Hi all! I am a tech who does not have any experience with ESI systems so I respectfully ask for some guidance. bowdown I am trying to assist this customer as the line provider and tech seem to be blaming each other so I am mediating.This customer has an IVX E class with digital lines coming from their cable co. The hackers apparently have been dialing in the system and then calling overseas numbers causing cost and alarms with their provider.The line provider has finally blocked outgoing international calls from this customer but is still requesting more to be done on the pbx side as attempts have not slowed. They are calling more than one line. The trunk to trunk and call forward features are off. If I read correctly in the manual, calling international is already blocked? I don't believe any remote maint ports are connected. Unclear as if there is a log to refer to. Maybe additional toll restrictions? Hoping for guidance in the right direction. Thank you very much for the help.