I am writing from a call centre perspective. The entire organization uses Versature for its administrative telephone lines and not its call centre lines. It offers a solution for administrative outbound calls and allows everyone an inbound telephone line with an extension. Every individual uses the voicemail feature, the answering rules (i.e. between 9 am and 12 noon on Wednesdays, the line should go directly to voicemail; but that afternoon, it should be transferred to a cell phone, etc.), and the voicemail transcription (voicemails are recorded and received by email with a helpful transcription that allows you to scan the message to see if it needs to be listened to right away or if it can wait) features. When people call in our administrative line, we use the auto attendant feature to guide them to the appropriate staff member. We also appreciate the three-way call conferencing feature and the easy-to-use call transfer process.