A new feature has been introduced in Cisco IOSĀ® Software Release 15.1(2)T to guard against the incidence of toll-fraud on Voice GateWays (VGWs) installed with Cisco IOS. Starting with IOS 15.1(2)T and newer releases of IOS based on this version, the toll-fraud prevention settings are the default behavior of Cisco IOS-based VGWs. Behavior Before 15.1(2)TContinue reading “IOS 15.1 Toll Fraud feature”