> ## Documentation Index
> Fetch the complete documentation index at: https://docs.teamfollowup.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use the public API base URL: https://api.teamfollowup.ai/api.
> Authenticate public API requests with Authorization: Bearer YOUR_API_KEY.
> Use product-owned terms: agents, calls, campaigns, contacts, phone numbers, billing, and configuration.

# When and how often you call

> Set the hours a campaign can dial, whose clock they run on, and how often it retries.

Reaching people is about timing. Call at the wrong hour and you annoy them. Call
once and give up, and you miss most of them. A campaign gives you three dials for
this: your calling **hours**, the **timezone** rule, and the **rhythm** of retries.

## Calling hours (the window)

The calling window is the hours you're allowed to dial: the days of the week and a
start and end time, like Monday to Friday, 9am to 5pm. You can split a day into
multiple blocks, run windows that cross midnight, and choose whether to measure
those hours in your business timezone or in each contact's own local time.

There's also **AI After Hours**, where the AI only calls in the gaps around your
human team, and a choice about whether leads that arrive outside your hours wait
for the next opening or get left for your reps.

<Card title="The calling window, in full" icon="clock" href="/campaigns/calling-window">
  Standard vs AI After Hours, what happens to a lead that arrives after hours, and
  whose clock the window runs on.
</Card>

## How you dial (the mode)

There's more than one way to work a list. The mode decides the style:

| Mode                             | What it does                                                       |
| -------------------------------- | ------------------------------------------------------------------ |
| **Speed to lead**                | Call the instant a fresh lead comes in, while they're still warm.  |
| **Power dialer**                 | Work steadily through a list on a set schedule.                    |
| **Power dialer + speed to lead** | Jump on new leads instantly, and keep working the list in between. |

Speed to lead is about being fast. Power dialer is about being thorough. Most
people run both together.

## How often (the cadence)

If someone doesn't pick up, you don't stop after one ring. The **cadence** is your
retry rhythm: how many times a day you try, on which days, and how far apart.

Want to try someone twice a day? That's just two attempts scheduled on the same
day. The cadence handles the spacing so you stay persistent without being a pest.

<Tip>
  Persistence wins, but there's a line. A few well spaced tries over a few days
  beats hammering someone six times in one afternoon. Space your attempts out.
</Tip>