Grandstream

PBX with 2FXO+2FXS 3 LAN&WAN GigE ;150 Concurrent call with 1,000 users; LCD touch screen , 3 VDO Room 20 Parties

IP PBX with 4FXO+4FXS 3 LAN&WAN GigE ; 300 Concurrent call with 2,000 users; LCD touch screen 4 VDO Room 40 Parties 200 Sip Trunk.

IP PBX with 8FXO+8FXS 3 LAN&WAN GigE ; 450 Concurrent call with 3,000 users; LCD touch screen 8 VDO Room 60 Parties