, : -- -- Framework : 12 Apache IIS 08, 2016 6000 90 0 5 FreePBX13 CLI () 22, 2016 2900 0 9 1 FreePBX 13 22, 2016 1000 0 2 4 FreePBX 13 28, 2016 0 0 4 4 Cisco ASA: 19, 2018 270 0 0 3 Windows 2008 R2 22, 2019 16380 170 0 6 10 , Windows PowerShell 12, 2020 12060 40 1 8 Windows Server 2016 15, 2020 2000 10 0 3 Open Source 31, 2020 4550 0 0 15 Thankuohoh | Asterisk 12, 2020 3640 90 3 8 1 2
