pon auto detection of PoE or PoE+
The Grandstream UCM6304 is an enterprise-grade IP PBX that supports up to 2,000 users and 300 concurrent calls, offering a unified communication platform with built-in voice, video, meetings, chat, mobility, and advanced security—ideal for scalable business collaboration.
16 lines with up to 16 SIP accounts
Built-in mega-pixel camera for video calling with privacy shutter
Runs on Android 7.0 operating system
Built-in Bluetooth for syncing with mobile devices and connecting
Grandstream UCM6308 IPPBX Support up to 1500 Users and 200 Concurrent calls
DEF-ODH04E 
ZKTeco Fingerprint+RFID+ Password Access Control (X6) 
