D-Link DVX-2002F User Manual page 86

number or not.
Check LAN Port IP:By dialing this code you'll hear the system announce the IP address of the

DVX IPPBXLAN interface. It can be dialed on a registered IP phone or an analog phone
connected to the FXS port, whether the analog phone has been assigned with extension
number or not.
Listen to Account Number:By dialing this code you can check the extension number of your

phone, either it's an IP phone or analog phone.
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DVX IPPBX