Call Recording: Get your people trained. Not only can you listen to your incoming and outgoing phone calls with an attentive ear, which will help identify training opportunities, but employees will immediately perform better on the phones if they know they are being monitored.
Separate Connections for Computers and Phones: So you never experience audio slow-down.
Disaster Recovery: Are you prepared if your system gets hit by lightning? Lost calls are lost revenue. Make sure your calls get answered.