7.1.7.4. Processing Sequence for Entries in DEFPP 
Configuring special rules for callback
If a callback is entered in the requested called party's mailbox
and the mailbox owner activates the callback, the charges are normally
assigned to the mailbox owner as the cost unit. For connections over
tie trunks, the originator of the connection can be defined as the cost
unit:
ADD-DEFPP:CONNTYPE=OUTGO,SUPLSERV=CALLBACK, CHRGEE1=CONNECT;
INFO:
Attention! For normal callback connections over tie trunks without a mailbox, cost
unit
assignment is reversed with the result that the called party becomes the cost unit.
Configuring special rules for conditional and unconditional call forwarding
If the central office forwards a call several times, the charges are
normally assigned to the original called party who initiated the first
call forwarding action. In the case of connections that are forwarded
several times and then finally to the central office, the charges are
assigned to the station that initiated forwarding to central office.
The following settings are necessary either if the charges for connections
from the central office are to be assigned to the actual party reached
or if the charges for connections to the central office are to be assigned
to the initiator of the connection:
ADD-DEFPP:CONNTYPE=OUTGO,SUPLSERV=CALLFOR, CHRGEE1=CALLING; ADD-DEFPP:CONNTYPE=INCO,SUPLSERV=CALLFOR, CHRGEE1=CONNECT;
Configuring special rules for a hunt group
A hunting group is normally reached via the hunting group station
number. The charges are assigned to the hunting group member who answers
the call. The following setting is necessary, if the charges are to be
assigned to the hunting group station number:
ADD-DEFPP:CONNTYPE=INCO,SUPLSERV=HUNTGRP, CHRGEE1=CALLED;
Configuring special rules for override
An override connection is always an internal connection. Administration
of charge assignment is not possible for internal connections.
Configuring special rules for call pickup
Normally, the charges are assigned to the station that picks up a
trunk call. It is, however, possible to define the originally called
party as the cost unit:
ADD-DEFPP:CONNTYPE=INCO,SUPLSERV=PICKUP, CHRGEE1=CALLED;
Configuring special rules for call transfer
Normally, the charges accrued during call transfer are assigned to
the internal station (or the held party, if all stations are internal).
The following settings are necessary if the charges for an extended connection
are to be assigned to the extending party:
ADD-DEFPP:CONNTYPE=OUTGO,SUPLSERV=TRANSFER, CHRGEE1=TRANSPTY; ADD-DEFPP:CONNTYPE=INCO,SUPLSERV=TRANSFER, CHRGEE1=TRANSPTY;