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Small Business Phone Systems / Troubleshooting / Grandstream ATA Phone LED is solid blue but the device connected to the port is not working

Grandstream ATA Phone LED is solid blue but the device connected to the port is not working

Publish Date: July 21, 2025
Last Updated: July 21, 2025

Confirm that the port is assigned to a user by following the instructions in this article and assigning the port you’d like to use to a user.

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