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NTBA Standard

Network termination for ISDN access




The NTBA Standard connects ISDN customer premises equipment to the public ISDN network. That enables subscribers to digitally transmit voice and data over the ISDN access line. The ISDN access line is linked via the ISDN UK0 port. Two ISDN S0 ports are available to connect up to 8 terminal units, e.g. ISDN telephones or ISDN PC cards.

  • Two independent Basic Channels (B Channels) each with 64 Kbit/s
  • One 16 Kbit/s Signaling Channel (D)
  • Bidirectional transmission speed: 144 Kbit/s
  • Two services can operate simultaneously
  • Up to 8 ISDN access sockets via two ISDN S0 ports
  • Industry standard 2B1Q / 4B3T line code for ISDN UK0 port
  • Echo cancellation at ISDN UK0 port ensures bidirectional data transmission
  • Quick configuration thanks to accessible DIP-switches
  • Compact housing (116 x 105 x 38 mm)
  • Low susceptibility to interferences
  • Power supply via ISDN UK0 port or locally


Basic voice communications with two or more simultaneous connections, including data and fax

ISDN video conferencing

Broadcasting industry – reliable audio connection from covering point to broadcasting point

ISDN PBX – making outgoing and receiving incoming calls from any phone in the organization

Back-up Internet connectivity – automatic fail-over to the ISDN network for accessing Internet when the primary Internet line, e.g. Internet leased lines, broadband is down

Bank ATM / point of sale locations – ISDN networks make a good choice for connecting critical yet low bandwidth consuming applications, e.g. multiple Bank ATMs, point of sale locations which needs network access for accepting payment through credit cards

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