The Cisco IP Phone 7800 Series
The Cisco IP Phones 7811, 7821, 7841, and 7861 deliver easy-to-use, highly-secure voice communications.
Features |
7811 |
7821 |
7841 |
7861 |
---|---|---|---|---|
Screen |
Greyscale, no backlight |
Greyscale, with backlight |
Greyscale, with backlight |
Greyscale, with backlight |
Lines |
1 |
2 |
4 |
16 |
Fixed feature keys |
8 |
9 |
9 |
9 |
Your phone must be connected to a network and configured to connect to a call control system. The phones support many functions and features, depending on the call control system. Your phone might not have all functions available, based on the way your administrator has set it up.
When you add features to your phone, some features require a line button. But each line button on your phone can support only one function (a line, a speed dial, or a feature). If your phone's line buttons are already in use, your phone won't display any additional features.
To check which phone model you have, press Applications and select . The Model number field shows your phone model.
Feature Support
This document describes all the features that the device supports. However, not all features may be supported with your current configuration. For information on supported features, contact your service provider or administrator.