AASTRA 4225 for MX-ONE Telephony Switch - Manual (Page 7)

7 Dialog 4223 Professional/Dialog 4225 Vision
Description
Description
Dialog 4223 Professional
1 Display
See section “
Display information ” on page 16.
2 Display menu keys
The key functions depend on the traffic state. When you are requested
“(see display)”, press the required key to access the feature.
3 Callback
Indicating/activating Callback. See section “
When you receive a busy
tone ” on page 40. The feature can be removed or moved to another
programmable function key by your system administrator.
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5 b
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16 16
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