MyPBX E1 is a standalone embedded hybrid PBX for small businesses and remote branch offices that offers both VoIP and traditional telephony solutions. It supports up to 100 users and 22 concurrent calls, has E1/T1/J1 ports, 8 analog ports, and features like voicemail, conferencing, and call routing. The compact device has ample processing power and memory as well as standard and wideband codecs for high quality calls.