AASTRA 4422 IP Office (SIP) for MX-ONE User Guide - Manual (Page 67)

67 Dialog 4422 IP Office
Other Useful Features
General Deactivation
The following features can be simultaneously cancelled:
•
Callback (all Callbacks are cancelled)
• Internal and External Follow-me
• Manual Message Waiting/Absence Information
Order #001#
Dial.
Press.
Emergency mode
In the event of an emergency the operator can set the telephone
system into Emergency mode, during which only preprogrammed
extensions are permitted to make calls. If your extension is not
assigned with this category and you try to make a call, you will not
receive a dial tone.