asterisk users - Mar 2010 - CallerID and distinctive ring detection

Using distinctive ring detection with bell202 cid, is there any way to tell
DAHDI to sometimes expect the cid after the 2nd ring, other times after the
1st?  

I just added RingMaster service (2nd DID w/ distinctive ring) to a TDM800P
FXO line.  No problem setting dringcontext for the 2nd DID.  The 1st DID
works normally, but I get no CallerID on the 2nd because the call is picked
up before the FSK spill is sent.

In both cases, the spill is sent about 2.8 secs after the start of the 1st
ring, and 0.7 secs after the (1st or 2nd) ring ends.  But after the default
cadence, DAHDI waits for the spill.  After the dring cadence, the pickup is
almost immediate (about 0.5 sec).

Anybody have any suggestions?  distinctiveringaftercid doesn't help.

-- 
Barry