Assign different functions to each keypad number. These settings direct your customers where they need to go when they enter a specific number on their phone.
Website: https://www.att.com/support/smallbusiness/article/smb-local-long-distance/KM1200757

An auto-attendant message is the first interaction your customers or potential customers will have when they call. With today’s robus phone systems, don’t miss the opportunity to maximize caller interaction. With a well-produced phone menu, you can demonstrate your organization’s proficiency, reduce call wait times and reduce the amount of time spent routing callers. Route callers to the correct extension Prevent misrouted calls and reduce caller frustration Free up operators and agents to perform more productive tasks Conveniently route multilingual callers to an appropriate agent or telephone interpreting service Impress callers and reinforce company reputation with a voice that represents your brand
Many of our users don’t need calls routed to their phone, they just want a good virtual voicemail system. We can do that, too. Just set up your VirtualPBX account with multiple voicemail boxes for each user or purpose you need. Furthermore, we can route calls directly to voicemail, without ringing a phone first.