Siemens HiPath 1100 Service Manual page 274

Configuring the system specifically for the client
Comments about the system's programming codes
Busy Signaling (004)
This signals the caller that the line is busy, when the system receives an incoming call and the attendant extension is busy.
This feature is valid only for digital lines with an attendant number. It is not valid if
more than one extension is configured for the slot/DID number/MSN. If the Fax/DID
module is installed and configured for digital lines, this feature will also be invalid.
Local area code filter (011)
This allows the system to send the Area Code (LAC) to a destination exchange over a digital line. This enables Caller ID.
Country Area Code Filter (012)
This allows the system to send the Country Code (CAC) to a destination exchange over a digital line. This enables Caller ID.
Call Deflection (229)
When this feature is available and provided by a local carrier, an incoming call to an extension enabled with Call Forwarding
(*11) is routed directly to an external destination over the public network. Alternatively, the HiPath 1100 system can be used.
ISDN Layer 1(101)
This allows you to change certain default ISDN settings for specified countries.
ISDN Layer 2(102)
Allows you to change certain default ISDN settings for specified countries.
B channel (103)
Allows you to change some default ISDN settings for specified countries.
"No DIV.LEG info" for ISDN line (249)
If this option is disabled and a local carrier provides the "Diversion" service for ISDN lines, the extension forwarding the external
calls to an external line can show the original numbers of the participants to the calling parties.
Otherwise, only the number of the MSN/Attendant of the PABX will be made available.
In the default configuration, this option is enabled for the following countries: Australia, Greece and the Netherlands.
This feature only works in ISDN lines in PP or PMP mode and only with T-Reference
Point.
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Service Manual