I have the same issue. This stopped working about 3 months ago. I can't seem to reach any of the beta clients and they can't seem to be able to call into any of my codecs that are behind VCSe and VCSc.
I was able to resolve my issue: the problem was the domain portion of the 5 SRV records did not match the domain A record of the target host.
Once this was resolved, calling works both ways with no issues.
Rahul - Thanks for the information. But can you ellaborate on this a little more. Is this a change on our codec configurations, our serv records, or VCS configuration?
Also I have no problem getting calls from the outside from other systems but they are probably connecting to me via h.323 and not SIP.
Christian - This was a fresh intall, so the person who did the DNS portion may not have followed the deployment guide of the VCS-es to the letter. So when I did an nslookup, set type=all, etc etc and looked up all six services, viz., h323ls/rs/cs and sip udp/tcp/sips had a record that looked like this:
but the target A record was vcse.video.example.com
They also expressed inability to edit the SRVs, so the workaround was to change all DNS entries across the board. VCSc, VCSe (DNS setup, transforms, regexes), TMS, TCS, codecs -- in short anything that used video.example.com was changed.
Once this was done, everything started working. Hope that helps.