Fibre and VOIP with e-on

Good day,

I have a question about the combination of VOIP and fiber.

My setup is ONT ↔ IPFire ↔ FritzBox 7490 as a telephone system.

The provider is e-on.
Internet connection runs via DHCP, the red interface is set to “bridged” with VLAN 132. I can’t use PPPoE because I don’t have any credentials.
The internet connection works.

My Problem is VOIP: Unfortunately, the phone numbers cannot be registered.
According to the instructions from e-on, the following data must be entered into the Fritz box at “Eigene Rufnummern”:

  • SIP phone number
  • SIP password
  • registrar
  • Proxy server

The following settings must be made:

  • DMTF transmission must be selected as “RTP or Inband”
    • “only via IPV4”
  • VLAN Tag 232
  • PBit 0
  • without credentials
  • IP address via DHCP.

I installed IGMPProxy on the IPFire. My settings in /etc/igmpproxy.conf are:

## Configuration for red0 (Upstream Interface)
##------------------------------------------------------
phyint red0 upstream  ratelimit 0  threshold 1
      altnet 192.168.10.0/24;
      altnet 212.42.224.0/24;
      altnet 169.254.12.0/24;
      altnet 169.254.231.0/24;

##------------------------------------------------------
## Configuration for green0 (Downstream Interface)
##------------------------------------------------------
phyint green0 downstream  ratelimit 0  threshold 1
      altnet 192.168.10.143/32;

Can someone help me?

Thank you.

Marcus Purper