# Grant Call Quality Monitoring Permission to Extensions

Call quality monitoring gives extension users a faster way to pinpoint what went wrong on a problem call. Once you grant the permission, users can start monitoring directly from the Cloud Voice App. You can hand this permission to a group of extensions at once through a client permission rule.

## Before you begin

Confirm that both your phone system and the Cloud Voice App meet the minimum versions below.

- **Phone system**: firmware `84.23.0.123` or later.
- **Cloud Voice App (iOS)**: version `5.27.18` or later.
- **Cloud Voice App (Android)**: version `5.27.12` or later.

:::note
On the Cloud Voice App for Desktop and Web, monitoring becomes available as soon as the phone system is upgraded. No client update is needed on those platforms.
:::

## Turn on the permission

:::caution
A client permission rule usually applies to many extensions at once, not a single user. Any change you make here affects every extension assigned to that rule, so confirm which extensions the rule covers before you save.
:::

1. Sign in to the phone system management portal and open **Extension and Trunk > Client Permission**.
2. On the **Preference Settings** tab, update the rule you want to apply the permission to.
   a. Find the permission rule you want to change and click the edit icon ![Edit a client permission rule](/images/pbx/edit.png) next to it.
   b. Open the **Configuration Item** drop-down list and, under **Features**, select the **Monitor Call Quality** checkbox.

      ![The Monitor Call Quality option selected under Features in the Configuration Item list](/images/pbx/grant-call-quality-permission.png)
   c. Click **Save**.

## Result

Every extension covered by the rule can now set up and run call quality monitoring from their own Cloud Voice App. The exact steps differ slightly by platform, so users can follow the monitoring instructions for the Cloud Voice App they use on mobile, desktop, or the web.