Cisco SPA 303 Manual page 50

Before you can make or receive calls, you need to activate your phone
line(s). This also activates the billing for your phone line(s). To activate your
phone line(s):
1. Go to https://exchange.intermedia.net and enter your Administrator
Portal login name and password
2. On the 1st screen, click the "Activation" tab.
3. Select either the "Line activation" or "Phone activation" section, place a
check in the box next to the items you wish to activate, and press the Save
changes button.
NOTE- You will activate all of your lines at once, so if there is no
"Activate Lines" button, then you have already activated the lines.
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