9.2.1. Feature Description 
Figure 95. Number conversion
Indialed digit sequences are converted in the following cases:
- Station numbers between 1 and 6 digits (AMO WABE, DAR=STN). The dialed number must always be converted to an assigned station number.
- Conversion of call numbers from the IDN network (1 to 4 digits) (AMO WABE, DAR=STN) ???Conversion is necessary if the internal numbering of the relevant TTX or DTE devices contains more digits than the station number dialed by the IDN network.
- Combination codes for FAX, DTE (AMO WABE, DAR=FAXNO/DTENO). These must be configured in the digit analysis if the service code plus station number in the system contains more than six digits and the service should be accessible from an external location over the exchange, because only six-digit (max.) station numbers are supported for external access. Conversion is always necessary in this case.
The prerequisite is that the access code to which the conversion is to
occur is already assigned and is compatible with the code to be converted
(service, etc.). There must be no STN configured for the station number
to be converted but it must be applied to the DAR STN in the AMO WABE.
IMPORTANT:
ADD and CHANGE are performed in the same manner
because the AMO RUFUM simply overwrites configured entries in the case
of a new add command. Station number:- conversion