
10 Eicon Network Termination (NT1) Installation Guide
Appendix C: Switches
The significance of each switch on the rear panel of the ISDN NT1
is given in Table 6.
Table 6. Significance of the Switches
Technical Specifications
Safety
• Use with a certified Class 2 power supply.
Typical Power Requirements
•80 mA at +9 Volts
Environmental Requirements
• Operating temperature: 0°C to 50°C
• Operating humidity: 0 to 90% (non-condensing)
• Barometric operating pressure: 86 to 106 kPascals
Value Switch Positions
12345
No termination off off off off
Termination of 50
Ω
on on on on
Termination of 100
Ω
off on off on
Devices located less than 75 m
from the ISDN NT1
on
Devices located more than 75 m
from the ISDN NT1
off
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