3cx questions with correct answers

Firewall Configuration - Why? - Answer Voice Calls need to pass through the firewall to reach your PBX Voice calls use several ports (SIP for signaling and RTP for audio) Firewall will block traffic by default Need to configure firewall / router to forward calls to PBX Prerequisites for this Module - Answer Fundamental Knowledge of routing required Configurable Firewalls: pfSense Watchguard Sonicwall (req. hotfix) Good knowledge of the Firewall Device Note: 3CX will not configure your Firewall! router-configuration/ More about 3CX Support Procedures: NAT & Ports - Answer Translates Public (IPv4) to Private IP Addresses (NAT/PAT) Allows Access or Restricts it (ACLs) Required to allow connections to 3CX from: Provider(s)