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Question :-

The Acme Lumber Company would like to use AAR to reroute calls made from HQ to remote locations when those calls are rejected by the IP WAN because of insufficient bandwidth. The Acme Lumber Company uses 5-digit dialing to all locations. Acme Headquarters has a DID range from 770-555-0001 to 770-557-0500 and the Macon facility has a DID range from 912-556-0500 to 912-556-0550.How should the external phone masks be configured?
770555XXXX
770557XXXX
77055XXXXX
9125560XXX
912556XXXX

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