During the initial years when the concept of toll free numbers was introduced, it remained a luxury facility meant only for large sized corporations having multiple lines. The simple reason was the toll free number facility was costly and smaller businesses could not afford it. Things started to change towards the close of the previous century and 800 numbers became cheaper and within the reach of the small and mid sized businesses. With liberalization of the economy, business people were attempting to offer totally free calling for their customers and the use of 800 numbers is now continually growing. Interestingly, there has been a scramble for 800 numbers - principally because toll free numbers proved to be a great marketing tool to expand customer base, provide better CRM and boost sales. Customers also began to rate high the businesses having toll-free numbers and felt encouraged that they need not pay for the calls they were making. Clients who see that you have a toll free number will be more likely to trust your company. You can also transfer carriers once you have an "800" number which means that they can be transferred between one provider company to the other. Since the demand for "800" numbers shot up steeply, the number got exhausted and this led to the industry service provider using 855, 866, 877
