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: Continue reading

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. Continue reading

Cannot insert duplicate key row in object ‘dboAgents’ with unique index ‘IX_Agents_UserSid’

If you need to quickly move a user from one Response Group to another, you may well encounter the following error message…. Wait for the following message in the event viewer. (It takes some time to update) Then add the user to the new Reponse Group

How to preload attachments for Skype for Business Online meetings

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

QoS troubleshooting with Wireshark

QoS 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 Right click on one of the existing columns. Click on column preferences Click Add down the bottom Click on the “New Column” Label and change it to “DSCP” then hit enter once. With the new entry highlighted, change the Field Type to Custom (in the dropdown box) In field name, copy and paste in _ip. Continue reading

Polycom Trio 8800 failed to discover exchange server (Office365)

Problem Deployed some Polycom Trio’s in my organisation (we’re running Exchange Online and Skype for Business Online) and everytime i went to the Calendar the Polycom was showing an error “Failed to discover exchange server”. How to solve this error Login to the webinterface from the Polycom Trio 8800 (first time enable HTTP/HTTPS connection from the Polycom Advanced Option, Default password is “456”) Go to Settings > Applications Disable the AutoDiscover and Fill in the following Exchange Server url: Continue reading

No presence information in Outlook (Skype for Business)

The issue 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] Continue reading