What kinds of issues should I report to DCS - and can DCS also contact me?

Yes, it goes both ways. The same scenarios can be flagged by either side: 

• authentication failures, 
• session or billing anomalies, 
• CDR quality issues, 
• location (POI) data problems, 
• connectivity or interface failures, 
• plans for migration to a different CPMS/backend, roaming platform or connection model
• suspected fraud or misbehaviour
• other. 

DCS monitors performance continuously and will reach out if thresholds are breached or anomalies are detected. You should do the same as soon as you spot something on your end.