ISDN BRI
64
SmartNode 5550 & 4150 Series User Manual
C
• Cabling
ISDN BRI
The ISDN ports are connected to ISDN terminals (Phones, PBXs) or an ISDN NT using cables terminated
with RJ-45 connectors. Use straight-through cables to connect to the S/T port of your NT or phones/PBX.
Figure 20. Connecting an ISDN device
The interconnecting cables shall be acceptable for external use
an shall be rated for the proper application with respect to volt-
age, current, anticipated temperature, flammability, and
mechanical serviceability.
For the ISDN connection to a carrier network, it shall be con-
nected to a network termination device and not connected
directly to an outside POTS line.
CAUTION
CAUTION
