I’m a voip reseller and one of my customers has been sending a strange pattern of calls. They pick a country and, for a few days, send calls to random numbers. There might be one call every few minutes. ASR is low but if they connect, they often last exactly 7 seconds. A few days later, they change country. The customer is vague about what the traffic is. It seems harmless but I’m nervous about what it’s for.