RE: 2 Wire T1 - HDLC

["Martin, Christian" <cmartin () gnilink net>]

John, 

I believe you are referring to HDSL2, which can and does run over
single-pair but uses advanced spectral shaping and error correcting
mechanisms that weren't invented when HDSL was dreamed up by Bellcore.

./chris

> -----Original Message-----
> From: John A. Tamplin [mailto:jat () liveonthenet com]
> Sent: Monday, May 14, 2001 7:13 PM
> To: Hunter Pine
> Cc: mike harrison; nanog () nanog org
> Subject: Re: 2 Wire T1 - HDLC
>
>
>
> On Mon, 14 May 2001, Hunter Pine wrote:
>
> > That was my mistake Mike. HDSL is NOT two SDSL lines by 
> definition. It's
> > just two circuits running symmetric 768k DSL (not SDSL) 
> bonded to form a
> > single1.5mb line.
>
> Umm, no.  HDSL rides a single pair, and provides more than 1.5Mb.
>
> John A. Tamplin                                       jat () jaet org
> 770/436-5387 HOME                             4116 Manson Ave
> 770/431-9459 FAX                              Smyrna, GA  30082-3723