noun
telephone company; telephone office
Refers to a telephone company or its local office, especially in the context of landline services. In modern usage, it may sound somewhat dated as many functions have been absorbed by broader telecom providers.
電話局に電話回線の移転を申し込んだ。
I applied to the telephone company for a transfer of my phone line.
Compound of 電話 (telephone) and 局 (office, bureau).