2. Modem setup directions
2.1 Connecting modem to a line
Make sure the line has no foreign devices varying its
specifications such as fuses, inductors, load coils and
other similar line conditioning devices. These devices
may cause serious modem performance limitations or
even completely prevent operation of an xDSL modem!
Make sure that the communication line in use has
neither external voltage supply nor attached foreign
telco devices! Ignoring this rule may cause permanent
damage to both the modems and those foreign telco
equipment!
2.1.1 Requirements to a communication line
The line must comply with the following requirements for proper operation
and performance:
•
It must have neither leakage to ground nor to other wires (both
connected and loosed). It should not have taps (branches).
•
Both wires must belong to the same twisted pair if a multi-pair cable is
used.
•
Parallel connection of a few pairs (e. g., to reduce the line resistance)
is not permitted.
Ignoring the aforementioned requirements may cause significant modem
performance limitations or even completely prevent operation of an xDSL
modem.
After you verify that the line comply with the aforementioned requirements -
•
Fix the supplied RJ-45 plug on the cable in accordance with figure 5.
The Sigrand SG-16BG modem uses only one pair of pins, namely 4
and 5. Other pins are not assigned.
•
Attach the cable to the DSL connector of the modem.
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