Eicon Networks C2x Family manual Termination

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Termination

This section applies to S/T interface users in Australia and North America, and provides instructions to help set up termination scenarios. Termination requirements vary according to: the number of devices connected to the NT1; and the distance between the devices and the NT1.

For users who require termination, the Eiconcard C21 S/T has been shipped with a separate terminating resistor. For information on how to install the terminating resistor, see “Installing a Terminating Resistor” on page 12.

How do I determine the termination value?

Single ISDN Device

If the NT1 is connected to a single ISDN device (e.g. Eiconcard C21), follow the instructions below.

75 meters or more

If the connection spans 75 meters (250 feet) or more, connect the 100 ohm terminating resistor included with the ISDN cable. Set the NT1 to provide 100 ohms of resistance. Consult the manual provided with the external NT1 for more detailed instructions.

Note Some NT1s do not support connections over 75 meters (250 feet). Check your user documentation to determine the distance supported.

75 meters or less

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 external NT1 for more detailed instructions.

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Contents Eiconcard C2x Family First Edition July 203-225-01 Table of Contents Page About this Manual Hardware FeaturesIntroduction Install the Eiconcard C2x Installing the Eiconcard C2xTest the Eiconcard C2x North America and Others Making an Isdn ConnectionEurope and most countries worldwide Eiconcard C21 U-interface Eiconcard C21 S/T-interface Connecting to an NT1How do I determine the termination value? Single Isdn Device TerminationMultiple Isdn Devices Installing a Terminating ResistorMaking a V.24 Connection Interface SpecificationsCcitt # V.24 DCE InterfaceChannel Status LED FunctionalityTechnical Specifications Declaration of Conformity International Regulatory InformationRegulatory Information for the USA FCC Part 68 Notice Regulatory Information for Canada EU Declaration of Conformity Regulatory Information for EuropeUser/Installer Instructions for the United Kingdom Safety Status SelvRegulatory information for Australia Page 203-225-01
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