6.3.2.7. ICZO and ICZL 
You can use the parameter ICZO to activate incoming call detail recording
per trunk.
You can use the parameter ICZL to activate incoming call detail recording
by zone and line.
The parameters ICZL and ICZO are mutually exclusive.
When transferring the connection of a call from the ATND to the station
and from the secretary to the executive station, a separate CDR record
is created for each call section.
IMPORTANT:
The AMO GEFE indicates whether the ATND or
the secretary must pay for their call section themselves. The GEFE parameter
ATTNDINC defines whether the ATND or the secretary is chargeable for
incoming connections. The GEFE parameter ATTNDOUT defines whether the
ATND or the secretary is chargeable for outgoing connections.
More information you can find in section "INCDR - Feature Usage
Examples and COT Parameters, Chapter
271, "ICZO - Incoming call data recording by zone only"
and Chapter
270, "ICZL - Incoming call data recording by zone or from line".