Attachment C: Tracking a Toll-Free and Local 511 Call

Tracking a 511 call using a Local and Toll-Free backbone


Caller "A" dials 511 from a landline telephone that is a local call to the ATIS center.

Caller "B" dials 511 from a landline telephone outside of the local dialing area to the ATIS center.

For caller A: Telephone company switching office translates 511 call to a local 7 or 10-digit number. Call is sent on to ATIS service center.

For caller B: Telephone company switching office translates 511 call to a toll-free number. Call is sent on to ATIS service center.

Call is answered at ATIS service center through automated voice response system.

Call may be forwarded to other partner agencies.


Note: Telephone companies are able to discriminate by area code and exchange to allow local calls to travel on local lines, and toll or long distance calls to travel on the toll-free backbone.


Return to 511 Business Models and Costs Considerations report