Which parameters in IX1.INI need to be edited in order to use Point-To-Point or Point-To-Multipoint?

Solution:

The default setting is Euro-ISDN and Point-To-Multipoint:

lineAccess=                   ;1=Point to Multipoint, 2=Point to Point
teiType=                      ;1=Auto Tei, 2=Fixed Tei
teiValue=                     ;if TeiType = Fixed Tei, 0-63 are possible values

For point-to-point you will need to configure the following:

lineAccess=2                  ;1=Point to Multipoint, 2=Point to Point
teiType=2                     ;1=Auto Tei, 2=Fixed Tei
teiValue=0                    ;if TeiType = Fixed Tei, 0-63 are possible values