DSL[00]: Reboot on training timeout (60)!!! + AVM 7320

[nuiler]

Bei mir erscheint im Telnetfenster alle 60 Sekunde folgende Ausgabe

DSL[00]: Reboot on training timeout (60)!!!
DSL[00]: Line state has changed: 00000200 -> 00000000
DSL[00]: Line state has changed: 00000000 -> 000000FF
DSL[00]: Line state has changed: 000000FF -> 00000100
DSL[00]: Line state has changed: 00000100 -> 00000100
DSL[00]: Line state has changed: 00000100 -> 00000200

Was bedeutet dies und wie bekomme dies weg?