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!

How can I fix error code 0x80310000 for windows 10 mobile update?

Windows 10 Mobile

I am using an Microsoft Lumia 830 for work. Every time I try to get the “Microsoft Update for Windows Phone-Windows 10 Mobile 10.0.14393.1066, the phone downloads the update, but cannot install it.

I received error code 0x80310000.

How to fix this error (0x80310000):

Turn off your device encryption if you have it turned on. It helped for me, make sure you reboot your device after deactivating device encryption.

It seems that when the update is going to be installed (gears screen/bootloader) it can’t read encrypted data.

QoS troubleshooting with Wireshark

During my work i have a lot of VoIP traffic related queries/questions. I’m using this configuration to check if packets are being tagged with the right DSCP values.

Add DSCP column to your Wireshark Client

1. Right click on one of the existing columns.
2. Click on column preferences
3. Click Add down the bottom
4. Click on the “New Column” Label and change it to “DSCP” then hit enter once.
5. With the new entry highlighted, change the Field Type to Custom (in the dropdown box)
6. In field name, copy and paste in ip.dsfield.dscp
7. Click Apply/Ok

You can drag the column back to the left side of the Info column and you now have a simple view of the tag for any packet.

Filter

You can also set a filter to capture all packets with DSCP value 46

ip.dsfield.dscp == 46

Reference

Here’s a table of DSCP and TOS values in their most common formats just for reference.
TOS (Dec) TOS (Hex) TOS Precedence Name TOS Delay flag TOS Throughput flag TOS Reliability flag DSCP (Hex) DSCP (Dec) DSCP/PHB Class
0 0x00 Routine 0 0 0 0x00 0 none
4 0x04 Routine 0 0 1 0x01 1 none
8 0x08 Routine 0 1 0 0x02 2 none
12 0x0C Routine 0 1 1 0x03 3 none
16 0x10 Routine 1 0 0 0x04 4 none
32 0x20 Priority 0 0 0 0x08 8 cs1
40 0x28 Priority 0 1 0 0x0A 10 af11
48 0x30 Priority 1 0 0 0x0C 12 af12
56 0x38 Priority 1 1 0 0x0E 14 af13
64 0x40 Immediate 0 0 0 0x10 16 cs2
72 0x48 Immediate 0 1 0 0x12 18 af21
80 0x50 Immediate 1 0 0 0x14 20 af22
88 0x58 Immediate 1 1 0 0x16 22 af23
96 0x60 Flash 0 0 0 0x18 24 cs3
104 0x68 Flash 0 1 0 0x1A 26 af31
112 0x70 Flash 1 0 0 0x1C 28 af32
120 0x78 Flash 1 1 0 0x1E 30 af33
128 0x80 FlashOverride 0 0 0 0x20 32 cs4
136 0x88 FlashOverride 0 1 0 0x22 34 af41
144 0x90 FlashOverride 1 0 0 0x24 36 af42
152 0x98 FlashOverride 1 1 0 0x26 38 af43
160 0xA0 Critical 0 0 0 0x28 40 cs5
176 0xB0 Critical 1 0 0 0x2C 44 voice-admit
184 0xB8 Critical 1 1 0 0x2E 46 ef
192 0xC0 InterNetworkControl 0 0 0 0x30 48 cs6
224 0xE0 NetworkControl 0 0 0 0x38 56 cs7