DLR request flag?

[Otgonbayar Agvaan]

I connected kannel to Comverse SMSC and it works fine. But I don't receive
DLR. So, I traced it on SMSC and I found that Registered delivery flag is
set 0 in SMPP protocol. How can I set it in kannel config?

Otgo,
Ub,
Mgl.