Date   : Wed, 24 Mar 2010 18:46:36 +0000
From   : pete@... (Pete Turnbull)
Subject: [OT] ADSL capabilities

On 24/03/2010 01:06, Rick Murray wrote:
> On 23/03/2010 13:10, Jules Richardson wrote:
> 
>> Yes, I could use one of those - but also to use with the US system,
>  > and I don't know how similar that is in terms of tones, line voltages
>  > etc.
> 
> I think "Ma Bell's" tones are all different to the CCITT ones. 

Ma Bell used different /modem/ tones to us lot, and trunk signals were 
originally not standardised, but DTMF is the same everywhere.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York