Empirix Number Sweeper Phone Number Validation and Immediate Cost Savings Detection Maintaining toll free numbers that are linked to outdated marketing campaigns, services, products, or departments can be extremely expensive - yet manually discovering which ones are not in service can be near to impossible. The Empirix Number Sweeper Testing Service quickly tests a set of phone numbers to determine which are actively being used and which are out of service. It generates contact center savings immediately. For instance, retiring 1,000 toll-free numbers results in an average of $15,000 in savings per month or $180,000 annually. The Empirix Number Sweeper Testing Service places actual calls to a set of pre-defined phone numbers and determines which lines are operational. For those that are in service, Empirix identifies endpoint functionality and the different greetings and announcements attached to the designated phone number. Empirix reports on passing modes (voice energy or ringtone detected) as well as failure modes (call disconnected, re-order tone detected or non-working number). The Empirix Number Sweeper Testing Service can also be used to validate phone numbers and extensions for unified communications (UC), SIP trunking, carrier switching, and network upgrade projects. In addition, Empirix solutions can be used to ensure that in-service numbers continue to function properly, thereby preempting the frustration users experience when they call a phone number and find it disconnected or routed improperly.