Complex sentence: Multiple technologies are employed depending on the PBX solution, the core telephony engine in Schmooze PBX products is Asterisk PBX and maintained by the Open Source FreePBX GUI.
Split into simpler sentences: Multiple technologies are employed depending on the PBX solution. The core telephony engine in Schmooze PBX products is Asterisk PBX and maintained by the Open Source FreePBX GUI.