Lync 2010 !Survivable Branch office Appliance! SBA

Branch Office resiliency

Microsoft this time seems to be very promising with this product Lync Server 2010. By introducing Survivable Branch office Appliance (SBA) it is definitely addressing to capture larger Unified Communications Market. As in the name Survivable is ability to survive in the event of failure, here failure in network connection to central site.

SBA is introduced mainly to help branch office users to continue make voice calls in the event of netowrk connection failure to Central Office. Branch office may or may not have Standard edition or Enterprise edition pools, but it is neccessary to have SBA configured to avail this feature.

Hewlett Packard is one of the major provider of SBA hardware, definitely look for it. If you require more info please visit here SBA hardware from HP is a combination of Lync Server 2010 (Registrar+Mediation), PSTN to Voip gateway, GUI for configuring SBA and API for switch.

The HP Survivable Branch Communication zl Module reduces IT infrastructure at remote branch offices and extends the business productivity and reliability of Lync Server 2010. It combines Microsoft Lync Server 2010 and HP ProCurve software within HP ProCurve Switch 8200zl and 5400zl series products. HP provides one shop end to end solution for all your hardware needs of Microsoft Lync 2010 Server, including HP ProCurve networking equpiments. This all combined HP is one of the best option for any enteprise business needs, with HP you will get cost effective and efficient solution.

The main objective of SBA is to provide voice resilency for users in Branch offices. In most of the deployments users accounts are  homed in Central office either in Enterprise or Standard edition pools. If there is any disruption in connectivity to central office then users will loose ability to accept and make calls, SBA helps here.  Installation of SBA does not require extensive configuration and can be done remotely. Because the Survivable Branch Appliance runs at a remote site that may not have IT personnel, it is designed for easy deployment and remote management. Before a Survivable Branch Appliance is deployed, administrators can set up its account and configuration at the central site. A technician at the branch office then begins the deployment, and the rest of the deployment can be finished by the branch office technician, or done remotely by central site administrators, depending on the permissions given to the branch office technician.

Lync Server 2010 Branch Office Appliance hardware includes the following components:

  • A Registrar for user registration and call routing.
  • A Mediation Server for handling signaling between the Registrar and an IP-PSTN gateway
  • An IP-PSTN gateway for routing calls to the PSTN as a fallback transport in the event of WAN failure.
  • SQL Server Express for local user data storage.



In the event a branch office’s WAN connection to a data center fails, the Survivable Branch Appliance provides the following voice features to users in that branch office:

  • PSTN inbound and outbound calls
  • Intra-site and inter-site calls
  • Call hold, retrieve, and transfer
  • User authentication and authorization
  • Leaving and retrieving voicemail
  • Call forwarding, simultaneous ringing, boss-administrator, and team calling
  • Call Detail Records.
  • All Two-party functionality, including instant messaging and audio-video conferencing
  • PSTN dial-in conferencing with Conferencing Auto-Attendant


Required hardware and software is built into the Branch Office Appliance. There are no additional hardware components required at the branch office. Branch Office users must be enabled for Enterprise Voice and provisioned with an appropriate Unified Communications endpoint.

Supported Collocation

SBA itself is a collection of collocated components, so it can not be collocated with any other roles.

6 responses to this post.

  1. Posted by Ambati.VenkataRamana on July 20, 2011 at 12:50 pm

    Good and worth full article



  2. Posted by Ambati.VenkataRamana on July 20, 2011 at 12:51 pm

    Good and worth full article


  3. Your means of telling the whole thing in this piece of writing
    is in fact nice, all can easily be aware of it, Thanks
    a lot.


  4. Posted by Manuel Vallejo on December 27, 2012 at 10:16 pm

    Great! Hareesh


  5. They look excellent! Job well done!


  6. Hi there! I just would like to give an enormous thumbs up for the great info you will have here on this post.
    I can be coming back to your blog for more soon.


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