Power Requirements; Phone Firmware And Upgrades; Postpone A Phone Upgrade; View The Progress Of A Phone Firmware Upgrade - Cisco 7800 Series User Manual

CISCO 7800 SERIES
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.

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

Phone Firmware and Upgrades

Your phone comes with firmware already installed, which is specific to the call control system that your phone
uses.
Occasionally, your administrator upgrades the phone firmware for you. This upgrade happens when you are
not using your phone because the phone resets to use the new firmware.

Postpone a Phone Upgrade

When new firmware is available, the Ready to upgrade window is displayed on your phone and a timer
begins a 15-second countdown. If you do nothing, the upgrade proceeds.
You can postpone your firmware upgrade for 1 hour and up to 11 times. The upgrade is also postponed if you
make or receive a phone call.
Procedure
Select Delay to postpone a phone upgrade.

View the Progress of a Phone Firmware Upgrade

During a phone firmware upgrade, you can view the upgrade progress.
Procedure
Step 1
Press Applications
Step 2 Select Phone information > Show detail.
Step 3
Press Exit.
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