Fonial Integration
Fonial supports FQDN. You can connect your Fonial SIP trunk with Famulor and use your phone numbers with an AI assistant. Follow the step-by-step guide below.
Step 1: Set up in Famulor
- Log in at famulor.de.
- Click on “Your Phone Numbers” and then “Integrate SIP Trunk”.
- Fill out the SIP Trunk Configuration:
- Authentication: Username and password (you get these in Step 2 from your Fonial customer account).
- Outgoing Telephony: SIP server/address and phone number format according to Fonial (E.164 format with “+”).
- Incoming Telephony: Enter the allowed IP addresses of Fonial (see Fonial Fact-Sheet – section “IP Addresses”). Note the displayed “Our SIP Address” – this is needed in Fonial as the FQDN/call destination.
- Confirm the configuration and create an AI assistant, assigning it to the phone number.
The IP addresses of Fonial servers can be found in the Fonial Fact-Sheet (section 12). These must be entered in Famulor under “Incoming Telephony” as allowed IPs so that incoming calls from Fonial reach Famulor.
Step 2: Create SIP User in Fonial
The SIP user is the key element for the setup: you will connect Famulor (or your call destination) with the Fonial trunk using this user’s data. Without a SIP user, phone numbers cannot be assigned. Source: Create SIP User in the Fonial help.- In the Fonial customer account, go to the “SIP Users” menu and click it.

- Click “Create New SIP User” above the table on the right.

- Enter a name for the SIP user (e.g., site name or “Famulor”) in the dialog, then click “Save”.

- The new SIP user appears in the table; the status will initially show as “Offline” until the SIP data is entered in the peer (e.g., Famulor/FQDN).

- Open the SIP user details via the user/gear icon to view the username, password, and server URL. Enter this information in Famulor under the SIP trunk configuration (authentication and, if applicable, outgoing telephony).

Step 3: Assign Phone Numbers in Fonial
Phone numbers must be assigned to the created SIP user so that calls to these numbers are routed to your configured call destination (Famulor). Source: Assign Phone Numbers in the Fonial help.- In your customer account, go to “Phone Numbers”, select the desired number(s) by checking the box, then click “Assign SIP User” (or “Remove SIP User Assignment” if you want to change an assignment).

- Select the SIP user (e.g., the one created in Step 2) from the dropdown and click “Save”.

- After correctly configuring the peer (Famulor with FQDN/call destination and SIP data), the SIP user’s status changes to “Online”.

Step 4: Enter FQDN / Call Destination in Fonial
Enter the Famulor SIP address as the call destination (FQDN) in Fonial, which you find in Famulor under “Phone Numbers → Integrate SIP Trunk → Incoming Telephony” as “Our SIP Address”. Omit the prefixsip:, enter only the domain (e.g., your-id.sip.livekit.cloud).
Where exactly you enter the FQDN in your Fonial customer account depends on the current interface – if you have questions, please contact Fonial Support or use the Fonial Trunking Help.
Important Notes (Based on the Fonial Fact-Sheet)
- Phone number format: Fonial uses E.164 (international format with ”+”, e.g., +49 221 66966966). Use E.164 format accordingly in Famulor and your configuration.
- OPTIONS packets: The peer (Famulor) must respond to OPTIONS requests from Fonial with 200 OK; otherwise, the system is considered offline, and calls will not be passed through.
- Audio codecs: G.711, G.711a, G.711μ; Fonial recommends G.722. DTMF according to RFC 2833.

