打通

dǎtōng
  1. to open access
  2. to establish contact
  3. to remove a block
  4. to put through (a phone connection)

CEDICT

Entry Composition

1 打 dǎ
  1. a semantically light, transitive verb that is combined with various grammatical objects to form compound verbs and verb-object phrases with a diverse range of meanings (e.g. 打伞 dǎsǎn "to hold an umbrella", 打电话 dǎdiànhuà "to make a phone call", 打针 dǎzhēn "to get an injection", 打手套 dǎshǒutào "to knit gloves", 打气 dǎqì "to inflate")
  2. to hit; to strike
  3. to fight
  4. (coll.) from; since (as in 打那以后 dǎnàyǐhòu "since then")
2 通 tōng
  1. to go through
  2. to know well
  3. (suffix) expert
  4. to connect
  5. to communicate
  6. open
  7. to clear
  8. classifier for letters, telegrams, phone calls etc