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单项选择题The VBB Company wants to find out which set of progress tones and cadences are supported with its local Cisco Unified CallManager Express service. Which command should be used?()

A、VBBRtr(config-telephony)#user-network ? 

B、VBBRtr(config-telephony)#local-network ? 

C、VBBRtr(config-telephony)#language-type ? 

D、VBBRtr(config-telephony)#network-locale ? 

E、VBBRtr(config-telephony)#network-language ?

  • D
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