VMG3625-T50B handshakes with Gigabit WAN but not VMG3625-T20A

yannara
Posts: 2
Freshman Member

in Home Router
Both of these routers should have gigabit WAN capability, same location, same cables, T20A still establish WAN connection only with 100mbps but VMG3625-T50B uses full 1000mbps wan speed. Are T20A's tech specs wrong or what could be the cause?
ZyXEL VMG3625-T20A Dual-band ADSL2+/VDSL2 -modeemi – Verkkokauppa.com
ZyXEL VMG3625-T50B Dual-band ADSL2+/VDSL2 -modeemi – Verkkokauppa.com
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