Archive for Lync 2013

Audio Conferencing Diagram

Microsoft Audio Conferencing; how can you not love a feature that’s so high impact, requires such minimal configuration, and enhances meeting experiences so greatly.  Formerly known as PSTN Conferencing, the service is now available through the Microsoft Teams application as well as Skype for Business Online, and provides a means by which meeting participants can dial-in to scheduled meetings. As a public display of affection, I’ve put together the below high-level Audio Conferencing diagram that can either be referenced during a technical explanation of the service, or printed onto A4 … Read the rest

Extending Skype for Business Certificate Validity

One of the things I love most about working with Skype for Business and Microsoft UC is how much the platform bleeds into other technologies and products. The net result is that in addition to being subject matter experts, consultants are often very well versed in multiple disciplines and possess an extremely well rounded skill set. Whilst browsing the TechNet forums recently, I saw a post asking for guidance around extending the validity of Lync / Skype for Business certificates beyond the default setting of what is typically two years … Read the rest

BT SIP Trunk – Calls Dropping After 2 Minutes on Mute

I recently ran into an issue whereby calls from a Skype for Business platform to the PSTN via a BT SIP trunk would drop after being on mute for exactly two minutes (120 seconds). In fact it didn’t matter if the call originated form the PSTN side either. The SIP trunk was terminated on an AudioCodes E-SBC Mediant 1000 running 6.8 firmware, and the problem could be replicated 100% of the time without fail. Anyone who regularly deploys and configures AudioCodes appliances will know that the vast array of configuration … Read the rest

Unified Messaging can’t save the PIN for mailbox…

I recently experienced an issue within a reasonably large organisation when trying to enable Skype for Business / Lync users for Unified Messaging. The Microsoft Exchange messaging environment was in a healthy working state, with no indications of any other problems. However when attempting to enable a user for Unified Messaging (regardless of whether this was through the Exchange management shell or control panel), the process resulted in “Unified Messaging can’t save the PIN for mailbox… there was an error accessing the mailbox using EWS”

At the same time the … Read the rest

Cannot Grant ReportsReadOnlyRole to User

Cannot grant ReportsReadOnlyRole to a User is an error that you might receive when attempting to deploy Skype for Business monitoring reports – a component that should always be configured alongside any Enterprise Voice deployment due to the wealth of information that it can provide on the quality and quantity of the communication sessions that take place inside your environment. Skype for Business monitoring reports are not deployed during the publishing of the monitoring databases themselves, and should instead be deployed desperately using the Skype for Business deployment wizard. During … Read the rest

PSTN calls dropping after 30 minutes with AudioCodes SBC

Consider the scenario – You have a Lync or Skype for Business platform sat behind an AudioCodes gateway or SBC. When placing an outbound call to the PSTN, the call establishes and flows correctly for exactly 30 minutes. At the 30 minute point you lose audio, and 30 seconds later the call drops completely. Peer to peer internal, external and federated calls work fine. If you run a syslog trace on the SBC, you’ll see that the BYE message is being generated by Lync / Skype for Business, so we … Read the rest

Assign Active Directory Telephone Numbers in Bulk

Skype for Business best practice has always dictated that whenever and wherever we define telephone numbers (DDI’s / Line URI’s), we do so in E.164 – the standard for PSTN numbers which ensures each is globally unique. Additionally, maintaining this standard across our organisation means a consistent number presentation format for end users, so we’re not seeing +441392123456 in some places, and 01392123456 in others. Knowing this, the number defined in an Active Directory telephone field of a user object should also be defined in E.164, and as a result … Read the rest

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