# Enable or Disable a Call Flow

Each call flow has an on/off switch that decides what happens to calls arriving on its assigned number. Turning the switch on puts the flow into service; turning it off takes it out of service. This page covers both actions.

## Turn a call flow on

With a call flow enabled, any call placed to its **call flow number** or to a **DID number that points to the flow** follows the routing you designed. DID stands for Direct Inward Dialing: it is the external phone number a caller actually dials to reach you.

:::note
A call flow can be reached two ways: through its own **call flow number** (an internal number assigned to the flow) and through any **DID number** that has been routed to it. Enabling the flow activates routing for both at once.
:::

1. Sign in to your Cloud Voice management portal and open **Call Flow Designer**.
2. Locate the flow you want to activate in the list and toggle its switch on.

   ![Call flow list with a flow being switched on from the toggle in its row](/images/pbx/enable-cfd-from-list.png)

3. Confirm the change by clicking **OK** in the dialog that appears.

## Turn a call flow off

With a call flow disabled, calls to its **call flow number** or to any **DID number that points to the flow** are dropped and the caller is disconnected right away.

1. Sign in to your Cloud Voice management portal and open **Call Flow Designer**.
2. Find the flow you want to deactivate in the list and toggle its switch off.

   ![Call flow list with a flow being switched off from the toggle in its row](/images/pbx/disable-cfd.png)

3. Confirm the change by clicking **OK** in the dialog that appears.

:::caution
While a flow is off, no calls reach its routing logic and every caller is disconnected. Re-enable the flow, or move its number to another destination, before you turn it off if you still need to take calls on that number.
:::