[fa.telecom] TELECOM Digest V4 #191

telecom@ucbvax.ARPA (05/14/85)

From: Jon Solomon (the Moderator) <Telecom-Request@BBNCCA>


TELECOM Digest     Mon, 13 May 85 16:31:08 EDT    Volume 4 : Issue 191

Today's Topics:
                             700-555-4141
         Modem ScrewUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUps
                          UUUUUU from modems
                           Modem confusion!
                           modem confusion?
                                Thanks
----------------------------------------------------------------------

Date: Sun, 12 May 85 01:15:30 edt
From: Micheal A. Grant <mgrant@maryland>
To: telecom@bbncca.ARPA
Subject: 700-555-4141

I tried it both preceded by a 0, 1, and nothing at all.  It rang once,
then a recorded female voice said, "You have reached the AT&T Long 
Distance Network, thankyou for choosing AT&T."  Then silence.  The
message did not repeat.  We do not have Equal Access yet, it's not
expected for some time yet.
-Mike Grant

------------------------------

Date: Sun, 12 May 85 01:26:16 edt
From: Micheal A. Grant <mgrant@maryland>
To: telecom@bbncca.ARPA
Subject: Modem ScrewUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUps
Cc: cak@purdue.ARPA

This is in reply to a modem problem, which mysteryously prints
a whole string of U's, then you're basically wedged.

I know just what your're talking about.  I've had the same damn thing
happen to me using the University of Merryland's computers.  I really
think it's the university's Gandalf box.  When it happens to me,
the modem dosn't hang up, it just sits there and echos back everything
you send it.  Chris, do you know if you use Gandalfs at Purdue? 
-Mike Grant

------------------------------

Date: Sun, 12 May 85 07:54:10 pdt
From: brian@SDCSVAX.ARPA (Brian Kantor)
To: cak@purdue
Subject: UUUUUU from modems
Cc: telecom@bbncca

Get whoever it is you are calling to flip the switch in HIS modem to turn
off the remote diagnostics - the UUUUU you are seeing is a test pattern.

Many modems would accidently drop into the test state from a burst of noise
while connecting or disconnecting.  On many, they first send the test pattern
and then go into loopback mode, which is what it sounds like you're
experiencing.

Usually there is a switch on the modem card to disable this ``feature''.

	Brian Kantor	UC San Diego

	decvax\ 	brian@ucsd.arpa
	akgua  >---  sdcsvax  --- brian
	ucbvax/		Kantor@Nosc 

------------------------------

Date: Sun, 12 May 85 20:18:00 cdt
From: nather%utastro.UTEXAS@ut-sally.ARPA (Ed Nather)
To: telecom@bbncca.ARPA
Subject: Modem confusion!


  >To: telecom@bbncca.ARPA
  >Subject: modem confusion?
  >Date: 09 May 85 20:23:48 EST (Thu)
  >From: Christopher A Kent <cak@Purdue.ARPA>
  >
  >Every once in a while, when dialed up from home, my connection seems to
  >get quite confused. The symptom is that it prints about 20 U
  >characters, then the connections goes into the state where everything I
  >type is echoed, but nothing gets accomplished. The only solution is to
  >hang up and connect again, at which point everything is fine.
  >
  >I can't reproduce it, but it keeps happening. Does this sound familiar
  >to anyone? It seems to be related to one of the modems, but I can't be
  >sure which one.
  >
  >Thanks,
  >chris

I saw the same thing last night -- symptoms exactly as you describe.  I
thought it was the (Vax Unix 4.2bsd) system I was talking to, but I guess
it could be the modems.  Both ends use Ven-Tel 300/1200 baud model MD212.
Very disturbing.  I've seen it maybe 6 times in 3 years.


Ed Nather
Astronony Dept, U of Texas @ Austin
{allegra,ihnp4}!{noao,ut-sally}!utastro!nather

------------------------------

Date: Sun 12 May 85 19:20:18-PDT
From: Doug <Faunt%hplabs.csnet@csnet-relay.arpa>
Subject: Thanks
To: telecom-request@bbncca.ARPA

Thanks to all of you who answered my query about the
telephone wiring information, especially to David G. Cantor
<dgc@ucla-locus>, who recognized the unit from the description I
gave, answered, and mailed me a copy of the diagram.

The ringer has one coil only, with five connections.
The extra three; slate, slate-red, and blue, are used only for
party identification.  

The unit is apparently a K2254, however, this identification is
NOWHERE to be found on the unit.

-------


------------------------------

End of TELECOM Digest
******************************