, : -- -- HDD : 13 25, 2016 400 0 0 4 FreeSWITCH Asterisk 07, 2017 3000 0 0 5 Cisco Unified Real-Time Monitoring Tool 20, 2017 280 0 0 3 CUCM 11 25, 2018 0 0 0 6 Linux VMware 31, 2020 6770 0 0 25 Windows 10: 8 9, 2020 6050 0 0 6 19, 2020 380 0 0 6 Linux 10, 2020 11000 80 0 10 Linux 2, 2020 1760 0 0 7 VMware VirtualBox: 12, 2020 7630 80 0 34 1 2