TIA-607 defines an intra-building ground-wiring scheme for communications equipment and specifies equipment connection or grounding points. According to TIA-607, the underlying building grounding infrastructure must be set in compliance with NFPA 70: NEC or the equivalent local electrical code or grounding requirements.

In buildings where a ground-cabling infrastructure complying with TIA-607 has been implemented, the Avaya equipment must be grounded according to the TIA-607 standard. In a TIA-607 installation, the Telecommunications Main Grounding Busbar (TMGB) or Telecommunications Grounding Busbar (TGB) links the telecommunications equipment to the ground.

Other grounding terminology is:

• Building principle ground, normally in a building with one floor.

• Floor ground bar, normally in buildings with more than one floor.

Configure telecommunications subsystems, such as groups of frames or equipment, as separate single-point ground entities connected to the dedicated service panel through a single-point ground bar. The service panel ground connects to the building principle ground through the main service panel or, in a TIA-607 installation, through the TGB.