MyPBX is a classic Asterisk deployment on dedicated hardware. It supports ISDN and SIP trunks, plus a range of third party handsets. Configuration is done using the HTTP interface.
Firmware Requirements (for new installations):
184.108.40.2064 or later
Recent firmware is required (220.127.116.114 or later) to give full call control. Also "call waiting" should be disabled on the handsets to allow consultation to be used.