Peter2  Ally Member

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…

You want to login to the UI for firmware upgrade via internal ftp of the device ?

Of course this is your decision … One thing at last - may be its better to give the new interface on Lan4 really a adress in your primary lan like 192.168.1.252 and the modem adress change to 192.168.100.1 which is a standard bridge modem adress very often . Then connect the modem Lanport to Wan port of the router and the…

You can test it with a laptop connected to the running Modem on another Lan Port if it works both : access with the same adress of the Modem oder access over Lan4 with your new interface . Then you have to configure your synology right to get access over your Network .

I think if a bridge modem is working on his adress yours is 192.168.1.253 it is not possible to reach it in the same time via a Laptop connected to another Lan port of the device ? But over WLan it is possible . So now the bridge modem offers a new adress 192.168.5.1 to login to the Web GUI on Lan4 . You have to configure…

So its true , you can reach the web GUI of the Modem via Lan4 and 192.168.5.1 . You can make it easier to access with a Laptop when you activate DHCP for your x.x.5.1 Network of the new Interface group you called "Management GUI" . You could add the wifi of the Zycel to this new interface too. To reach it via Lan4…

If you are really interested in you can put a Laptop direct over Lan4 to the zycel to see if it is connecting … If this is ok try allow a Routing form your local net to the Zycel with the different IP x.x.5.x then x.x.1.x . I have two Interface groups and two nets x.x.1.x and x.x.2.x with my Zycel Router and can reach them…

So what happens if you put in 192.168.5.1 in your browser ? You should get the gui of the Zycel device …

The idea ist to create a second interface group in the zycel . Name it "Management" or so bind it to Lan4 and to WWan as pseudo interface . Then give a single free IP Adress of your Net without DHCP or so and connect with a second Ethernet cable to your Net . Then you can reach it as a normal device in your net . Thats all…

This link works for the download of the newest firmware for the EMG5523-T50B too , if you look into the documentation pdf … https://download.zyxel.com/VMG3625-T50B/firmware/VMG3625-T50B_5.50(ABPM.9.2)C0.zip Its for all this devices : VMG8623-T50B EMG5523-T50B VMG3625-T50B/T50C EMG3525-T50B/T50C

You have to make a factory reset to rebuild the initial password printed on the back : like this : https://www.youtube.com/watch?v=fFtNi7lEOt8

According to this site the last firmware for EMG5523-T50B is Version 5.50(ABPM.9.2)C0* The * is the info "* Please contact your Zyxel sales representative or support team for the file. "

When you use the build-in VoIP you dont need to configure forwarding the ports in the Zycel Router . But if its behind another Router its has to be opened there . But your Problem is you have three Vlans - the ISP Router can manage and separate all three Vlans directly and separate the VoIP Vlan intern and leads it to its…