AASTRA 4425 IP Vision (SIP) for MX-ONE User Guide - Manual (Page 82)

83 Dialog 4425 IP Vision
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.
Call 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.