AFSS clearance delivery

In the back of the A/FD there are special phone numbers published to be
used for calling AFSS's to get an IFR clearance. I was completely
unaware of this until last Sunday, when I called for a void time leaving
Cross City, FL. The specialist said he'd be glad to help me, "...but
next time please call the clearance delivery number." According to him,
using this number skips you past the advisories and menus that you get
when you dial 1-800-WXBRIEF.

Somehow the existence of these numbers was missed in my training. I've
been calling the usual number for void times for five years, and this is
the first time a specialist has ever said anything. Did everyone know
this but me? If you use these numbers, what has the quality of service
been like for you?
--
Dan
C172RG at BFM
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