AT&T AT&T manual 176

OUT-OF-BUILDING STATIONS

Description

Single-line voice terminals and multiline 7300H series terminals may be directly connected to the system even though they are not located in the same building. For 7300H series terminals special In-Range Out of Building (IROB) units are used to protect the switch and its users from lightning, power crosses, etc. Out-Of-Building Stations can access all system features.

Considerations

Single-line voice terminals may be located at distances up to 24000 feet from the system cabinets. Carbon protection devices are required for lightning and power cross protection.

Multiline voice terminals must be located within 2000 feet of the system cabinets (local power required beyond l000 feet) and must have IROB protection devices. MET sets may not be used for Out-Of-Building service.

Interactions

None

Administration Requirements

None

Hardware Requirements:

Out-Of-Building multiline voice terminals require IROB units. Single-1ine voice terminals require carbon protection devices and must be connected to ports on the TN742 Analog Line CP. Connectivity information is provided in Section 4, “Hardware Description.”

2-176