Yxa is a program

Program

Program may refer to:* Computer program* Program , those executed by machines that are not computers* A synonym for patch, a synthesizer setting stored in memory.* The trade name for lufenuron, a veterinary flea control medication...

 written in Erlang implementing a telephone private branch exchange (PBX) was written by Magnus Ahltorp at Royal Institute of Technology

Royal Institute of Technology

The Royal Institute of Technology is a university in Stockholm, Sweden. KTH was founded in 1827 as Sweden's first polytechnic and is one of Scandinavia's largest institutions of higher education in technology. KTH accounts for one-third of Sweden’s technical research and engineering education...

 (KTH) in the end of 2002.
In February 2003, Fredrik Thulin of Stockholm University

Stockholm University

Stockholm University is a state university in Stockholm, Sweden. It has over 28,000 students at four faculties, making it one of the largest universities in Scandinavia. The institution is also frequently regarded as one of the top 100 universities in the world...

 joined in, working on new functionality and RFC compliance. It implements Voice over Internet Protocol (VoIP) services. Its name comes from Ericsson PBX systems called AXE. Axe translated to swedish is Yxa.

See also

• Voice modem
• Comparison of VoIP software
  Comparison of VoIP software
  VoIP software is used to conduct telephone-like voice conversations across Internet Protocol based networks. VoIP stands for "Voice over IP". For residential markets, VoIP phone service is often cheaper than traditional public switched telephone network service and can remove geographic...
  
  
• List of SIP software
• IP PBX
  IP PBX
  An IP PBX is a business telephone system designed to deliver voice or video over a data network and interoperate with the normal Public Switched Telephone Network ....
  
  
• VoIP