How do I know if my intercom is working and calling?

If your intercom has been programmed correctly, key in your house/flat number and press call. You should hear ringing and your phone should ring. Occasionally there may be a pause before it starts ringing, the connection speed depends on signal strength and whether the intercom is running on 2G or 4G networks or that the landline connection that the intercom uses isn’t busy being used elsewhere. 

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