diff --git a/engine/calldesc.go b/engine/calldesc.go
index 5888c7854..113563757 100644
--- a/engine/calldesc.go
+++ b/engine/calldesc.go
@@ -532,16 +532,18 @@ func (origCD *CallDescriptor) getMaxSessionDuration(origAcc *Account) (time.Dura
 	var totalCost float64
 	var totalDuration time.Duration
 	defaultBalance := account.GetDefaultMoneyBalance(cd.Direction)
-	Logger.Debug("ORIG: " + utils.ToJSON(defaultBalance))
+	Logger.Debug("DEFAULT_BALANCE: " + utils.ToJSON(defaultBalance))
 	cc.Timespans.Decompress()
 	//log.Printf("ACC: %+v", account)
 	for _, ts := range cc.Timespans {
 		//if ts.RateInterval != nil {
 		//log.Printf("TS: %+v", ts)
+		Logger.Debug("TS: " + utils.ToJSON(ts))
 		//}
 		if cd.MaxRate > 0 && cd.MaxRateUnit > 0 {
 			rate, _, rateUnit := ts.RateInterval.GetRateParameters(ts.GetGroupStart())
 			if rate/rateUnit.Seconds() > cd.MaxRate/cd.MaxRateUnit.Seconds() {
+				Logger.Debug(fmt.Sprintf("0_INIT DUR %v, TOTAL DUR: %v", initialDuration, totalDuration))
 				return utils.MinDuration(initialDuration, totalDuration), nil
 			}
 		}
@@ -549,21 +551,24 @@ func (origCD *CallDescriptor) getMaxSessionDuration(origAcc *Account) (time.Dura
 			ts.createIncrementsSlice()
 		}
 		for _, incr := range ts.Increments {
+			Logger.Debug("INCR: " + utils.ToJSON(incr))
 			totalCost += incr.Cost
 			if defaultBalance.Value < 0 && incr.BalanceInfo.MoneyBalanceUuid == defaultBalance.Uuid {
 				// this increment was payed with debt
 				// TODO: improve this check
+				Logger.Debug(fmt.Sprintf("1_INIT DUR %v, TOTAL DUR: %v", initialDuration, totalDuration))
 				return utils.MinDuration(initialDuration, totalDuration), nil
 
 			}
 			totalDuration += incr.Duration
 			if totalDuration >= initialDuration {
 				// we have enough, return
+				Logger.Debug(fmt.Sprintf("2_INIT DUR %v, TOTAL DUR: %v", initialDuration, totalDuration))
 				return initialDuration, nil
 			}
 		}
 	}
-	Logger.Debug(fmt.Sprintf("INIT DUR %v, TOTAL DUR: %v", initialDuration, totalDuration))
+	Logger.Debug(fmt.Sprintf("3_INIT DUR %v, TOTAL DUR: %v", initialDuration, totalDuration))
 	return utils.MinDuration(initialDuration, totalDuration), nil
 }