Cortelco 2747 - Manual (Page 19)

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2.3 Installation Environment
Figure 4. Installation Environment
Step 1 ：
Connect your IP phone to its handset by plugging one end of the coil cord
into the handset and the other end into the jack on the bottom of the IP
phone. To connect to the internet, plug into the middle jack on the back of
the IP phone. This jack is marked WAN. See figure 4 above
Step 2 ：
If you would like to have your PC online at the same time, please connect
the far right port to your PC. This Jack is marked PC. See figure 4
above.
Step 3 ：
Please plug in your power adaptor to your IP phone and power source.
LCD of your IP phone will display “Starting…….” and then “SIP / Hi xxx”
menu within approximately 4 seconds.