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## Overview of CoA Script Service

The SAE can use change-of-authorization (CoA) messages to manage services for a specific subscriber session. The CoA script service allows the SAE to exchange CoA messages with third-party devices that do not support Common Open Policy Service (COPS) protocol to activate or deactivate services for specific subscriber sessions. When the SAE activates a CoA script service session, the session sends CoA messages to a RADIUS-enabled device. This method uses RADIUS attributes and RADIUS vendor-specific attributes (VSAs) to identify a subscriber session whose services are to be activated or deactivated.

#### Related Topics

- Configuring CoA Script Services
- Configuring Subscriptions to the CoA Script Service
- Configuring Monitoring Agent to Receive RADIUS Accounting Messages
- Parameters for Sample CoA Script Service
- Example: Using the Sample CoA Script Service

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