I have an SV8500 with many NEC SIP phones. Recently, I added a bunch of Softphone licenses and installed about 60 SP350 softphones. These softphones seem to work ok, you can make and receive calls that go outside the system, and call between each other too.
However, when you call a hardphone (internal extension, NEC DT700 IP phone), as soon as the hard-phone user answers the call, the hard-phone drops the call and locks up and you can't do absolutely nothing with it. You literally have to unplug it to reboot, at which point it works again.
The phone system is now about 5 years old, and it's on S3 release (about to upgrade to S7). I used to have a SP350 softphone on my desk computer and used it for a year and never had any such problem.
We have many different building and many different floors, and the phones are across many different VLAN-s. There is a firewall between the VLAN-s and I worked with the IT dept many long hours to figure out which ports need to be open between the different VLAN-s so both audio and signalling works but nothing else gets through. And we got it all working at one point. But now there is this problem.
I have some more work to do with them about this problem, and looks like I'll have to re-install my own SP350 on my computer to see if mine now shows the same problem or not.
Either way, if somebody has any input on this, it would be appreciated.
However, when you call a hardphone (internal extension, NEC DT700 IP phone), as soon as the hard-phone user answers the call, the hard-phone drops the call and locks up and you can't do absolutely nothing with it. You literally have to unplug it to reboot, at which point it works again.
The phone system is now about 5 years old, and it's on S3 release (about to upgrade to S7). I used to have a SP350 softphone on my desk computer and used it for a year and never had any such problem.
We have many different building and many different floors, and the phones are across many different VLAN-s. There is a firewall between the VLAN-s and I worked with the IT dept many long hours to figure out which ports need to be open between the different VLAN-s so both audio and signalling works but nothing else gets through. And we got it all working at one point. But now there is this problem.
I have some more work to do with them about this problem, and looks like I'll have to re-install my own SP350 on my computer to see if mine now shows the same problem or not.
Either way, if somebody has any input on this, it would be appreciated.
