Onlight can help you build your own multiprotocol PBX on Linux.
Asterisk is a complete PBX in software. Asterisk is open-source software that runs on a wide variety of operating systems including Linux, Mac OS X, OpenBSD, FreeBSD and Sun Solaris and provides everything you would expect from a PBX — including many advanced features usually associated with high end (and high cost) proprietary PBX products.
The Asterisk architecture can interface with most telephony equipment using relatively inexpensive hardware, and the flexible design supports Voice over IP in many protocols. Using the Inter-Asterisk eXchange (IAX) VOIP protocol, Asterisk merges voice and data traffic seamlessly across disparate networks. While using Packet Voice protocol, it can send data such as URL information and images in-line with voice traffic, allowing advanced integration of information.
Onlight provides a full range of Asterisk consulting and integration including:
- Turn-key Asterisk PBX systems
- High-availability and fail-over systems to match the reliability of commercial PBX hardware
- Dial plan consulting to fit Asterisk into your unique business needs
- Integration with existing PBX system
- Voicemail services with Directory
- Call Conferencing
- Interactive Voice Response
- Call Queuing
- Three-way calling
- Caller ID services
- H.323 (as both client and gateway)
- A number of hardware devices
- A wide range of TDM protocols for the handling and transmission of voice over traditional telephony interfaces