An established business relationship, usually shortened to EBR, is a calling basis resting on a relationship the called party already has with you rather than on a signature they gave you. The Telemarketing Sales Rule sets the windows: a purchase, rental, lease or other financial transaction within the 540 days immediately before the call, or an inquiry or application about your goods or services within the 90 days immediately before it.
It is the basis most feedback and service calling genuinely runs on, and it is the sturdier one in practice, because the transaction sits in your own records with a date on it — a basis you can actually produce if someone asks you for it.
Vocapable maps a campaign’s purpose class to the consent scope that purpose requires, and where the two disagree the attempt is suppressed as a scope mismatch rather than dialed. Consent to service notifications does not authorize a sales campaign, and the suppression names that as its reason instead of disposing the attempt quietly, so the gap shows up on a report rather than in a demand letter.
Whether the relationship qualifies where you dial is yours and your counsel’s to decide. What the platform does is record the basis you declared, read it before every attempt, and refuse the mismatch. How that basis is stored against a contact is on the contact record page.