System Preparation

Before configuring the SIP trunk it is required to go through the following checklist and make changes where necessary:

• NAT (when used) created to 3CX
  (https://www.3cx.com/docs/ports/)
• Firewall Checker passed
  (https://www.3cx.com/docs/troubleshooting-firewall-checker/)
• Firewall SIP ALG checked and if present disabled
  (https://www.3cx.com/docs/manual/firewall-router-configuration/)

Further setup information can be found in our Academy: 3CX Academy Basic Course

3CX Version

Some providers gained support and compatibility with 3CX on a specific product version. It is advisable to always run the latest version of 3CX to ensure ongoing compatibility.

Minimum 3CX Version: 3CX v16 SP8

Provider Capabilities

Below is a short overview of the provider’s capabilities and services and whether they’re supported or not:

• CLNS (Clip No Screening): No  
• Catch All Routing: Yes
• Fax T.38 support: No (Audio only)
• CLIR (Number Suppression): Yes
• DTMF via RFC 2833: Yes
• Codec Order: G711U,G711A, G729
• NAT Support: Yes

Configuring the Trunk with 3CX

The general instructions outlining how to add a new SIP Trunk to your 3CX installation can be found here.

Adding the Trunk

Go to “SIP Trunks” and select “Add SIP Trunk”

• Select Country: NL
• Select Provider in your Country: Destiny Flux
• Main trunk number: This will have been provided to you by Destiny Flux. You must enter the number in the international number format (e.g. 3123456789)
• Press “OK”

Under the “Authentication” section your Authentication ID and Password (these will be supplied to you by Destiny Flux).

Once you have filled in these fields as given to you by Destiny Flux, scroll to the top of the page and press OK. At this point if you refresh the page you should see your Destiny Flux Trunk appear as Registered.

Adding Additional DIDs

To associate all other DIDs/Numbers you have in your Destiny Flux account with 3CX, go to the Management Console → SIP Trunks, double-click on your Destiny Flux Trunk and go to the “DIDs” tab.

Here you should already see 1 entry; that is the Main Trunk number you have set. Add all other DIDs/Numbers you have to the list in the international number format (e.g. 3123456789) and press “OK”.

Creating Inbound Rules

Now that you have associated all your DIDs/Numbers with your SIP Trunk in 3CX, you can create Inbound Rules to set where calls will be routed when those numbers are called. Instructions on how to create Inbound Rules can be found here.

Number Format

General

When configuring Destiny Flux SIP Trunks in 3CX, all numbers should be entered in the international number format (e.g. 3123456789), otherwise call routing will fail.

Outbound Caller ID

Destiny Flux Trunks do not support Clip No Screening which means you can only present numbers associated with your account as Outbound Caller ID.

Outbound Rules

When configuring your Outbound Rules, numbers can be dialed in all valid number formats. More information about how to create Outbound Rules and how they work can be found here.

Multiple Account Support

The default setup of the template included in the management console does not allow for multiple accounts of the same provider. If multiple accounts of the same provider are needed then read the following guide and make the necessary adjustments depending on your type of trunk.