Budget trunking allows for outbound calls to be completed only whilst the budget remaining on the trunk exceeds zero seconds. In the event that the remaining budget on the trunk depletes to zero or beneath, no outbound calls over that trunk will be permitted. Trunkgroups with zero budget will be bypassed in outbound routes, and routes containing only trunks with zero budget will be disabled.
Note: If the remaining budget exceeds zero seconds, an outbound call can be placed. If the budget declines to zero during a call,no further outbound calls will be allowed, but any current calls will be allowed to be completed, which may result in a negative remaining budget.