The trouble is, the architecture of conventional phone systems dates back to a time when 
going to work meant going to an office. Many were even designed when smartphones 
were considered nothing but science fiction. Today’s workers require more agility and 
capabilities than these systems support. For example, your aging phone system may 
not provide direct access to company voicemail from a mobile device, which could delay 
responses to customers. You can’t afford to miss sales or lose customers because they 
can’t communicate with you when and how they like.