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3CX Phone System for Windows System for Windows
Page 22
Screenshot 3 - Adding an extension
Now enter the following information:
1.
User information.
Extension number
First name
Last name
Email address (Optional) – This will be used for voice mail notifications and as the
default SIP ID. You can leave the field empty if you wish.
2.
Authentication.
Specify an authentication ID and password.
ID – The SIP ‘Username’. e.g. 200.
Password –The SIP Password (password can be hidden from the user).
The Authentication ID and password fields set in the software or hardware phone
must match the above fields! In addition the extension number must be entered in
the phone as well in a field called Account, User ID or something similar to that.
The exact field names differ per vendor. For detailed configuration guides for
popular phones see http://www.3cx.com/sip-phones/index.html