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ISDN Products - NT1 Network Terminator

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Product Overview

This isdn nt1 device forms the interface between the telephone and the subscribers, and as such, fulfills the following functions. Data transmission, i.e. Conversion from 2-wire to 4-wire transmission. Power feeding of subscribers. Switching between normal mode and restricted mode. This device module has the following interfaces: U interface (a/b wire, exchange side) S interface (subscriber side) P interface, device connection for the external power supply 240VAC (Power Pack) 40VDC (Rack Version) 1.2 General functional description The electronics of this device has the following functions: Change-over of the power supply between Normal and Restricted mode. nt1 device conversion of the signals (Codes, Level) between U interface and S interface Galvanic isolation & Safeguarding the full duplex connection to the exchange by maintaining adequate signal quality. Also has a capability to support exchanges with no or insufficient remote power feeding. Keep slide switch SW at position Ul, if power available & fed to UNT is well within range (40-115V) OR else keep at position U2, if power available & fed to UNT is Low or Zero. Easy Access nt1 terminates the line at the customer premises and provides 2 S/T interfaces for digital access. It is ideally suited for high-quality voice connectivity with isdn phones as well as instant high-speed internet access through modem.


Network Terminator (nt1)


A network interface equipment or CPE (Customer Premise Equipment) that converts a basic 2 wire line from the telephone exchange to a 4 wire digital line which is required for the digital interface to devices like Digital Phone (isdn Phone), G4 Fax (Digital Fax). The term "nt1" refers to the location in an isdn network where this device is located and it may be thought of as the first point of customer/telephone provider connection. It is ideally suited for high-quality voice connectivity with phones as well as instant high-speed internet access through modem. Basic Rate isdn network can economically provide up to two 64Kbps (i.e total 128 KBPS) channels of bandwidth on one telephone line.


Specifications


Easy Access nt1 terminates the line at the customer premises and provides 2 S/T interfaces for digital access. It is ideally suited for high-quality voice connectivity with phones as well as instant high-speed internet access through modems.

Operating range up to 8.8 km with wire.

RJ-45 connector.

Optional Terminal strip.

diameter of 0.6 mm.

Plug and play.

for U and S interfaces.

Two S interfaces.

Remote powering.

 

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