The hardware support was 2B+D but you could definitely just use a single B.   
56k vs 64k depended on where you where is the world and which style of ISDN the 
telco offered. 


-- 
Mark Andrews

> On 27 Jan 2020, at 22:32, Bryan Holloway <br...@shout.net> wrote:
> 
> I didn't think one could get a single 'B' channel over ISDN ... but I could 
> be mistaken.
> 
> In my early ISP days, ISDN was 2 x 64k (full-rate) 'B' channels and a 16k 'D' 
> channel for signaling.
> 
> 
>> On 1/26/20 5:58 AM, Joly MacFie wrote:
>> IIRC that 64k was in fact 56k with 8k for overhead.
>> I had one, and it would kick in a second channel if you pushed it, for a 
>> whopping 112k. Metered, came out to about $500/mo.
>> Joly
>> On Fri, Jan 24, 2020 at 6:26 PM Ben Cannon <b...@6by7.net 
>> <mailto:b...@6by7.net>> wrote:
>>    I started what became 6x7 with a 64k ISDN line.   And 9600 baud modems…
>>    in ’93 or so.  (I was a child, in Jr High…)
>>    -Ben.
>>    -Ben Cannon
>>    CEO 6x7 Networks & 6x7 Telecom, LLC
>>    b...@6by7.net <mailto:b...@6by7.net>
>>>    On Jan 24, 2020, at 3:21 PM, b...@theworld.com
>>>    <mailto:b...@theworld.com> wrote:
>>> 
>>> 
>>>    On January 24, 2020 at 08:55 aar...@gvtc.com
>>>    <mailto:aar...@gvtc.com> (Aaron Gould) wrote:
>>>>    Thanks Jared, When I reminisce with my boss he reminds me that
>>>>    this telco/ISP here initially started with a 56kbps internet
>>>>    uplink , lol
>>> 
>>>    Point of History:
>>> 
>>>    When we, The World, first began allowing the general public onto the
>>>    internet in October 1989 we actually had a (mildly shared*) T1
>>>    (1.544mbps) UUNET link. So not so bad for the time. Dial-up customers
>>>    shared a handful of 2400bps modems, we still have them.
>>> 
>>>    * It was also fanned out of our office to a handful of Boston-area
>>>    customers who had 56kbps or 9600bps leased lines, not many.
>>> 
>>>    --            -Barry Shein
>>> 
>>>    Software Tool & Die    | b...@theworld.com
>>>    <mailto:b...@theworld.com>             | http://www.TheWorld.com
>>>    <http://www.theworld.com>
>>>    Purveyors to the Trade | Voice: +1 617-STD-WRLD       | 800-THE-WRLD
>>>    The World: Since 1989  | A Public Information Utility | *oo*
>> -- 
>> ---------------------------------------------------------------
>> Joly MacFie 218 565 9365 Skype:punkcast
>> --------------------------------------------------------------
>> -

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