IP and Analog intercom systems in the event of power outage

What happens to IP and Analog intercom systems in the event of power outage?

IP phone systems will not work without power, but traditional analog phone systems can.

Our interphone classic v1100 is an analog system connected to jack RJ11, it will continue to function via the optional backup battery in the event of power outage or blackout.

No other intercom extensions will function, whether they are analog or IP systems.
Even if you choose IP systems, you may want to keep a spare analog phone handy.
Once the power comes back, the system will resume normal function.

Learn more on the differences on Digital IP and Analog intercom systems here.