![](http://pdfasset.owneriq.net/9/7b/97b0614b-3a6b-48ca-b211-bf5250c5329e/97b0614b-3a6b-48ca-b211-bf5250c5329e-bg2c.png)
ISDN BRI 44
SmartNode 4120 User Manual C • Cabling
ISDN BRI
The ISDN port connects to ISDN terminals (phones, PBXs) or an ISDN S-BUS using cables terminated with
RJ-45 connectors. Use straight-though cables to connect to the TE port of your phone, PBX, or
residential S-BUS.
Figure 10. Connecting an ISDN device
Note: Other pins are not used.
ISDN NT
or PBX
RJ-45, male RJ-45, male
3
4
5
6
3
4
5
6