X, while the Service Bureaus price according to the number of call records, perhaps charging a frac- tion of a cent per record. A general rule of thumb is that each business telephone averages five calls per day. An average organization with 80 120 * The Telecom Handbook CHAPTER 6 people generates approximately 8,000 outgoing calls per month. (5 calls per day X 80 people X 20 working days = 8,000 calls). The number of calls made can vary considerably for certain types of organizations. For example, the average Telemarketer makes 60 outgoing calls per day. Each call record takes up the same amount of space on the storage device or hard drive. Accuracy of Call Costing Many Call Accounting systems do not accurately price the calls due to insufficient effort spent in setting up the system and keeping it accurate. While this is not extremely labor in- tensive, the knowledge and experience needed to do this is increasingly rare. The pricing of different types of telephone calls from each telecommunications service provider can vary as can different rate plans and contract prices. For example, an interstate call may have an initial period of 18 seconds and subsequent billing incre- ments of 6 seconds, where an international call may have an initial period of one minute with a different billing increment. It is also important that the Call Accounting system be set up to recognize on which group of outside lines (also called a PBX Trunk Group) each call is being sent. Calls placed on a type of circuit called a T-1 directly connected to your long distance tele- communications service provider have a lower cost per minute than calls placed over your regular PBX outside lines (also called combination trunks). There are many different rates for calls de- pending upon the destination and the trunk group. If these are not all identified, the Call Accounting system will not accurately mirror the telecommunications bill. As new area codes and exchanges are added, the database of V&H coordinates in the Call Accounting system need 