Resent-Message-Id: <8705261529.AB17576@bu-cs.BU.EDU>
Message-Id: <8705240509.AA01713@buita.bu.edu>
Date: Sun, 24 May 87  1:09:31 EDT
From: The Moderator (JSol) <TELECOM-REQUEST@buit1.bu.EDU>
Reply-To: TELECOM@buit1.bu.EDU
Subject: TELECOM Digest V7 #3
To: TELECOM@buit1.bu.EDU
Resent-Date: Tue, 26 May 87 11:17:16 EDT
Resent-From: cmoore@BRL.ARPA
Resent-To: telecom-request@buit1.bu.EDU
Status: RO


TELECOM Digest     Sun, 24 May 87  1:09:31 EDT    Volume 7 : Issue 3

Today's Topics:

                   Re: 3-tone no connection question
                   help on modem + answering machine
                     Re: phone wiring for a modem
                          Re: Ringback codes
                        Re: Regular Phone Chirp
----------------------------------------------------------------------

To: "\F
From: umix!itivax!chinet!aicchi!dbb@EDDIE.MIT.EDU (Burch)
Subject: Re: 3-tone no connection question
Date: 22 May 87 14:15:12 GMT

Well, those three tones, (Which used to be real loud, 0dB), are
called SIT or Special Information Tones.  They are used to help
your local phone switch when you are connected to an intercept
recorder.  They tell your switch what to do about billing your
call.  However, once offhook supervision has been returned by the
party you call, they have no effect.  Therefore, you may use them
on your answering machine and they will have no effect. Except
Cuteness...  Seriously, I doubt that a recorder could send those
with enough purity to be heard by the PLL's that listen for them.

--
-David B. (Ben) Burch
 Analysts International Corp.
 Chicago Branch (ihnp4!aicchi!dbb)

"Argue for your limitations, and they are yours." - R. Bach

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

To: moss!cbatt!comp-dcom-telecom@EDDIE.MIT.EDU
From: moss!ihnp4!wheaton!steve@EDDIE.MIT.EDU (Steve Hurlbut)
Subject: help on modem + answering machine
Date: 22 May 87 21:15:30 GMT

Is there a phone answering machine plus modem combination that allows owner to
call in from remote location, have answering machine commect him to modem, then
revert back to answering machine when owner is finished using modem?

UUCP:ihnp4!wheaton!steve

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

To: seismo!comp-dcom-telecom@seismo.CSS.GOV
From: pur-ee!uxc.cso.uiuc.edu!hamilton@seismo.CSS.GOV
Subject: Re: phone wiring for a modem
Date: 22 May 87 22:11:00 GMT

> I need to wire a new phone line through a house for use with a modem.
> Is there some kind of sheilded phone cable that I could use to help
> reduce any noise in the connection?  Anything else I should be aware
> of when routing the wire such as not getting too close to electrical
> wires?  Thanks.

    i also expect to be installing a new line soon, so any advice or
horror stories would be appreciated.

	wayne hamilton
	U of Il and US Army Corps of Engineers CERL
UUCP:	{ihnp4,seismo,pur-ee,convex}!uiucuxc!hamilton
ARPA:	hamilton@uxc.cso.uiuc.edu	USMail:	Box 476, Urbana, IL 61801
CSNET:	hamilton%uxc@uiuc.csnet		Phone:	(217)333-8703
CIS:    [73047,544]			PLink:  w hamilton

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

To: seismo!comp-dcom-telecom@seismo.CSS.GOV
From: pur-ee!uxc.cso.uiuc.edu!hamilton@seismo.CSS.GOV
Subject: Re: Ringback codes
Date: 22 May 87 22:18:00 GMT

> Every once in a while, someone posts a note asking about ringback codes
> (numbers to dial to make your own telephone ring).  Unfortunately, these
> codes aren't the same everywhere, and are mostly undocumented.
> ...

    i use a technique that has worked flawlessly whenever and wherever
i have tried it:
	dial 0
	ask the operator to ring your number
	hang up
('course, you do need to know your own number...)

	wayne hamilton
	U of Il and US Army Corps of Engineers CERL
UUCP:	{ihnp4,seismo,pur-ee,convex}!uiucuxc!hamilton
ARPA:	hamilton@uxc.cso.uiuc.edu	USMail:	Box 476, Urbana, IL 61801
CSNET:	hamilton%uxc@uiuc.csnet		Phone:	(217)333-8703
CIS:    [73047,544]			PLink:  w hamilton

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

To: telecom-dis@buit1.bu.edu
Subject: Re: Regular Phone Chirp
Date: Thu, 21 May 87 16:07:23 -0700
From: kent@decwrl.DEC.COM

I'd completely forgotten about this. When we lived in Chicago, our
bedroom phone would chirp at 7am on the dot, every weekday. After we
stopped being annoyed by it, it became a useful alarm clock.

chris

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

End of TELECOM Digest
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