SIP Error 485 Ambiguous

A customer was facing the problem that it was not possible to reach a certain contact person on his E164 number.

The first thing to check was in this case the Audiocodes Syslog Viewer. What is happening with the call? Does the call reach the Mediant or Skype for Business Server?

So i called the number from my own Skype for business Client. I received the following error.

Let’s check the Syslog Viewer:

The first thing i saw was the 485 Ambiguous SIP response from the Skype for Business Mediation role.

Error 485 means there are more destinations with the same LineUri, this can be in Users but also with Response Groups

Fire up Powershell with the script from Andrew Morpeth (Lync Get All Assigned Numbers), This script will export all objects with a LineUri to CSV. Make sure you edit the location in the script, by default it will write in C:/ Root.

Go to the location and open the CSV file with Excel or any other editor. Search for the number and you’ll see what is causing the problem. 2 Users where assigned with the same number.

Remove the number from one of the users and your problem is fixed.

#EOF

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.