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Home USA Telephone Wiring Color Code CSFrontTelephoneJack-Copyright-440x678-IMG_0236

CSFrontTelephoneJack-Copyright-440×678-IMG_0236

The blue pair and orange pair are both connected to the telephone jack.

“Tip” refers to that side of a two wire telephone circuit which is connected to the positive side of a battery at the telephone company central office.
“Ring” refers to that side of a two wire telephone circuit which is connected to the negative side of a battery at the telephone company central office.

Placement of 4 pairs on a jack or a plug
Rear of phone jack with blue pair attached