We have one mitel 3300, single site.
I am trying a softphone for the first time, in this case microsip using my pc to test. The mitel and phones are on a different voice vlan to computers.
When I call a mitel ip phone from microsip both of which are connected to the same physical switch, I cannot hear the phone that I dialed but they can hear me fine.
If they don't answer and it goes to voicemail I hear the greeting and can record a message no problem.
If I make an external call to the same phone from microsip the sound is fine, as are calls to all other external numbers.
So seems like the problem is microsip to ip phone call . Given that there is no firewall involved as on the same physical, what could it be? Codec or network issue of somesort?
Any troubleshooting suggestions?