Point of appearance

line appearancetermination
Point of appearance is a generic term for any point in a telephone/data circuit from which a technician can test or pull stats.wikipedia
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Heat coil

Others are physical, like a punch down COSMIC frame where a technician can place a test set, or a heat coil socket.
They are commonly the last point of appearance for a telephone circuit before it leaves the office, for example on the outside plant side of the main distribution frame.

Lineman's handset

test set
Others are physical, like a punch down COSMIC frame where a technician can place a test set, or a heat coil socket.
A butt set can be connected wherever there is a line appearance—anywhere the wires are accessible.

Telecommunication circuit

circuitcircuitsconnection
Point of appearance is a generic term for any point in a telephone/data circuit from which a technician can test or pull stats.

Digital cross connect system

cross-connectdigital access and cross-connect systemdigital cross connects
Some appearances are virtual, such as a Digital cross connect system computer terminal.

Punch-down block

punch blockpunch down blockpunch down
Others are physical, like a punch down COSMIC frame where a technician can place a test set, or a heat coil socket.

COSMOS (telecommunications)

COSMOSCOSMICWire records
Others are physical, like a punch down COSMIC frame where a technician can place a test set, or a heat coil socket.

Distribution frame

optical distribution frameDDFframe
Others are physical, like a punch down COSMIC frame where a technician can place a test set, or a heat coil socket.

Outside plant

outdoor landlinesroadside cabinetsingle cable
In the outside plant there is an appearance at the cross box, pedestal, and network interface.

Network interface

interfaceinterface connectivityinterface(s)
In the outside plant there is an appearance at the cross box, pedestal, and network interface.

Customer-premises equipment

customer premises equipmentCPEcustomer premises
The ultimate appearance is the telephone or other customer premises equipment (CPE).

Serving area interface

cabinetisation Telecoms Cabinetcabinet
The SAI provides the termination of individual twisted pairs of a telephony local loop for onward connection back to the nearest telephone exchange (US: "central office" (CO)) or remote switch, or first to transmission equipment such as a subscriber loop carrier multiplexer and then to the exchange main distribution frame (MDF).