Hi Boris Am 10.05.2020 um 21:25 schrieb Boris: ...
> > Hej Erich, > > this is what makes me crazy about my lack of understanding VoIP! > I have a CISCO SPA112 in my own home LAN working perfect _without any > additional rule or forwarding_. What is the TCPIP-side difference > between the Fritzbox and the SPA112 ?? > OK, there might be server-side differences, because the one we are > talking about ist from Telekom and my SPA112 connects to TNG. From the little I learnt about SIP is that there are different mechanisms of NAT traversal. Also knowing that the installation works fine with an old LEAF release makes me think about iptables. I found the following on the net in the past, the SIP helper(s) were called ip_conntrack_sip ip_nat_sip the current names appear to be nf_conntrack_sip nf_nat_sip in my current release I tried to install them using modprobe (be aware, the modules must be loaded/unloaded using mount_modules/umount_modules. trying modprobe ip_conntrack_sip ip_nat_sip loaded nothing !!! whereas modprobe nf_conntrack_sip nf_nat_sip installed the helper modules. So your big jump from 3.x.x to 6.x.x may well cause this. Check your /etc/modules file. cheers ET
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