Issue with "Not available" message recording.

I enabled the voicemail in a new extension and I recorded the message through the ip phone (Linksys SPA922) like usual (*97, 0, 4 etc.etc.).

Finished the recording, I check the message and confirm the save request. All seem ok !

But, calling the extension, I don't hear my message but only 1 or 2 seconds of silence followed by the "beep" tone that advise the starting of the voicemail recording.

The message is recorded regularly. This mean that the voice mail service work fine.

But why I'm not able to record my custom message ?!!?!?

Thanks for support