I have full fibre 150 with a grandstream for VOIP on my landline phone, my landline phones are a Quad set of BT 8610 phones with a Answer Phone on one base unit which is plugged into the Grandstream, the Grandstream is then plugged directly into a eero unit, all worked OK at start but recently when I get a incoming call not all the phones ring sometimes only 2 then at times 3 and on rare occasions all 4 will ring i have swopped the phones over to different base units but it doesn't seem to make any difference, the phones worked perfectly on incoming and outgoing calls before I went onto full fibre.
Jimpy, Staffordshire
