Chapter 2: System hardware
Network indoor unit (NIDU)
Page 2-47
Network indoor unit (NIDU)
NIDU description
The NIDU (
) is an optional component that adds up to eight TDM channels (E1 or T1)
to a PTP 670 link. It multiplexes and demultiplexes E1, T1 and Ethernet data over the wireless
bridge.
The NIDU is an indoor unit that is connected to the PSU (via the ODU port), to network
terminating equipment (via the LAN port) and to up to eight E1 or T1 channels (via the E1/T1
ports) using Cat5e cable with RJ45 connectors. It requires a 48V to 60V DC power supply, either
from the AC+DC Enhanced Power Injector 56V, the PTP 800 AC-DC Power Supply Converter or
another source.
Figure 34 NIDU
Note
To enable E1 or T1 capability over a PTP 670 link, purchase one access key for each
link end from Cambium Networks (
).