Folgende Verbindungen müssen seitens der Firewall erlaubt sein (Basisinstallation):
| Typ | Protokoll | IP | Port | Direction |
|---|---|---|---|---|
| DNS | UDP | - | 53 | outbound |
| NTP | UDP | - | 123 | outbound |
| SIP | TCP/UDP | 176.123.55.10 | 5060 | inbound & outbound |
| SIPS | TCP | 176.123.55.10 | 5061 | inbound & outbound |
| RTP | UDP | 176.123.55.10 | 10.000 - 19.999 (Telematica PBX) 30.000 - 44.999 (SIP Trunk) | inbound & outbound |
| Typ | Sekunden |
|---|---|
| NAT Keep Alive | 300 |
| UDP Session Timer | 300 |