I have a Unity Express 8.5 integrated with CUCM 8.5. All CTI ports and CTI route points are registered, but everytime I call the auto attendant it returns a fast busy tone. I have another router with same model/IOS and another unity express module with same version and it works fine. Has anyone experience a hardware issue with Unity Express that exhibits these symptoms. I can see in the Unity Express trace that calls are hitting the module but I can see JTAPI errors.
Could be a codec mismatch, make sure you're using G711 to the CUE module, check the dial-peers to make sure it's coded as G711.
HTH,
Chris
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