### Answer
The
Total Call Cost metric in the Alerting section monitors the total cost of calls in USD within your specified evaluation window. [(1) ](
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This metric allows you to set budget alerts when call costs exceed thresholds you define.
For example, you could create an alert rule that triggers when your total call cost exceeds a certain dollar amount (using an absolute threshold) or when costs increase by a certain percentage compared to the previous period (using a relative threshold) .
You can configure the evaluation window (ranging from 1 minute to 7 days) and frequency to determine how the cost is aggregated and how often the rule is checked.