i need for testing: disable ADSL2+ mode and fallback to ADSL (old) mode, is possible?

[vpe]

i need for testing: disable ADSL2+ mode and fallback to ADSL (old) mode, is possible?

 

[Novize]

No, that's not possible. For your tests you need an old external ADSL-Modem.
(maybe you can try a very old firmware (only old fritzbox, not 7170), but than it's possible, to crash the fritzbox. )

 

[vpe]

And any internal switch for dsl driver by AVM is not possible?

I need compare line params ADSL2+ vs. ADSL, but no other modem have this pretty graphical output.

Maybe any frequency limiter up to 1.1 KHz to line not work?

I have very low UP speed (500 Kbps, 22 dB) line capacity with , download capacity is about 16000 Kbps (16 dB).

But second same line on same telco site /about 900m wire/ in ADSL(old) mode have 900 Kbps line capacity.

Or only switch by DSLAM :-(

I have old only USB Siemens modem, and not sure about testing line parameters.