You can use DSCP tags in Microsoft Windows domains to let your network appliances know how to prioritize traffic. For example, it’s common that RTP traffic (audio) in a VoIP call gets a DSCP tag of 46. This allows you to set up custom traffic shaping rules that prioritize your Talk traffic and increase your overall call quality.
Windows overwrites DSCP values that are set by applications and sets them to 0; basically, it doesn't trust software to set these values. Because of this there are some settings that you'll need to modify so that your traffic gets tagged appropriately.
For more information, see Microsoft’s Quality of Service (QoS) Policy
Generally only customers that have a large number of agents on the same network using Talk should consider configuring this.
This article contains the following sections:
Setting Up Group Policy rules
You control the QoS settings that are used for certain applications by creating Group Policy rules.
To create a Group Policy rule
- In Windows, open a command prompt and type “gpedit.msc” to open the local Group Policy editor.
- In the Group Policy editor, under Computer Configuration, right-click Policy-based QoS settings and select Create New Policy. You'll then follow a wizard to configure the QoS rules to use.
- On the first page, enter “Zendesk Talk Policy” for the policy name and specify a DSCP value of “46“, then click Next.
- On the second page, specify which applications the policy applies to. Select All applications, then click Next.
- On the third page of the Wizard, you can limit both the source and destination IP address. Select Any source IP address and Any destination IP address. When you are finished, click Next.
- In the fourth and final screen, under Select the protocol that this QoS policy applies to, select TCP and UDP. Under Specify The source port number, select From any source port and under Specify the destination port number, select To any destination port.
- When you are ready, click Finish.
- After you complete these changes, you'll need to restart for the settings to take effect or refresh the group policy on each client machine.