Network Performance requirements

Network Performance requirements from a Skype for Business client to Microsoft network Edge

For optimal Skype for Business media quality, the following network performance metrics targets or thresholds are required for a connection from your company’s network to the Microsoft network Edge. This segment of the network includes your internal network, this includes all WiFi and Ethernet connections, any company site-to-site traffic over a WAN connection, for example Multiprotocol Label Switching (MPLS), as well as the Internet or ExpressRoute partner connections to the Microsoft network Edge.

Caution: Connectivity between a Skype for Business client on your company network to Office 365 services must meet these following network performance requirements and thresholds.

Metric Target
Latency (one way) < 50ms
Latency (RTT or Round-trip Time) < 100ms
Burst packet loss <10% during any 200ms interval
Packet loss <1% during any 15s interval
Packet inter-arrival Jitter <30ms during any 15s interval
Packet reorder <0.05% out-of-order packets

Other performance target requirements:

  • The Microsoft network has over 160 Edge locations worldwide. We work with major Internet Service Providers (ISPs) worldwide through those Edge sites. The latency metric target assumes your company site or sites and the Microsoft Edges are on the same continent.
  • Your company site or sites to the Microsoft network Edge connection include first hop network access, which can be WiFi or another wireless technology.
  • The network performance target assumes proper bandwidth and/or quality of service planning. In other words, This applies directly to Skype for Business Real-Time media traffic when the network connection is under a peak load.

Network performance requirements from your network Edge to Microsoft network Edge

The following are the network performance targets or thresholds that are required for the connection between your network Edge and the Microsoft network Edge. This segment of the network excludes the customer’s internal network or WAN, and is intended as guidance when testing your network traffic that is sent over the Internet, or through an ExpressRoute partner network and can also be used when negotiating a performance Service Level Agreement (SLA) with your ExpressRoute provider.

Caution: Connectivity between your company network Edge to the Microsoft network edge must meet these following network performance requirements and thresholds.

Metric Target
Latency (one way) < 30ms
Latency (RTT) < 60ms
Burst packet loss <1% during any 200 ms interval
Packet loss <0.1% during any 15s interval
Packet inter-arrival Jitter <15ms during any 15s interval
Packet reorder <0.01% out-of-order packets

Other performance target requirements:

  • The performance target requires connection between any of your company’s network Edge and its nearest Microsoft network Edge, to be on the same continent.
  • The network performance target assumes proper bandwidth and/or quality of service planning. This also applies to Skype for Business Real-Time media traffic when the network connection is under a peak load. For proper bandwidth and QoS planning, please refer to ExpressRoute and QoS in Skype for Business Online.

How to preload attachments for Skype for Business Online meetings

Skype for Business

There’s a new feature in Skype for Business Online, you can now preload documents for Skype Meetings.

Note: This only works for Skype for Business Online!

Let’s Go

  • Create a new Skype meeting in Outlook
  • Go to the insert tab, click Attach File (or outlook item) and select the attachment you want to add in the meeting.
  • Now just send the meeting!

When you join the meeting a information bar will display saying: meeting content is addedd

  • Click the screen item (with the red dot) and select manage content.
  • As presenter you can change the permissions to the file. Default only other presenters can download.
  • Click the lock icon the change the permissions to “Everyone”, “Presenters” or “Organizer”.
  • In the next and example you will see the other party when permission is set to Everyone
  • Click open to open the attachment.

  • Enjoy!

No presence information in Outlook (Skype for Business)

Got an issue after installing the Mitel MiCollab software. Microsoft Outlook did not display the status of Lync/Skype anymore. Also in my Outlook client the information from GAL (Global Address List) was not visable anymore when hovering over a name.

Some other issues i found out:

  • The Microsoft SharePoint client/web does not display presence information.
  • Other Microsoft Office applications that support presence features do not display presence information

The Solution

This behavior may occur if the value of the DefaultIMApp registry entry in the following registry key is incorrect:

First, look at this location in the registry…

[HKEY_CURRENT_USER\Software\IM Providers] 

It should show this value:

“DefaultIMApp”=”Lync”

If there is any other value, change it back to “Lync”, in this case the MiCollab software is changing this value to “Micollab”.

Now restart Outlook and see if your presence indicators are back.

Note: The DefaultIMApp registry entry specifies which IM application provides IM and presence information in Office applications.

Cheat sheet – Skype for Business

Skype for Business

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Yealink Skype for Business Firmware

Yealink is continuing its legacy of innovation with the delivery of an end-to-end unified communications (UC) solution for Microsoft environments. The UC Edition of its IP phones is customizable and seamlessly integrates with user workflows. UC Edition phones, crafted with new features tailored for Skype for Business/Lync, extend the communication experience and facilitate better collaboration.

Yealink has certified the following models for a direct connection with Skype For Business:

  • T40P
  • T41P
  • T42G
  • T46G
  • T48G
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