The provider would still most likely prefer to first send someone onsite. It could be the normal practice of the LEC to first confirm that the digits being dialed (411) from beyond the local system match the digits being sent at the far end of the PRI. Once confirmed, they would then immediately address all translations & digit analysis associated with the 411 call.
Another sidenote about IDPs-
If it's a 5ESS supported LEC, and an IDP is in fact assigned to this PRI, the IDP's translations for the 411 call have already occurred within the PRI prior to the 411 call even being analyzed by the 5ESS. That's why IMHO it's so important to first confirm the sent digits from the far end of the PRI (especially if an IDP is assigned to that PRI).
IDPs are how we provide optional 5-digit dialing for four separate local prefixes between individual subscribers and lines assigned to various PBXs within a large military installation.
