Differences Between Phone Calls And Lines; Power Requirements; Energy Savings; Additional Help And Information - Cisco 7800 Series User Manual

Differences Between Phone Calls and Lines

Caution
Differences Between Phone Calls and Lines
We use the terms lines and calls in very specific ways to explain how to use your phone.
• Lines—Each line corresponds to a directory number or intercom number that others can use to call you.
• Calls—Each line can support multiple calls. By default, your phone supports two connected calls per

Power Requirements

The following Cisco-approved power adaptors must be used with the Cisco IP Phone 7800 Series:
• Phihong adapter (PSC18U-480); Rating: 48 VDC 0.38A
• Delta adapter (EADP-18VB B); Rating: 48 VDC 0.375A

Energy Savings

Your administrator can reduce the amount of power that the phone screen uses when you're not using your
phone. Level of energy-saving that your administrator can set up:
• Power Save—The backlight or screen turns off when the phone has been inactive for a period of time.
Note
The Cisco IP Phone 7811 does not support Power Save.
Related Topics

Additional Help and Information

If you have questions about the functions available on your phone, contact your administrator.
Cisco IP Phone 7800 Series Multiplatform Phones User Guide
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Do not use any liquids or powders on the phone because they can contaminate the phone components
and cause failures.
You have as many lines as you have directory numbers and phone line icons.
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 supports four 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.
You can manage the backlight.
Adjust the Phone Screen Backlight, on page 88
Your Phone