For those of you happy with and hanging on to your old Altigen software level, here's a tip for when you need to rebuild.
On 4.5, agents are logged out of workgroups when a system reboots. There is a registry setting to maintain their status, or even automatically log them all in after a reboot.
The key is located at:
HKLM\Software\Altigen Communications Inc.\Altiware\DisableAgentAutoLogout
0 = logout all agents on reboot (default)
1 = maintain agent login status
2 = login all agents after reboot (this is what older versions did)
You need to edit the key and reboot the server (not just restart the services).