XeNon256

I have Nortel Meridan 1 v.25 with merdian mail and option 11.

I'm new to the system and want to program and ACD # 555 to to roll over to an outside line after 180 seconds of being on hold. To do this I tranfered a second DN # 556 over to an outside #. To do this I programed the TOFT to 180, the IFDN to ext 556 and made AENI to YES. What I seem to get is a overflow based on the OVTH. I get call to overflow on the number of people in the Q and not based off time. If the OVTH is set to three I get 3 calls in the Q and all others get directed over to the overflow. The original calls stay on hold in Q indefenitely. I don't know what I'm missing.

TYPE ACD
CUST 0
ACDN 555
DSAC NO
MAXP 10
SDNB NO
BSCW NO
ISAP NO
AACQ NO
RGAI NO
ACAA YES
FRRT 7
FRT 6
SRRT 8
SRT 10
NRRT
FROA NO
NCFW 565
FNCF NO
FORC NO
RTQT 0
SPCP NO
OBTN NO
RAO NO
CWTH 1
NCWL YES
CWLF 2
CWLW 3
BYTH 0
OVTH 3
TOFT 180
HPQ NO
OCN NO
OVDN
IFDN 556
BUSY BSY BSY SRC BSY
AENI YES
OVBU LNK LNK LNK LNK
EMRT
MURT 9
RTPC NO
RAGT 4
DURT 30
RSND 4
FCTH 20
CRQS 100
IVR NO

Does anyone see anything I am missing? I can post the programing for ext 556 also if you need it, but it seems to be working will the overflow I'm getting.