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"for whatever reason, that didn't work." The problem with conventional telephony is the voice response is very close to immediate. With VOIP, there are small delays in the A to D and D to A converters, which make a conventional conversation much more difficult. Nottingham University had a similar problem when they converted their telephone network to VOIP. For anyone dialling in to an extension, the delays are a serious obstacle to conventional interactive conversations. VOIP may be cheap, but it is also nasty. Ray. >----Original Message---- >From: gordon+dcglug@xxxxxxxxxx >Date: 11/04/2011 15:45 >To: <list@xxxxxxxxxxxxx> >Subj: Re: [LUG] Broadband & phone > >On Mon, 11 Apr 2011, Simon Waters wrote: > >> On 10/04/11 23:00, Kai Hendry wrote: >>> On 10 April 2011 17: 20, Simon Waters <simon@xxxxxxxxxxxxxx> wrote: >>>> avaiable on my exchange, and since the 21CN roll out ceased presumably >>> >>> Ceased? Do you have reference on that? >> >> Not to hand, I gathered the idea when the upgrade date for the exchange >> disappeared and I was trying to find out when/how. > >Isn't this to do with the plan BT had to move their entire phone network >to their 21CN data network? > >That always seemed confusing to me - and from what I understand, they >canned the idea after trying it out with much fanfare on a couple of small >welsh towns... I think the idea was the use VoIP throughout their entire >voice network, but for whatever reason it didn't work... > >So samknows had 2 sets of 21cn target dates for some exchanges at one >point - presumably indicating 21cn data and 21cn voice. Even my rural >exchange had a 21cn target date onceupon a time... > >Gordon > >-- >The Mailing List for the Devon & Cornwall LUG >http://mailman.dclug.org.uk/listinfo/list>FAQ: http://www.dcglug.org.uk/listfaq > -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq