5.19.3.2.3. Connecting NI BRI Data Devices via the optiPoint Telephone 
OpenScape 4000 supports the connection of NI BRI applications and
data devices via an OptiPoint telephone as follows:
- A 2B + D interface that is provided by an ISDN application in a PC, which in turn is connected to the USB port of an OptiPoint telephone; see FDBs for the feature ID 5073 for information on NI BRI support via the USB interface: API (TAPI / CAPI) for OptiPoint telephone.
- Maximum of two NI BRI data devices with S interface. As an exception to the SLMO card "3-device rule", an additional analog device (for example, a telephone or fax device) on each NI BRI data device that is connected to the TA S0 terminal adapter in an OptiPoint telephone in which no other TAs are installed.
- An NI BRI data device with S interface that is connected to an TA S0 terminal adapter in an OptiPoint telephone in which a TA t/r terminal adapter is also installed.
