An extended group of people with similar interests or concerns who interact and remain in informal contact for mutual assistance. This can offer support during an emergency power outage. Can also refer to optical networks and information networks linking mainframes, and PCâ€™s, across many buildings and sites. Should your existing networks, have no diesel generator or uninterruptible power supplies to protect them from short or long power breaks then your systems are down. No Network means No control over your business. Frankly you would have no business continuity.