All phone providers must provide free access to the emergency services numbers. Services that do not use an eir line are normally dependent on electricity, so obviously users won’t be able to call 999/112 during a power outage. These operators are supposed to make every effort to provide access to these numbers but we accept that it isn’t always possible. Wireless/VOIP operators must let you know about this before you sign up, or mention the limitations in the terms and conditions.