I have some trouble with No Answer timer frown

2 PBX A(ext 2xxx) and B(ext3xxx) connected via CCIS (E1)

PBX A connected with C.O. via C.O. trk

incoming call must be directed to the ext 3003 PBX B and if NAN 20sec to the ext 3000

CM08>126:0
CM08>608:0

CM1346>3003:0

CM6538>01:0

CM78>010:3000
E605>3003:0
E607>3003:020

Forwarding work only after 35-40sec
I try change timer E607 but fail.
I see this effect on CP R6.2 and R8
Timer CM410>01:xx work fine.