The type of monitoring solution you need depends on the level of security appropriate for your business. An entry level monitoring service would be Digital monitoring which is suitable for many but would fail should the phoneline fault or be cut. DualCom offers a dual signalling system so that it will still notify the response centre should the line be tampered with. BT RedCare is the most secure monitoring system as it continuously monitors the alarm and would be able to detect any issues with the line, even if the alarm itself was not triggered.
When alerted to the alarm being triggered the alarm response centre would perform checks to confirm the alarm, notify the key holder and, if appropriate, alert the police.