If you are having issues using FreePBX please make sure our IP Addresses have been included in the FreePBX Firewall.
1. In the top menu go 
Connectivity -> Firewall. Click on the 
Networks tab.
2. Input the following details into the corresponding fields. You can find the full list of Crazytel's IP Address in the 
Getting Started Guide in the portal. These may change from time to time, so please check back regularly.
 - IP or Hostname: input the Crazytel IP Address
 - Assigned Zone: Trusted (Exclude from Firewall)
 - Description: short description to identify the IP Address

3. Press the green 
+ (Add New) button to add another IP Address. Continue to add the Crazytel IP Addresses until they have all been added. 
4. Click the 
Save button on the bottom right-hand side of the page.