Eicon Networks ISDN NT1 Guía de instalación descargar pdf (Pagina 15)

Eiconcard™ Family Installation Guide

page 15

Termination

This section provides instructions to help set up termination

scenarios for installations in Australia and North America.

Termination requirements vary according to the number of ISDN

devices connected to the NT1 and the distance between the ISDN

devices and the NT1.

Terminating resistor

If you purchased the Eiconcard in North America, a 100 ohm

terminating resistor is included. The terminating resistor is

installed by inserting the RJ-45 end of the ISDN cable into the

terminating resistor, and then inserting the terminating resistor

into an ISDN jack.

Terminating a single ISDN device

If the NT1 is connected to a single Eiconcard, then:

• If the connection spans 75 meters (250 feet) or more,

set the NT1 to provide 100 ohms of resistance and connect the

terminating resistor. Consult the manual provided with the NT1

for more detailed instructions.

Note: Some NT1s do not support connections over 75 meters.

• If the connection spans less than 75 meters (250 feet),

set the NT1 to 50 ohms of resistance and do not connect the

terminating resistor. Consult the manual provided with the NT1

for more detailed instructions.

Terminating multiple ISDN devices

If the NT1 is connected to more than one Eiconcard or other ISDN

device, then follow the instructions below.

• If the connection spans 75 meters (250 feet) or more,

then the ISDN device at each end of the connection must be

set to 100 ohm termination. If the Eiconcard is at one end of

the connection, connect the 100 ohm terminating resistor to

the end of the ISDN cable. Consult the manuals provided with

the other ISDN devices and NT1 for detailed instructions.

Note: Some NT1s do not support connections over 75 meters.

• If the connection spans less than 75 meters (250 feet),

set the NT1 to 50 ohms of resistance, and do not connect the

terminating resistor. Set the other ISDN devices to no

termination. Consult the manuals provided with the NT1 and

other ISDN devices for more detailed instructions.

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Eicon Networks ISDN NT1 Guía de instalación Pagina 15