Original Reddit post

Hello all, I want to replace my Swisscom’ internet box with a Mikrotik router connected through a GPON bridge Zyxel PM-7300-T0. I did all the configuration that is commonly found on the Internet and I am able to get a 100.x.y.z IP on the WAN interface via DHCP. Normally at that point I should go through the registration process to get my device “approved”. The thing is, I want to be able to swap my Mikrotik router with the original Swisscom box as often as needed without having to go through the registration. I have a few projects in mind and the wife+kids factors call for an easy way to restore everything to a working condition quickly. Now, I have cloned the MAC address of my Internet box but with XGS-PON I think an other criteria comes into play with is the PON serial number, am I correct? It seems that I can change the PON serial of the Zyxel PM-7300 through the command “sys atgs” but unfortunately it returns an error message that says “Access denied”. I believe I need to go low-level access through the serial console port, which exists as documented here: https://hack-gpon.org/xgs/ont-zyxel-pm7300-t0/ Did someone tried it before? Is it actually possible to change the PON seriral number this way? Thank you. submitted by /u/mtest001

Originally posted by u/mtest001 on r/Switzerland