Connect the device 2N LiftIP - more here: Calling between 2N LiftIP and IP Phone
or 2N Lift8 with VoIP module - more here: Calling between 2N Lift8 and IP Phone via VoIP module 

Parameter 011, enter the number (address) of the station to be dialed after pressing the alarm button on the elevator communicator - see e.g. local IP phone
at 192.168.50.156 in the picture below:
Parameters 012-016 allow you to configure other destinations to be dialed in case of unavailability of the previous one - see e.g. public telephone station and mobile number for parameters 012 and 013 in the picture below:

Parameters 1105, 1113 a 1114 fill in the IP address of the 2N VoiceBlue Next gateway (see IP setting - How to find out the IP address?).

Parameters 1106, 1111 a 1112 enter e.g. 101 and don't use the parameter 1107 (password) - as shown in the picture below.

Be sure to click the "Save to Device" icon below to save changes.

Connect the device 2N VoiceBlue Next - more here: Configuration - How to set 2N VoiceBlue Next?

Adjust the parameter SIP proxy (GSM->IP) in the section VoIP parameters (see the picture below), fill in the IP address of the 2N LiftIP / VoIP module of the 2N Lift8,
and then click on the pencil icon below to save the changes.

By dialing the number of the active SIM card in the 2N VoiceBlue Next gateway, you automatically call the 2N LiftIP / Lift8 device with a VoIP module.