Power Requirements - Cisco 7800 Series Manual

Clean the Phone Screen
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Recents
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Clean the Phone Screen
Procedure
If your phone screen gets dirty, wipe it with a soft, dry cloth.
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 four 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
Your Phone
16
Description
Shared line active by another user.
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. Depending upon how your
phone is configured, you could have up to 16 lines.
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.
Description
Incoming call
Outgoing call
Missed call
Your Phone