For the security, the SV9300 and the IP phones DT800 are in difference VLAN. There is a firewall between them. We can ping SV9300 from IP phone network but IP phones cannot register to SIP server. The error shows that "SIP Server not found".
So, which ports must we open on firewall?
5080 - default port for DT series
10000- 10256 for RTP packets?
So, which ports must we open on firewall?
5080 - default port for DT series
10000- 10256 for RTP packets?