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Autor Xan
pa sad, moj njemački nije savršen, al kolko sam ja skužio piše za analogne telefonske priključke ili čiste podatkovne priključke
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Da, malo sam banalizirao
Evo sto sam nasao na forumu gdje se bave modifikacijama Fritza...od jednog "majstora"...post je od 2006, pa je moguce da su se od onda stvari promijenile...
POTS + Annex A DSL => works
ISDN + Annex A DSL => conflict in frequence ranges !
POTS + Annex B DSL => works
ISDN + Annex B DSL => works
The advantage of using only Annex B is having a unique hardware.
Unfortunately "loong" lines with POTS might get a higher transfer rate with Annex A.
The hardware for Fritz "Annex A" and Annex B" is different ! The frequency adapter is different.
It's possible, if the firmware supports, to tell a Fritzbox with Annex B frequency adapter to try an Annex A connection.
But only if the DSL-firmware supports. A 7170 might not.. ( never seen a successful try ).
Also "ADSL2+ Annex B" firmware might not try/support Annex A always and
this might become worse in the future.
For sure the Annex B hardware will have trouble with "bad long Annex A" lines. Also the firmware does not support all kind of possible DSL negotiation of protocols.
AVM just to supports "proper" configuration.