Typical Use
A lineman's handset typically connects via a pair of test leads, not the modular connector found on most consumer telephone equipment. The test leads will feature some combination of alligator clips (to connect to bare wires), a piercing spike or "bed-of-nails" (for insulated wires), and something designed to fit a punch block. Adapters designed to fit other punch block types, heat coil sockets, or modular jacks may also be used.
A butt set can be connected wherever there is a line appearance -- anywhere the wires are accessible. Inside the central office, this would be at a main or intermediate distribution frame. For outside plant, this would include any serving area interface, such as a cross-connect box or aerial splice enclosure. At subscriber site (e.g., residence), this could be inside or behind the housing of a modular connector, or at the network interface.
When connected to a line, a lineman's handset is essentially indistinguishable from regular subscriber equipment. The technician can monitor an active call, answer incoming calls, and/or make outgoing calls. Common tests include checking for dial tone, using ANAC to identify the line, and using a ringback number.
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