Fanvil SIP Ceiling Speaker FH-S01

        Key features
Integrate network audio codec, digital amplifier, and speaker 
Link security alarm equipment
Supports intercom application
Insert high-fidelity speaker
Adjust volume remotely with the Web page
Adaptive 10/100 Mbps network port, integrated PoE
Compatible with major IP PBX / soft switch /IMS platforms based on SIP, such as Asterisk, BroadSoft, 3CX, metaswitch, Elastix, Avaya, etc.