Channel Ideal time

Hi All,

we use asterisk for our Broadcasting systems, We create .call file and move it to the Outgoing folder and asterisk dials it out. We use TE410p cards and Zap trunks
I need to know how can i make asterisk wait for little more time before it tries to dial next call from the same channel ?
Any one knows where to look for this…

Regards
Nischal…