We found one dictionary that defines the word telephone circuits:

General (1 matching dictionary)

1. telephone circuits: Vocabulary.com

(Note: See telephone_circuit as well.)

Definitions from WordNet (telephone circuit) ▸ noun:  a telephone connection ▸ Also see telephone_circuit ▸ Words similar to telephone circuits ▸ Usage examples for telephone circuits ▸ Idioms related to telephone circuits ▸ Wikipedia articles (New!) ▸ Words that often appear near telephone circuits ▸ Rhymes of telephone circuits ▸ Invented words related to telephone circuits