Technical data

1.4 Ports 17
Note: For an ISDN line connect the NTBA with the port “S
0
ext”
on the HorstBox. This is mandatory ! Connect the NTBA
to the wall socket according to your service providers
instructions.
1.4.3 VoIP and Ethernet
The HorstBox provides 4 ethernet ports and one port to connect
to the WAN. You may increase the number of ethernet ports by
connecting a hub or switch. The HorstBox administrates up to
30 different VoIP phones.
1.4.4 Example
Note: Analog line: Please connect analog line to port “a/b” on
the HorstBox.
ISDN line: Please connect ISDN line to NTBA
2
and NTBA
to port “S0 Ext” on the HorstBox.
2
Connecting the ISDN line to NTBA is mandatory!