Summary:
Add the Yealink T42U IP phone to the list of RingCentral's certified supported devices for assisted provisioning. This will enable automatic configuration and HD Voice (G.722 codec) functionality.

Detailed Description:
- The Yealink T42U is a popular and widely used IP phone model equipped with the G.722 codec, which supports high-definition (HD) voice calls.  
- Currently, the Yealink T42U is not listed among RingCentral's certified supported phones. This necessitates manual provisioning, which is time-consuming and prone to errors.
- More importantly, manual provisioning prevents the automatic activation of HD Voice, even though the phone hardware supports it.
- Users of the Yealink T42U are unable to leverage the superior audio quality offered by HD Voice when using the RingCentral platform.
- This feature request aims to address this issue by:
* Adding the Yealink T42U to RingCentral's assisted provisioning system.
* Enabling automatic HD Voice configuration (G.722 codec) for this phone model.

Business Impact:
- Improved user experience: Enabling HD Voice will significantly enhance call quality for Yealink T42U users.
- Increased efficiency: Assisted provisioning will streamline the setup process for these phones, reducing IT workload.
- Enhanced customer satisfaction: Providing full support for a popular phone model will improve overall customer satisfaction with RingCentral's services.
- Increased compatibility: Adding this phone to the supported device list, will show RingCentral's dedication to supporting modern devices.

Proposed Solution:
- RingCentral should conduct the necessary testing and certification processes to add the Yealink T42U to its list of supported devices.
- The assisted provisioning system should be updated to automatically configure HD Voice (G.722 codec) for the Yealink T42U.

Make and Model: Yealink T42U

Codec: G.722

Current Issue: Manual provisioning only. HD Voice is not enabled.