welcome to the Polycom Community.
The Codec was sold back in 30/12/2004 so it is nearly 13 years old.
This mode usually happens when the unit lost its software. You can try and re-flash this but after such a long running time and not knowing what caused it I can only suggest to start looking for a more current unit.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
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