Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

markga — Wed, 28 Sep 2011 04:53:45 GMT

Mark,

You would want to configure Lync to be highly available in the local datacenter to prevent single point of failure. You can also configure Lync to failover to an alternate datacenter using a backup SIP registrar. This would be a recommended approach over an SBA (used mainly for branch offices, etc).

See here for more info: technet.microsoft.com/.../gg398347.aspx

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

Mark McClure — Tue, 27 Sep 2011 20:47:40 GMT

Could this be used for a primary site where the Lync server became unavailable? We have a municipal fire department that is the backup command center in the event of an emergency. They want to use Lync for their Enterprise voice but it would be 12 phones on an average day and perhaps 50 in an emergency situation.

They want to know that the failure of the Lync server would not prevent them from making calls, so I'm curious if an SBA at the primary (or only) site might be a viable option.

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

markga — Fri, 09 Sep 2011 14:11:28 GMT

Andrew,

Response groups would not work during a WAN outage but would work when the WAN is available.

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

Andrew Parker — Fri, 09 Sep 2011 13:13:31 GMT

Thanks for this article, very good. Please tell me, if I put a SBA live, am i am able to take inbound calls on the PSTN and process them through a response group as the default behaviour?

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

markga — Wed, 30 Mar 2011 14:13:10 GMT

Sergey,

IM, Video and web conferencing does not work during resiliency mode. Lync PSTN audio conference bridge continues to work since you are using PSTN lines rather than WAN for dial tone. The number of users in the branch office that can use this depends on the type of PSTN link provisioned.

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

Sergey — Wed, 30 Mar 2011 08:05:59 GMT

How many users can participate in the conference during resiliency mode in the branch office? Or maybe no limits?

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

markga — Fri, 03 Dec 2010 16:38:51 GMT

Chris,

For 25 users or less, you can still deploy an SBA or you could leverage a UC SIP phone which has the ability to insert dual SIP providers such as snom. I have a snom sample phone where I can dual path to Lync and my local VOIP provider.

re: Can you provide more details around whether or not I need to deploy a Survivable Branch Appliance for my Lync deployment?

Chris Doucette — Fri, 03 Dec 2010 14:22:28 GMT

For smaller branches, are you saying there's no affordable way to provide redundancy in the event of internet loss?