Attachment B: Tracking a Toll-Free 511 Call

Tracking a 511 call using a Toll-Free number or backbone


Caller dials 511 from a landline telephone.

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.


In certain cases, such as when using a toll-free backbone, per-minute charges continue for the duration of the call transfer; in other cases, the transfer results in a one-time charge, per call, to the provider.


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