You must enable your Listenport 1012 on the box. To enable or disable this, enter the following code into your telephone:
#96*5* Callmonitor-Support enabled.
#96*4* Callmonitor-Support disabled.
Some notes
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If you want to exclude numbers from monitoring enter these numbers (only numbers, no spaces or special chars within are allowed) separated by comma and/or space in the provided field. Leave this field blank if you don't want exclude any numbers. Example: 08154711, 08154712
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A full qualified authentication against the box (user, password) is strongly recommended.