Hello to everyone. Recently started working in one company where (one part of employers) have problem with making internal and external calls. They can get calls from outside, but they can not make at all. I saw that these numbers are also not supported, but upgrading to a new firmware doesn't work. I thought that maybe, as these users are in separate building, there is a problem with router or firewall, but it seems to me that is well configured.
I don't have much knowledge about this app, so I would appreciate your help.
I don't have much knowledge about this app, so I would appreciate your help.
