This standard covers new installations1 of network operator-type equipment positions in which personnel are required to access a computer terminal keyboard while continually wearing a headset. Measures are presented that are intended to help to control ESD in the network operator-type environment. To help minimize the effects of lightning@ surges from commercial ac power lines@ and power switching operations@ measures are provided for equipotential bonding and grounding at the telephone Cable Entrance Facility (CEF) and the Power Entrance Facility (PEF)@ as well as for equipotential bonding@ grounding and@ where necessary@ electrical protection at the network operator-type equipment position(s). Purpose The purpose of this standard is to provide ESD-mitigative measures that are intended to control ESD in the operator-user environment@ and to provide electrical protection measures that are intended to minimize potential differences at the network operator-type equipment position. It is not to guarantee against the occurrence of ESD or other electrical disturbances or their effects. 1 Although the measures outlines in this standard are specifically intended for new installations@ some of the techniques presented may also be useful at existing installations.