Asterisk OpenBTS

OpenBTS or Asterisk. Using OpenBTS linked to an open-source voice server running software such as Asterisk, a distributed network now has the ability to make voice calls without going back to the centralized core network of a wireless or wireline carrier. If one hooks a server running OpenBTS to an Asterisk server on a Commotion network, then voice calls via VoIP are now available via the existing GSM radios on the phones, even without using something like Serval.