Thanks for the additions!

to put it in different words, the single domain setup requires an additional (internal) domain
for internal devices and mapping via findme/ocs relay. But it works fine

What is the reason that you list:
_sip._tls.company.com srv 0 0 5061 vcs-e.company.com.
_sips._tls.company.com srv 0 0 5061 vcs-e.company.com.

Also
_h323cs._tcp.company.com srv 1 0 1720 vcs-e.company.com.
_sip._udp.company.com srv 0 0 5060 vcs-e.company.com.
are not really “needed” and can be seen as optional.

If you have a vcs-e its even worth thinking about disabling 5060udp completly
as this is way fewer used for video conferening then for voip scans

In addition I would recomed a weight and priority of 10, the A/AAAA record
“should” not only be there it MUST (not even CNAME), as it is required for SRV (see RFC2782)

I’ve never used anything other guides than the official ones, so unfortunately I can’t recommend anything else other than the internet :/

We have a small installation with a VCS Control and a VCS Expressway and the VCS Control is also acting as Lync Gateway.

Can you recommend any good resources about Tandberg and Lync integration – apart from the official deployment guide?

Thanks!

Yes they can.

The domain in the SRV record needs to correspond to the domain used in the SIP/H323 URI though, so if your endpoint has address something@subdomain.company.com your example can be used.

I use this a lot when integrating with other systems, eg. MS Lync. The Lync SIP domain is normally company.com, while the Cisco/Tandberg domain would be video.company.com to ease the routing between the to systems.

i.e.,

_sip._tcp.subdomain.company.com srv 0 0 5060 vcs-e.subdomain.company.com.

TIA!

For clustering, you can either create an SRV record with equal priority and weight and target each of the peers in the cluster, or you can set up the A record to the VCS cluster as a Round robin list of ip addresses.

see more in the cluster creation guide:

http://www.cisco.com/en/US/docs/telepresence/infrastructure/vcs/config_guide/Cisco_VCS_Cluster_Creation_and_Maintenance_Deployment_Guide_X6-1.pdf

Tom