[asterisk-users] DTMF detection problem on wctdm24xxp

[Paradise Dove]

hi all,
i have problem with dtmf detection on wctdm24xxp with full fxo and vpm module.
after pushing dtmf tones on my phone for several times the card just
detects one or two digits randomly.so now i can't use any voice menu
on my box with this card.

i have tried the following scenarios:

- the card with / without vpm module has the same dtmf detection problem.
- relaxdtmf=yes/no didn't solve the problem
- toneduration=300 / 350 / 400 didn't help also.
- vpmdtmfsupport=1 / 0 didn't solve again.

what else could be the possible cause for this problem?

please help!
- paradise dove