Labels:text | diagram | map | plan | screenshot | schematic OCR: ISDN EQUIPMENT AND REFERENCE INTERFACES These devices or Interfaces NonISDN equipment (TE2) are often combiried into one unit Router with Plain old telephone serial port Service (POTS) terminal S/T adapter Interface Modem R Interface NIL T interface U Interface IBlu compatible Fax ISDN equipment (TE1) NT2 PBX) S/T Interface ISDN telephones S Interface Router with ISON port S/T/U interface PC with Built-in NT1 and terminal adapter Figure 1. In this ISDN site, the U interface is linked to a network termination (NT1) device, which provides an interface that enables ISDN-capable devices to connect to the network, R, S/T, T, S, and 5/1/U interfaces are additional network connectivity links.
