[OrBy]

There are a few steps that you can take to speed up caller answering.
1. Disable the HTC dialer and use the stock WM one.
2. Lower the "slot cycle index" from 2 to 1 or 0 in ##PST.
3. Use a short (less then 30 seconds) uncompressed (.wav) ring tone located on the actual phone memory (not in the internal storage folder).

** Extra note - be aware that suggestion 2 will reduce your standby battery life.

Hope this helps.