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3CX Phone System for Windows System for Windows
Page 8
2. In the Connection Settings dialog, click on the ‘Out of Office’ connection and specify
the public IP of 3CX Phone System on the right hand side. If in doubt, contact your
administrator.
3. In the section ‘Authentication’, select ‘3CX Phone System’ and enter your extension
number and pin code.
4. Click on the tab ‘STUN and enable the option “Use STUN – Resolved Public IP
Address’. Leave the default STUN server or enter another one.
5. Now click Save. You can rename the profile by right-clicking on the profile and give it a
different name.
To switch to ‘Outside the office mode’ from within the phone, select ‘Action > Connection
> Out side the office’ from the menu. The connection will be re-established with the new
connection settings.
Configuring a profile to connect to a VOIP provider/SIP server
If you want to create connection that must connect to a VOIP provider, or other SIP
server (for example Asterisk), then create the connection as follows:
1. Select File > Connections from the menu. Click on the ‘Add Connection’ button to
create a new connection profile.
Screenshot 4 –Creating an Out of the Office Connection
2. Now specify the IP of the VOIP provider or SIP server on the right hand side. If in
doubt, contact your administrator.