Doesn't VDSL have an initial mode, like mixed mode, until all the lines are VDSL and then they can change it to VDSL only mode which is supposedly slightly faster?
> On 2017/Sep/14, at 3:56 PM, David Lochrin <[email protected]> wrote: > > On Thursday 14 September 2017 at 15:03 Jim Birch wrote: > >> This [POTS continuing to operate] would be an almost mandatory feature to >> decrease the irate customer and/or horror headline risk where there is an >> issue with some component of the FTTN system. Granny death on NBN phone >> failure anyone? >> >> My FTTN line cutover had the same service continuity, but that's on a >> separate channel. > > My guess is that FTTN nodes multiplex the POTS and VDSL2 signals onto the > copper by default, just as is done now with POTS & ADSL, but the POTS signal > is jumpered out unless a customer specifically asks for "voiceband > continuity". > > The POTS signal would then occupy the bottom 100Hz to 4KHz, and VDSL from > 25KHz to 25MHz (?). > > My friend had a POTS service configured with dual numbers and ring cadences, > one of which was detected by her FAX machine. This option isn't available > now, but it enabled a user to have separate 'phone & FAX numbers with a > single line rental charge (and of course only one at a time could operate). > Perhaps she was given voiceband-continuity as a replacement? > > You can see Telstra will get a nice windfall selling off all that exchange > real estate after the MTM complaints fade away and everyone is kicked off > POTS onto VoIP. > > David L. > _______________________________________________ > Link mailing list > [email protected] > http://mailman.anu.edu.au/mailman/listinfo/link -- Kim Holburn IT Network & Security Consultant T: +61 2 61402408 M: +61 404072753 mailto:[email protected] aim://kimholburn skype://kholburn - PGP Public Key on request _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
