Grandstream UCM6308 Central UCM6308 is an IP PBX device that is an ideal solution for sectors that are looking for an ideal solution to control their communications with many features such as an advanced answering tree, call recording, call center, caller ID, call waiting, distribution Automatic calls, faxes via e-mail, video calls, in addition to support for audio and video conferencing, as it allows employees to communicate via computers and mobile phones. Central Grandstream UCM6308 Specifications Supports 3000 users Supports 450 concurrent calls Supports 8 FXS ports RJ11 analog switches Supports 8 FXO ports RJ11 external lines Supports 3 Gigabit ports with POE + port Supports USB 3.0 port, SD card interface port Supports LED indicator LED LCD screen with a resolution of 128 * 32 supports 10 meeting rooms -Video Conference