We have recently gone from SnomOne 4.5 to version 5 of the Vodia PBX. The upgrade largely went well, however, when we had more than 60 handsets connect with the TCP protocol, some handsets couldn't register with the PBX anymore. We have worked around the problem by having handsets 61- 68 running with a UDP protocol connection, but this isn't a solution I want to persist with.
We are running Server 2012 Hyper-v VM on a Server 2012 standard (not R2) host. The handsets are Snom 300.
Clearly we are hitting a limit either within the PBX or a TCP limit somewhere. Can someone please advise us on which parameters we should look to change to allow all our handsets to connect with a TCP connection string? What log files should I be checking to resolve this?