On Thu, 23 Jul 2015 23:51:33 +0200 Martin Blumenstingl <martin.blumensti...@googlemail.com> wrote:
> Hi Andre, > > On Thu, Jul 23, 2015 at 11:32 PM, Andre Heider <a.hei...@gmail.com> wrote: > > The dsl line never syncs, and letting 'vdsl_cpe_control --c' just sit > > there spits out repeatedly: > > 'DSL_CPE: Wrong combination of DSL PHY Firmware and hybrid type used! > > Please change one of it.'. > At some point during my tests I got a second device (an Arcadyan > VGV7510KW22 - which came as "Annex B" device from the factory). Using > the very same config made this device sync fine. > > > This sounds like an annex incompability? Was I wrong and there is a > > hardware difference and I cannot use the non B model with annex b? > Indeed, I have read multiple times that the DSL modem should support > all annexes - but as our tests have shown: it doesn't (at least for > ADSL). My guess is that the modem physically supports it but there's a > bootstrap pin (to which a resistor is soldered... or not) which > configures it to be Annex A *or* B only. > The interesting part: VDSL is not affected by this (all ISPs in all > countries seem to use VDSL over ISDN). I am using an Annex A device on > a German VDSL line and this is working fine. > > bottom line: it seems that the modems are bound to a specific annex > for ADSL operation. I've seen the same. With annex b device, same firmware, the modem syncs to adsl, with annex a not. vdsl is working unrelated to the annex (B on A and vice versa is working). If someone would like to search for differences on the pcb, I can make photos of both pcbs. best, lynxis -- Alexander Couzens mail: lyn...@fe80.eu jabber: lyn...@jabber.ccc.de mobile: +4915123277221
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