A1200P+FXS-100 - DTMF detection

Hi,
I use A1200P + FXS-100 with own software, without asterisk.
I can'n detect DTMF from phone.
FXS-100 module uses ProSLIC Si3210 which has DTMF detection support
In opvxa1200.c in line 2043 I found commented
wctdm_setreg(wc, card, 23, 0x01); // DTMF detection interrupt
Does it mean, that in current opvxa1200 driver support of DTMF detection is not made and I should do it in own software?
Is it possible to make support of DTMF in driver code?

Second question: where can I find a decription of variable "ints":

ints = inb(wc->ioaddr + WC_INTSTAT);

Thank you in advance.

Hi
The opvxa1200.c is only get the DTMF signal data save to the structure wc, DTMF detection is done by the asterisk,

specifically how to parse, you can refer to the asterisk.