Sunil,
30 seconds is WAY too much wait and I think that someting is wrong with your dialer.
I think Dadi is on the right path that the detection system is erroneous on your system.
Try this: turn of answering machine detection. Have your agent disposition these by hand for a couple of hours. Compare the numbers you are now getting with what you had before. The answering machine detection might be too sensitive and picking up live calls as answering machines.
Also, I have seen this problem come up when the dialer was not actually using all lines to dial. So, you have 3 lines per agent but the system is not using them all. Have your IT department check this area.
There is definitely something wrong here, hopefully you can optimize your numbers.
Let me know if you have been able to change your wait times.
Alex
atrottier@kjmg.com