Peter2  Ally Member

You should give the zycel a IP adress of the fritzbox net may be easier to do with DHCP broadband / WAN Routing IP OE Adresses and DNS automatic connect via WAN Port

But which device is in front ? A modem or a Router sucessfully connected to the Internet ?

There is always a risk of sip Port errors when you use VoIP twice and parallel with a device behind a Router . The best way with Fritz box is to make the sip login for all Numbers with the fritzbox in front and these special ones define as Lan IP telephones . Then you connect with the extern device to the fritzbox like to…

Ok, this is not nice for the german users with german version . But it is no Problem to use the "C" Version with german Telekom based VDSL . Look into the specs of VDSL Vectoring - it includes both Annex A and Annex B tables ! I use it in germany like this . It could only be a Problem with classical DSL, but it is possible…

If the separation with interface grouping is not enough for you and and Vlan only works if the devices are configured for Vlan too you can you use a managed switch that separates Vlan segments for your Net physically over the Lan ports like a Netgear GS305E Managed Switch . I dont think that you really get 10 Gbit behind…

https://www.zyxel.com/global/en/support/download?model=DX3301-T0 I use this site because the regular support site has a kind of bug and does not list the firmware only other things . A small difference between "DX3301-T0" vs. "dx3301-t0" makes it out … There is a new firmware from Nov 29 5.50(ABVY.5.4)C0 and i just…

If it is VDSL then it is connected to VDSL plug of the Zycel . This would not be "fibre" . But the new Router has VDSL Modem capacity too , so plug the VDSL copper wire into the new Router . Leave the functioning ISP Router better as it is …

I think when your ISP Router is connected over its WAN Port to the fiber modem , you only have to plug it out and into the combined LAN/WAN Port of your new Router and then configure .

Yes, there is a fault on the regular site since some weeks ! This link is ok : https://www.zyxel.com/global/en/support/download?model=DX3301-T0

I think you can override DHCP and give a IP adress coupled on the MAC Adress of the IP tel . "static DHCP"

So configure this IP phone with a fix local adress of your local net in the IP tel and in the Router . If it has an Adress you van configure it . When Problems try with deactivated sip.ALG in the NAT section . May be neccesary using other ports then the common Voip ports if you use paralel build in phone and IP phone .

Hi, i think you should activate the logs for VoIP first . Shure there is a option for echo cancellation . May be you use a dect Telephone with its base on the analog Port ? This can result in echoes too some dect Tels have a special option against it .

1und1 often uses ds-lite for new accounts , then you dont have a real IPv4 Adress only one over CGNAT . Try IP V6 only if you obtain a IP V6 adress single. Try a Fritz box which ds lite capable if you have ds-lite . This device must be configured for ds-lite if thats true if it is even capable. You are here in the home…

You should post a picture of the menu Network/setting/broadband to configure There you configure "VDSL over PTM" - deactivate over ATM "Routing " "PPPOE" activate Vlan p=0 q=7 MTU 1492 In PPOE you have to put in PPP username like this 1und1/+++++++@online.de get your adresses automatic The device is old , but seems to be…