[asterisk-users] IVR Tree Best Practices

[Matt]

Does anyone have any solid documented evidence for best practices for IVR
Trees?  I'm just curious.  I did some google searching this morning, but
only found one article from TMC.    What I'm looking for are studies
showing, if a customer must go to an IVR, what they prefer, over what they
prefer to not have in the trees.
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