[Asterisk-Users] SetCallerPres problem

[lokotes]

Hi,
Background:
I'm running 2x * boxes.
Box A has a registered user which dials a number. The connection is sent 
to Box B which acts as pstn gateway (sangoma 1xE1 card).

Problem:
On Box A before executing Dial() command I set 
SetCallerPres(prohib_no_screened) but despite that Box B sends the 
connection to pstn with allowed_not_screened flag ? Why is that?

When I set SetCallerPres(prohib_no_screened) on Box B it acts properly.
But why sending this flag between 2 8 boxes doesn't work for me?
Any suggestions?