Call forwarding is used to send calls to other locations, making it a very popular business feature. Calls can also be forwarded if the intended telephone line is busy. Because this feature allows calls to follow a customer, it is especially important to traveling professionals, such as realtors or salespeople, whose livelihood is critically dependent on receiving customer calls. However, as everyone in our society becomes increasingly mobile, call forwarding is becoming as common to stay-at-home moms as it is to executives. Some variations of call forwarding include: • No answer—If a call is not answered within three to five rings, it is forwarded to a different number. • Variable—Calls can be automatically forwarded to certain locations based on the time of day.