All servers that are part of geographically dispersed clusters must be part of the same stretched VLAN, using the same Layer-2 broadcast domain. All other internal servers running Lync Server server roles can be on a subnet within that server’s local data center. Edge Servers must be in the perimeter network, and should be on a different subnet than the internal servers. Also, the perimeter network need not be stretched between sites.

Synchronous data replication must be enabled between the primary and secondary sites, and the vendor solution that you employ must be supported by Microsoft.

Round-trip latency between the two sites must not be greater than 20 ms.

Available bandwidth between the sites must be at least 1 Gbps.

A geographically dispersed cluster solution based on Windows Server 2008 R2 Failover Clustering must be in place. That solution must be certified and supported by Microsoft, and it must pass cluster validation as described in the Windows Server 2008 R2 documentation. For details, see the “What is cluster validation?” section of “Failover Cluster Step-by-Step Guide: Validating Hardware for a Failover Cluster” at http://go.microsoft.com/fwlink/?linkid=142436.

All geographically dispersed cluster servers must be running the 64-bit edition of Windows Server 2008 R2.

All your servers that are running Lync Server must run the Lync Server 2010 version.

All database servers must be running the 64-bit edition of one of the following:  Microsoft SQL Server 2008 with Service Pack 1 (SP1) (required) or latest service pack (recommended)

Microsoft SQL Server 2008 R2

http://technet.microsoft.com/en-us/library/gg670905.aspx

Call Forward settings
Edit my delegate members
Clicking add, and then adding the people you want (you can not add federated users as delegates)

Now the interesting piece is that Lync delegation can leverage Exchange delegates.  So this means Lync 2010 can leverage your existing delegation settings from either Inbox and or Calander settings.

Now the issue I ran into before was a user asked me a few questions:

Question: How did the delegates for Lync just appear there?
Answer: If a end user has users delegated in Outlook in either their Inbox or Calender then those delegates are going to appear in Lync automatically.

Question: Does that mean that the people in my Lync delegate will recieve my phone calls on my behalf?
Answer:  Not necessarily, you will have to go into Lync (see above) and select a user with a check box?

Question: So why is it that when I go to try to remove some people from my Lync delegation area that just keep coming back?
Answer: Well, in Outlook you can give people different levels of access.  For those users that you give ”Editor” permissions in your calender, you are giving those users the ability to schedule meetings on your behalf.  So just because you remove them from Lync as a delegate they are going to reappear.

Question:  How do I get those users in my Lync delegation to not come back?
Answer: By editing those users permissions in your Oulook calender from Editor to Reviewer you should be able to remove them from Lync (see above) and those users will not reappear anymore.

Hopefully this is helpful information going forward.

Microsoft Lync 2010 Voice Deployment -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492173&Culture=en-US

Deep Dive: Lync Server 2010 Conferencing -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492176&Culture=en-US

Microsoft Lync 2010 High Availability and Resiliency -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492171&Culture=en-US

Deep Dive: Lync Server 2010 Edge Servers -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492168&Culture=en-US

Lync Server 2010 Migration and Coexistence -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032486209&Culture=en-US

Lync Server 2010 Architecture Topologies -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032488520&Culture=en-US

Lync Server 2010 Role Based Access Control -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=10324862111&Culture=en-US

Lync Server 2010 Implementing Call Admission Control -

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032486214&Culture=en-US

Subject: TechNet Webcast: Microsoft Lync 2010 High Availability and Resiliency

Start Time:

Question: What is a Registrar Pool? it is not one of the Lync server roles, so what exactly is a Registrar?

Answer: When the Lync client signs in, it will register with the Front End Server or Director. The Director is running the registrar service just like the Front End Server.

Question: any known issues around draining/ I tried and it disconnected my current sessions

Answer: I have not seen issues where turning on draining caused current sessions to be disconnected. That is contrary to what the feature is supposed to do.

Question: So the HLB will round robin through the 3 front ends and the Front Ends will then talk to each to figure out what the primary registrar is for a client..correct? If so..what happens if the the primary registrar goes down..will a new registrar be chosen for the client?

Answer: In a resiliency configuration, the user is assigned a backup registrar pool when they register with their primary registrar.

Question: Does Lync support SIP DNS load balancing with SRV records, instead of multiple A records?

Answer: No, you need to have multiple A records.

Question: in dns lb why aren’t cnames used for ocspool1 hosts?

Answer: You are technically creating an A record for each server in the pool that happens to have the same name as the pool. The CNAME record points to an A record so you have to have the A record first.

Question: What are the latency requirements between the DC to DC failover options and SBA to DC failover scenario?

Answer: There are not any specific “latency” requirements for failover to another DC or from SBA to DC.  As a right provisioning standard, provision your network to ensure a maximum end-to-end delay (latency) of 150 milliseconds (ms) under peak load.

Question: the a records are created by building the front end servers so a records for these IPs are already created so then when you configure your pool and dns lb you can create cnames for the pool to the server names…. this way if the server IP changes the pool still stays alive. right?

Answer: The Pool needs to have an A record to function.

Question: When we need to use a Director?

Answer: The Director is not required, but recommended depending on your configuration.

Question: So Full services are available for remote user who’s home server (SBA/SBS) is down,,what about if user is homed to another pool? Do they have limited functions?

Answer: Provided the resiliency is configured correctly for all pools, then they would have full functionality.

