[GreenKeys] data speed tape reader? is it data phone too?

COURYHOUSE at aol.com COURYHOUSE at aol.com
Tue Dec 13 11:42:36 EST 2016


Jim  at  SMECC  we have  a 202 that  looks like  the 103...  sort of an 
elongated gray phone. We are in need of a  103  so we can run at  110 and 300 
baud. 
 
 On the Dataspeed  .. We have  a Mtn. Bell Service manual -  "Dataspeed 
printer and magnetic tape terminal"
which refers to bell system practices section 578-300-200 issue 3 - march  
1973 for some tech stuff,,,    and  578-300-110 issue 3 - march  1973 for a 
general disc. for the  magnetic tape transport.... Perhaps  this  tape  
system is a replacement  for the   punched  tape  system?  It seems to send and 
rcv...  It also  has 2  versions  one  for  use  with  33/35/37 and  one  to 
work with CDT.

I imagine there are  whole sets of practices that  embrace this  thing 
maybe moreso than this  book..
Since it has  Dataspeed  ink printer it  gave me a look at  the innards of 
that.
 
Ed#  _www.smecc.org_ (http://www.smecc.org)  
 
 
 
In a message dated 12/13/2016 9:08:58 A.M. US Mountain Standard Time,  
jhhaynes at earthlink.net writes:

First of  all, there was a family of DataPhone data sets and auxiliaries
which looked  like telephones having a dial and a handset, but were gray
and had  pushbuttons above the dial.  I'm gonna leave it to you to look
for  pictures of same.  AT&T put out some booklets called  Technical
References for the whole family of these.  There was the 103  series
that was interoperable with the 101 series, but were small  desktop
things.  The 200-series were higher speed things - 202 up to  1200 baud
as I recall, and 201 up to 2400 baud synchronous.  There was  a 300
series that was for up to 56K baud I think, and the 400 series  included
things for TouchTone signals and perhaps for a fax modem as well  as the
ones used for Type 5 Dataspeed.  Dataspeed was an AT&T  word, so Teletype
called it Telespeed if sold for the non-AT&T  market.

The transmitter data set for Type 5 was quite small, all  contained within
the telephone-like housing, since there was nearly nothing  to the circuit
except a pair of transistors and nine sets of  resonators.  The receiver
data set was large, in a cabinet maybe  15"x10"x10"  and required what
was called an 804 Data Auxiliary Set,  which was really just a telephone
styled like the other modems of the  family.  There was also an autodialer
that could be used with these  modems, but came in a separate box full
of relays.

I left Teletype  in 1966 and I think the Type 5 Dataspeed was just going
into production  then.  The transmitter design was essentially finished
earlier, but  the receiver with DRPE and a new DRPE driver circuit took
more  time.

I don't recall if the Inktronic printer carried the Dataspeed  name in
AT&T  service.
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