What is the meaning of call up?

noun

• An order to report for military duty.

verb

• Bring forward for consideration.
  • usage: "The case was called up in court"
  • synonyms: bring forward
• Get or try to get into communication (with someone) by telephone.
  • usage: "I tried to call you all night"; "Take two aspirin and call me in the morning"
  • synonyms: call, telephone, phone, ring
• Recall knowledge from memory; have a recollection.
  • usage: "I can't remember saying any such thing"; "I can't think what her last name was"; "can you remember her phone number"; "Do you remember that he once loved you"; "call up memories"
  • synonyms: remember, retrieve, recall, call back, recollect, think
• Call to arms; of military personnel.
  • synonyms: mobilize, mobilise, rally