with an Ethernet cable to enable full functionality of your Cisco
IP phone. If your Ethernet port is equipped with Power over Ethernet (PoE), you can power the Cisco IP
phone through the LAN port. Do not extend the LAN Ethernet cable outside the building. For your phone to
work, it must be connected to the IP telephony network.
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
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DC adaptor port (DC48V) (optional).
AC-to-DC power supply (optional).
AC power wall plug (optional).
Network port (10/100 SW) connection. IEEE
802.3af power enabled.
5 Access port (10/100 PC) connection (optional).
6 Auxiliary port (optional).
7 Handset connection.
8 Analog headset connection (optional).