Single-IPBX Group Features

Single IPBX products come with fundamental group features built-in:

Group Features	PBX	Trunk	Lines	SOHO
Auto Attendant
Incoming Calling Plan
Outgoing Calling Plan
Hunt Group
Music On Hold
User Portal Access
Voice Messaging Portal

 ... and you can add more:

Group Features	PBX	Trunk	Lines	SOHO
Account/Authorization Codes
Group Call Capacity Management
Call Park
Call Pickup Group
Call Center
Device Inventory
Group Call Intercept
Instant Group Call
LDAP Directory Integration
Series Completion