Actually I tested overlap mode initially later I changed to End block mode for testing.
I guess the problem is with the route patter I have configured (I yet to verify this though). When I dial any number from turret, I dont see # prefix to the number though I press it. I think dealer board is dropping this.
Tomorrow I am planning to have two route patters 9.!# and 9.! as well, so that it should match one of them.