The NTD houses up to 6 line modules or 3 line modules plus 1 rural line module. Separate lockable covers for Telco and customer access allow for basic customer-side testing whilst preventing customer access to earthing terminals and Telco connections. An earth bar is included on the Telco side for earthing the integrated over-voltage protection provided by the line modules. The enclosure is IP54 rated. Dimensions: 260mmH x 250mmW x 72mmD Telstra Serial Item #: 77/124