You support a Skype for Business Server 2015 environment that consists of the following:
A single Skype for Business Server 2015 Standard Edition pool that is located in a main office.
Four branch offices that are connected by a 9 megabits per second (Mbps) dedicated wide area network (WAN) link, each of which has 300 users.
You need to be able to support 75 concurrent calls.
Users in the branch offices report poor quality audio during conferences. You perform the following troubleshooting steps:
Implemented Quality of Service (Qos) and Call Admission Control (CAC). In CAC, defined the main office and each branch office as a site In CAC, associated subnets to the relevant sites. Provisioned policy-based QoS for media traffic.
Poor audio quality persists.
You run the Skype for Business Management Shell Get-CsNetworkSite cmdlet. The relevant portion of the results are shown below:
You need to improve audio quality.
What should you do?