10.40.2. Service Information 
The feature "on hook transfer per user or a group of users"
will only be allowed if in AMO FEASU the parameter ONHKTRNS and
in AMO SDAT paramter NOONHKTRNS are set. If the AMO FEASU parameter
ONHKTRNS is not set then on hook transfer will not be allowed
for any station.
It is also possible to use a range of station numbers with the AMO-SDAT
in order to assign the NOONHKTR parameter for a group of stations.
For customers who want to keep the previous situation where every
station is allowed to do on hook transfer only in AMO FEASU parameter
ONHKTRNS must be set.