Lines—Each line corresponds to a directory number or intercom number that others can use to call you. To see how many lines you have, look at the right side of your phone screen. You have as many lines as you have directory numbers and phone line icons.
Calls—Each line can support multiple calls. By default, your phone supports four connected calls per line, but your administrator can adjust this number according to your needs.
Only one call can be active at any time; other calls are automatically placed on hold.
Here is an example: If you have two lines and each line supportsfour calls, then you could have up to eight connected calls at one time. Only one of those calls is active and the other seven are held calls.
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