If you're using a Snom 300 phone, on the large silver button, press; down, up, tick - you will see an IP address & type it into the web browser of a PC that is connected to the same network as your telephone.
If you're using a Snom 320, 360 or 370 just press the ? key - you will see an IP address - type it into the web browser of a PC that is connected to the same network as your telephone.
Now, click on 'Function Keys' in the yellow column on the left; this shows your options.
You now need to set the 'P' keys to Busy Lamps.
When you first visit the function keys screen you should see something like this:
You now need to set the keys you wish to be configured as busy lamps and the extensions they're to be set to. This screenshot shows all six buttons down the right of the phone (P7 to P12) are configured to monitor extensions 201 to 206.
The first drop down needs to be set to the account on your phone. The second drop down menu needs to be changed from 'line' to extension. The box to the right needs to have the extension you wish to monitor.
Once you have the settings as in the image below, click save.
Once you have saved the settings you will see the extension changes to a new format as in the image below. Don't worry about this, it's fine. No power the phone off for a few seconds, then power back on. You should now find the busy lamps will show the status of the extensions you have set.
When you have configured your phone correctly this is what happens:
* No lit lamp means that the extension is free
* Continuous lit lamp means that the phone is in use
* Flashing lamp means an incoming unanswered call - ie someone is dialling the number but it hasn't been answered yet.
You can find a word document template to print and insert into your phone here http://www.snom.com/fileadmin/redakteur ... mplate.doc