High-performance interface ISDN E1 NT-COM 8E1 USB module

ISDN E1 NT-COM 8E1 USB module provides data exchange in ISDN digital telephony networks using PC-compatible platforms with USB 2.0 bus and Windows / Linux / MacOS operating system. Independent exchange over 8 duplex communication channels (PDH ISDN PRI interface, AMI / HDB3 coding, 120 Ohm twisted pair, ITU-TG.703 standard) with software control of receive / transmit modes, LED indication of exchange status and status display through the Web-interface.


  • USB bus powered;no extra power supply required
  • Providing long-haul transmission mode (up to 2 km), with receiver sensitivity up to -43 dB.
  • Fuses protecting input circuits against overloads and short circuits.
  • Passive channel monitoring mode. Connection to the line without active signal coupler.
  • Support for various operating systems without installation drivers.32/64-bit Windows/Linux/macOS
  • Port Status indication via regular browser. Module current status display. No additional software required to access the module status page.

Module Characteristics:

  • 8 E1 RJ-48 120Ωports, 2048000 bps, ITU-T G.703, AMI/HDB3.
  • USB Bus - 2.0.
  • ITU-T G.704 frame synchronization
  • Short-Haul (300 m), Long-Haul (2 km) modes
  • Input cascade protection.
  • Selecting an external port or internal generator for synchronization.
  • Operating temperature range: -40 ... + 85 ° C.
  • Dimensions: 120x150x30 mm.
Catalogue numberProduct NameRetail price (VAT included)
ISDN E1 NT-COM 8E1 USBInterface ISDN E1 8E1 USB module$3900