QoS for SfB when using Cloud PBX and PSTN Calling

Hello Himanshu!

The PowerShell you need should be in the above thread however you can try mine:

#Written by Jason Wynn - as is - currently conigured for test only
#Import the Powershell Module for Active Directory and Group Policy
Import-Module ActiveDirectory,GroupPolicy

#Create a new Group Policy Object (GPO) that will be applied to the Organizational Units (OU's) that contain the computer objects that will be used by the Skype for Business users.
#The value "Skype for Business Online client - QoS" can be modified to fit your needs or naming standards
New-GPO -Name "Skype for Business Online Client - QoS" -Comment "QoS/DSCP markings for Skype for Businessa media traffic. That contain the computer objects that will be used by the Skype for Business users."

#Create Registry Value to enable TCP/IP QoS on the computer
Set-GPPrefRegistryValue -Name "Skype for Business Online Client - QoS" -Context Computer -Key "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\QoS" -ValueName "Do not use NLA" -Value "1" -Type String -Action Update

#Create Registry Value for Skype for Business client Audio QoS in the "Skype for Business Client - QoS" GPO
Set-GPRegistryValue -Name "Skype for Business Online Client - QoS" -Key "HKLM\SOFTWARE\Policies\Microsoft\Windows\QoS\Skype for Business Online Audio QoS - lync.exe" -ValueName "Version", "Application Name", "Protocol", "Local Port", "Local IP", "Local IP Prefix Length", "Remote Port", "Remote IP", "Remote IP Prefix Length", "DSCP Value", "Throttle Rate" -Type String -Value "1.0", "lync.exe", "*", "50000:50019", "*", "*", "*", "*", "*", "46", "-1"

#Create Registry Value for Skype for Business client Video QoS in the "Skype for Business Client - QoS" GPO
Set-GPRegistryValue -Name "Skype for Business Online Client - Qos" -Key "HKLM\SOFTWARE\Policies\Microsoft\Windows\QoS\Skype for Business Online Video QoS - lync.exe" -ValueName "Version", "Application Name", "Protocol", "Local Port", "Local IP", "Local IP Prefix Length", "Remote Port", "Remote IP", "Remote IP Prefix Length", "DSCP Value", "Throttle Rate" -Type String -Value "1.0", "lync.exe", "*", "50020:50039", "*", "*", "*", "*", "*", "34", "-1"

#Create Registry Value for Skype for Business client Application Sharing QoS in the "Skype for Business Client - QoS" GPO
Set-GPRegistryValue -Name "Skype for Business Online Client - Qos" -Key "HKLM\SOFTWARE\Policies\Microsoft\Windows\QoS\Skype for Business Online App Sharing QoS - lync.exe" -ValueName "Version", "Application Name", "Protocol", "Local Port", "Local IP", "Local IP Prefix Length", "Remote Port", "Remote IP", "Remote IP Prefix Length", "DSCP Value", "Throttle Rate" -Type String -Value "1.0", "lync.exe", "*", "50040:50059", "*", "*", "*", "*", "*", "24", "-1"

#Create Registry Value for Skype for Business client File Transfer QoS in the "Skype for Business Client - QoS" GPO
Set-GPRegistryValue -Name "Skype for Business Online Client - Qos" -Key "HKLM\SOFTWARE\Policies\Microsoft\Windows\QoS\Skype for Business Online File Transfer QoS - lync.exe" -ValueName "Version", "Application Name", "Protocol", "Local Port", "Local IP", "Local IP Prefix Length", "Remote Port", "Remote IP", "Remote IP Prefix Length", "DSCP Value", "Throttle Rate" -Type String -Value "1.0", "lync.exe", "*", "50040:50059", "*", "*", "*", "*", "*", "24", "-1"

This will create the group policy objects (GPO) that you need to apply to your Skype for Business client/users.

To validate this you need to trace on the switches or the local machines to verify it is going via the ports to do so.  You can use netmon or wireshark to trace the ports and verify the ports are as expected or it will just go via the path of least resistance and use 443 or 3478, from memory. 

Good Luck, don't be afraid to ask if you've got anything else!