2
Subject to alternations
Version 2
/ 08.2019 (EN)
2. Used symbols
Type Icon Description
Notice
Important information and notices that you
have to pay attention to.
Hint
Useful hints that provide additional
information.
Action – is marked with a dash
Result of an
action
⇒ is marked with an arrow
List • is marked with a bullet point
B. Initial Operation
1. Requirements and Information
Using this snom IP telephone with your nfon telephone system merely requires a sound
broadband connection.
Please note: Telephones with the firmware 8.9.3.x should not be downgraded to a
firmware lower than 8.7.5.44, otherwise problems may occur if you try to upgrade again.
See the manufacturer's notice here.
2. Adding an extension
All telephones you receive are preconfigured and connected to the telephone system.
Find further information on how to install an extension in the administration portal
manual.