公用交換電話網

公用交换电话网
gōngyòngjiāohuàndiànhuàwǎng
(Tw) public switched telephone network (PSTN)

CEDICT

taiwan

Entry Composition

1 公用 gōngyòng
  1. public
  2. for public use
2 交換 jiāohuàn
  1. to exchange
  2. to swap
  3. to switch (telecom)
  4. commutative (math)
  5. to commute
3 電話網 diànhuàwǎng telephone network