You are CCNA VOICE associate in .com and you want to install a new UC500 solution. Which information from the existing numbering plan that helps you design an effective VoIP dial plan? (Choose all the apply.)
number of digits forwarded by the local CO
direct inward dial ranges
length of internal number extensions
Want to practice for 640-460 - IIUC Implementing Cisco IOS Unified Communications (IIUC) ?