Prepaid vs. postpaid
Every user is either prepaid (spends a balance) or postpaid (calls on credit and gets billed afterwards). It's a single checkbox — Postpaid (otherwise prepaid) — on the user's own page, but it changes how several other fields behave.
Where it lives
Open Customers > Users, then a user. The Postpaid (otherwise prepaid) checkbox sits in the Master data section, right next to Blocked. Below it, the Finance section has the fields it affects.
Prepaid — spends a balance
Left unchecked, the user is prepaid. Its calls deduct from Balance as they happen — a prepaid user with no balance cannot make outbound calls. Balance shows again at the top of the user's page as a large number, with a quick Book balance field to add or remove an amount directly (that field takes a plain number — positive to add, negative to subtract).
Postpaid — calls on credit, then gets billed
Checked, the user is postpaid: calls are not blocked by balance. Three fields only make sense — and only take effect — for postpaid: Credit (with an Unlimited option), Daily credit limit (also with Unlimited), and Minimal charge, which the form greys out for a prepaid user with the hint "Only active for postpaid". Postpaid users are the ones an invoice actually bills for money owed — see Invoices & the invoice run.
What each field means
| Field | Meaning |
|---|---|
Postpaid (otherwise prepaid) | Unchecked = prepaid (spends balance). Checked = postpaid (bills afterwards). |
Balance | Prepaid: current spendable balance. Once a user exists, this field is locked on the edit page — use Book balance or a manual payment to change it. |
Balance min / Balance max | Guard rails a balance is expected to stay within. |
Credit | Postpaid only: how far the balance may go negative before calls are blocked. "Unlimited" ignores the number. |
Daily credit limit | Postpaid only: a separate cap on how much a user may run up in one day. |
Minimal charge | Postpaid only (greyed out otherwise): a floor amount applied regardless of actual usage. |
Max. call rate | A per-minute price ceiling for this user's calls, independent of prepaid/postpaid. |
Currency | The currency this user's balance, calls and invoices are priced in. |
Both prepaid and postpaid users get invoices from the invoice run. For a prepaid user, the invoice is mainly a paper record of what a period's calls cost — the money was already taken from the balance call by call. For a postpaid user, the invoice is the actual bill: nothing was deducted before it, so the invoice amount is what's owed.
Check
Open a user and read the checkbox: unchecked with a visible Balance above zero is a working prepaid account; checked with a sensible Credit or Daily credit limit is a working postpaid account.