ONE100 - Installation Manual
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4.9
S0/T0 interface
The ONE100 supports up to 4 ISDN interface S0/T0. The interfaces can be
configured in TE or NT.
The connection of the digital voice interface is carried out on the rear panel via RJ45
connectors (1 connector by interface).
The factory configuration of these interfaces is T0 mode. Do not connect the
interfaces with a public ISDN access without ensuring that jumper positions
are correct. The product can be damaged definitively otherwise.
You can connect/disconnect the power-supply of all ISDN ports by using the
command ‘CLI(voice-port)# [no] power-source-one’ without changing the
default jumper factory settings.
To respect the environmental norm, cables connected to the interfaces
T0/S0 (ISDN/BRI) must be shielded.
4.9.1 Mother
board
configuration
Every ISDN interface has four jumpers making it possible to configure the following
options:
•
100 Ohms impedance adaptation,
•
Power-feeding for ISDN phones
The drawing below presents the position of the 4 blocks of 4 jumpers on the mother
board:
Figure 9.
Positioning of the 4 blocks of jumpers