Subject: TechNet Webcast: Microsoft Lync 2010 Voice Deployment (Level 300

Question: Does Lync 2010 offer a small business solution for companies as small as 5 users? What would be the initial cost and the cost per user per month for a small business for all the equipment, and services including unlimited nationwide long distance?

Answer: No, Lync 2010 is not offered in small business solution.

Question: Our business wants to know how many voicemails are in a user’s mailbox (not-listened-to and listened-to). Do you have any reports like this?

Answer: Exchange 2010 Unified Messaging has reporting tool that allows you to gather data as Call Statistics and User Call logs, you can find more information about the tool here http://technet.microsoft.com/en-us/library/ff630914.aspx

Question: You would also want to not colocate if the SIP gateway you use can only listen on 5061,,,collocating changes the port to 5068

Answer:  Having a SIP Gateway that can only listen on 5061 could be a possible reason not to collocate, however the more common reasons for deciding on collocating the mediation server on the front end pool are if you are using Media bypass or not; because not leveraging media bypass means the mediation server is transcoding traffic which uses CPU resources.  In addition rather I’m doing direct SIP or SIP trunking or not will have an effect if I collocate the mediation server or not. 

Question: What tpe of Equipment works with Lync? I keep hearing about Audiocodes and Dialogic. are these the only ones.

Answer:  You can find a listing of supported equipment at the site referenced here http://technet.microsoft.com/en-us/lync/gg131938

Questions and Answers Log:

TechNet Webcast: Deep Dive: Lync Server 2010 Conferencing

Question: Why did you not use Lync Conferencing for today’s conference to demonstrate how easy it is to use?

Answer: We will eventually switch over, but to minimize impact on customers, we chose to continue to use the existing Live Meeting infrastructure that was put into place for these types of large scale webcasts.

Question: I have switched to Windows 7 Phones can i attend a Lync conference on my Windows Phone 7 I have not been able to do Live Meeting with Windows Phone 7?

Answer: The Lync Client for WP7 is not currently available so it is hard to speculate as to whether this feature will be supported at relase. I’m sure it is being considered, but am only speculating at this point.

Question: I apologize but I am unable to use print to PDF on slides – will it be comfortable to share the slide in pdf format via handouts?

Answer: I will post the slide decks sometime next week so keep an eye out on my blog – blogs.technet.com/haroldwong.

Question: Are all the Lync conferencing features being discussed available in Lync Conferencing available on Office 365 or are some features only available with on premise Lync?

Answer: Not all features in Lync Conferencing when deployed on-premise is available in Office 365. I don’t have the list of what those are though.

Question: Can you comment a little more concerning the SQL cluster restrictions?

Answer: I am not able to hear what Bryon is saying, but the specific TechNet article for configuring SQL for Lync 2010 is here: http://technet.microsoft.com/en-us/library/gg425848.aspx. The key is to make sure the SQL cluster is configured before you install the Lync Front End component.

Question: If the guest client invited to the meeting has Lync but they are not part of my domain do the external guests still use their foreign lync client or do they join with the web app?

Answer: Either one can be used.

Question: does the “show the link to user to join meeting using Legacy client” security option, allow a attendee use the live meeting client to join a Lync conference?

Answer: No, it does not. That is for Communicator clients.

Question: Are Lync Conferences integrated into Outlookso i can schedule or meet now directly from outlook? Does it use the old Live Meeting Outlook add-in or is it a different addin?

Answer: there is a Lync Add-in that gets installed when you install the Lync client.

Question: if you have a seperate A/V pool, does the web conf components still get hosted on the Front End servers.

Answer: yes.

Question: Any advantage or points to consider for enabling/not enabling show legacy client or show attendee link?

Answer: If you are hosting meetings that include external attendees who may not have Lync, I think it is a good idea to at least point the user to download the Lync Attendee Client. I don’t know about “official” advantages or points for consideration. I will check with Byron for his thoughts and post on my blog later.

Question: If a Lync server homed user creates a meeting with Livemeeting client and sends the invite to external users. Will the users join the meeting through the R2 Edge server (assuming it is still avaialbe)

Answer: If a user is hosted on a Lync server, they will not be creating meetings with the Live Meeting conference so I’m not understanding your question here.

Question: Where is the alias defined in the short url? Does it pull from AD? Is this adjustable? can you turn off the simple url?

Answer:

Question: during migration, we will have users on a Lync server but still running Communicator and Live meeting. during that stage, before we depoy the lync client, will the external access still work via the R2 edge for the users that have been moved to Lync, but not yet running the Lync client.

Answer: You can connect using Communicator, but Live Meeting will not connect to a meeting hosted on Lync.

http://www.powergui.org/servlet/KbServlet/download/3091-102-5259/LyncServer2010PowerShell.pdf

Here is a small example of the PDF link above.

https://www106.livemeeting.com/cc/mseventsbmo/view?id=1032492168&role=attend&pw=68810178

This week I will be doing another technet webcast on High – Availability with Lync 2010.

The following are the links to the webcast…

Deep Dive: Lync Server 2010 Conferencing

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492176&Culture=en-US

 Microsoft Lync 2010 Voice Deployment

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492173&Culture=en-US

Microsoft Lync 2010 High Availability and Resiliency

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492171&Culture=en-US

Deep Dive: Lync Server 2010 Edge Servers

https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032492168&Culture=en-US

Well with Lync server that information isnt readily available as easy.  Now through cmdlets we have to retrieve that information.  The example below shows the cmdlet that is applied to retrieve that information.

Hope you enjoy and are now enable to see how many users have been enabled for Lync.

Byron Spurlock