多项选择题
A. Call management software
B. Media Convergence Servers (MCSs)
C. Voice gateways
D. IP telephones
多项选择题 Small businesses face unique customer challenges, which three challenges are small businesseslooking to overcome?()
单项选择题 What feature does the Partner E-Learning Connection provide?()
单项选择题 Which network technology addresses these customer business needs: shrinking budgets and ITstaffs, more complex networks, and an increased need for network security?()