Cisco 7912G User Manual page 27

Chapter 1 Introducing Your Cisco IP Phone
Caution
Warning
Step 1: Connect the Phone to Your Network
78-15080-02
Before You Begin
Verify that your system administrator is ready for you to connect your
Cisco IP Phone to the network.
If you plan to power your phone locally (instead of receiving power through the
Ethernet connection), use only a Cisco 48V volt power supply designed to work
with a Cisco IP Phone.
To avoid electric shock, do not connect safety extra-low voltage (SELV circuits
to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits,
and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45
connectors. Use caution when connecting cables.
For the Cisco IP Phone 7905G, use the Ethernet cable included with your phone
to connect the network port on the back of your phone to the Ethernet port in your
workspace.
For the Cisco IP Phone 7912G, connect your Cisco IP Phone to the corporate IP
telephony network using one of the following methods, depending on how your
workspace is set up. See your system administrator if you are not sure which
method to choose.
Direct network connection—For this method, you need at least one available
•
Ethernet port in your workspace. Use the Ethernet cable included with your
phone to connect the network port on the back of your phone to the Ethernet
port in your workspace.
Shared network connection—Use this method if you have a single Ethernet
•
port in your workspace with your desktop computer already connected to it.
First, disconnect the Ethernet cable from the computer and attach it to the
network port on the back of your phone. Next, use the Ethernet cable included
with your phone to connect the access port on the back of your phone to your
desktop computer. Your Cisco IP Phone now shares a network connection
with your computer.
Cisco IP Phone 7905G/7912G User Guide for Cisco CallManager
Connecting Your Cisco IP Phone
1-5