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 ?