# (Optional) Enabling Call Forwarding During a Survivability Event

As [previously stated](#_iyu0s6qx0yh), call forwarding for survivability must be disabled during routine business operations to preserve Zoom Phone cloud routing. However, in the occurrence of a survivability event, call forwarding must be enabled from the web portal using a working internet connection. Once enabled, calls made to Zoom Phone-registered numbers will be re-routed across the PSTN to the on-premises SBC. To enable call forwarding, perform the following steps:

1. Sign into the Zoom web portal.
2. Under the **Phone System Management** sub-menu, select **Company Info**.
3. **Select the site name** from the list (or click **Account Settings** if a single-site configuration).
4. Select the site’s **Settings** tab.
5. On the following screen, locate the **Zoom Node** subsection, and the setting for **Call Forwarding Local Survivability**. Click **Manage** to load a new page.

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6. On the following page, select the individual numbers, or check the top-most box to select all numbers displayed on the page, and click **Enable Forwarding**.

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7. A pop-up will appear confirming call forwarding enablement. Click **Enable** to confirm.
8. Call forwarding is now enabled for selected users. Repeat the process as necessary for as many users or pages as are applicable.
9. When the survivability event is over, repeat this process until step 6. Instead, click **Disable Forwarding** and confirm when prompted to remove call forwarding for the selected numbers.