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Single-line
adapter (RJ11)
2-Line adapter
(RJ14)
(267C)
66-Type block (RJ21-type) 25 line interface
Line 1
Line Tip Ring Phone Number
1 1
26
555-3827
2 2 27
555-3828
3 3 28 555-3829
Line
2
Line 3
● ● ● ●●●
● ● ● ●●●
25 25 50 555-3851
Line 4
Line 5
Line 6
Line 25
FIGURE 2-4 Network interface adapters.
2-18 Wiring the System