You are probably hearing the "mode codes" that are sent to voice mail port upon answering, to indicate how to handle the incoming call.

That's exactly what's happening. The switch doesn't just ring the extension when it is assigned as a VM extension in 505,7. There is information passed. If you want to confirm this assign them to one of the other regular hunt groups in 505 like 1.

The mode code information is designed for the Partner VM systems and may or may not be appropriate for third party messaging systems.


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