Asterisk-based telephony solutions offer a rich and flexible feature set. Asterisk offers both classical PBX functionality and advanced features, and interoperates with traditional standards-based telephony systems and Voice over IP systems. Asterisk offers the advanced features that are often associated with large, high end (and high cost) proprietary PBXs.


  • Alarm
  • Append Message
  • Automated Attendend
  • Blacklist
  • Call Transfer
  • Call Detail Records
  • Call Forward on Busy
  • Call Forward on No Answer
  • Call Forward Variable
  • Call Monitoring
  • Call Parking
  • Call Queuing
  • Call Recording
  • Call Retrieval
  • Call Routing
  • Call Waiting
  • Caller ID
  • Call Conference
  • Database Store/Retrieve
  • Interactive Directory Listing
  • Interactive Voice Response (IVR)
  • Local and Remote Call Agents
  • Music On Hold
  • Volume Control
  • Three-way Calling
  • Trunking
  • VoIP Gateways
  • Voicemail
  • Computer-Telephony Integration
  • AGI (Asterisk Gateway Interface)
  • Graphical Call Manager
  • Outbound Call Spooling
  • Predictive Dialer
  • TCP/IP Management Interface
  • Scalability
  • TDMoE (Time Division Multiplex over Ethernet). Allows direct connection of Asterisk PBX. Uses commodity Ethernet hardware, Voice-over IP, Allows for integration of physically separate installations Uses commonly deployed data connections. Allows a unified dial plan across multiple offices.