TELECOM Digest Fri, 30 Sep 94 15:19:00 CDT Volume 14 : Issue
382
Inside This Issue: Editor: Patrick A.
Townson
T1<->23 or 24 BRI Equipment? (Bob Ames)
Switch to Sprint Check/ Must Keep Them 160 Days (D. Castillo)
EDI Billing (Rajiv Gupta)
What Is # Called? (Wes Leatherock)
MF Digit Grabber Wanted (Paul Cook)
RI Installs Speed-Bumps For the Information Superhighway (Michael
Deignan)
UDI vs RDI in ISDN (psyche@metronet.com)
Internet en Mexico (Robert L. McMillin)
Revenue Sharing Between Operators in a Network (Sharad Ketan)
Help CCITT 16kb/s LD-CELP G728 (Ya-di Lin)
UC Berkeley Short Courses on Broadband Communications (Harvey
Stern)
Call For Papers: Malaysian Communications Conference (Mazlan
Abbas)
Need Amp to Boost DTMF Strength (htcink@teleport.com)
Zmodem for Sparc, no XWindows (Ed Martini)
Help Needed With Meridian 9216 (Florence M. Hurley)
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----------------------------------------------------------------------
From: bob@ccnet.com (Bob Ames)
Subject: T1<->23 or 24 BRI Equipment?
Date: 30 Sep 1994 10:37:39 -0700
Organization: Creative Computer Solutions
What is available to connect two remote offices via T1?
Ideally, I'd like to use a T1 on each end and provide:
*) Intercom service,
*) TCP/IP traffic (Ethernet),
*) (One/Several?) ISDN S/T or U lines. I'd like to be able to use
ISDN phones on one end and on the other end connect to the
Intercom system or to the LD Company via POTS or ISDN. Or to
use, say, a Waverunner on one side and get thru the T1 to the
main office, and then routed into the Ethernet on the other side.
*) Anything else ISDN provides, like FAX.
Do I need a PBX for all of this? Certainly some kind of switch-like
routing seems necessary.
Perhaps just a device which converts T1 into 24 ISDN B channels,
and looks like an ISDN switch and provides, say, some S/T jacks.
How much traffic can fit on an S/T? For example, can I put all 24 B
channels on the S/T bus concurrently without degradation or failure?
(I doubt it)
Bob Ames
UNIX & Telecom Administrator
Creative Computer Solutions
bob@ccnet.com <
Quoting Patrick Hoepfner hoepfner@haiti.gsfc.nasa.gov <=-
PH> In article <779663044snz@bigbear.demon.co.uk>,
PH> Susan@bigbear.demon.co.uk wrote:
> In article
> Craig.Williamson@ColumbiaSC.NCR.COM "Craig Williamson"
writes:
> > >Rattlesnake Stu (whitmore@tahoma.cwu.edu) wrote:
> > >: -] >The airlines call it a "Cross of Lorraine". I know not
why.
> > >What's wrong with octothorpe?
> > Well that works except that many people would look at you and
say
> > "Huh?" I would think that you could call it the number sign
since it
> > used for that also.
PH> I agree. But another problem is that takes to long to say.
When
PH> calling out a Un*x regular expression how many times do you hear
people
PH> say "bang" rather than "Exclamation Point". I think the same
goes for
PH> "octothorpe" or "Cross of Lorraine" versus something like
"pound". And
PH> since Un*x permeates the net (for better or worse) it is in more
common
PH> usage that other "national" languages here. And besides,
"octothorpe"
PH> doesn't even show up in my dictionary. How many people are
going to
PH> know what it is?
> I always call '#' Hash. Isn't that what it is?
While those reading this newsgroup undoubtedly are very Unix
literate, etc., much of the world is not. Every system I have ever
called
with a voice response unit, such as those used to route calls to
departments
or extensions, banks' systems that allow you to get your balance,
lists
of transactions, etc., and various other functions, always call it the
pound sign.
I am pretty well resigned to calling it the pound sign
because,
after all, I rarely have occasion to use any word to describe it on
the
computer (I simply hit the key or read the symbol), but I often have
occasion to use voice response units.
... [text deleted] ...
PH> .... But
PH> whenever I see the * symbol I think of the mark left by a bug on
a
PH> car's windshield! Once it gets in your mind it is kind of hard
to
PH> forget it.
That symbol is always called "star" in voice response units
I
have listened to.
As far as the exclamation point goes, it does not occur on
voice response units because there is no key for it on a touch tone
telephone, so the only time it has to be called anything is when you
are talking to another computer user. So "bang" is as good as
anything there. ("Bang" is not limited to Unix users; MS-DOS users
call it that, too.)
(But if you're talking to a writer, editor, printer,
typesetter,
etc., you'd better call it an exclamation point. They don't
understand
"bang".)
Wes Leatherock
------------------------------
Date: Fri, 30 Sep 94 12:25:00 EST
From: Proctor & Associates <0003991080@mcimail.com>
Subject: MF Digit Grabber Wanted
I'm looking for a hand held MF Digit Grabber, a device that can
display MF (not DTMF) digits monitored on a trunk.
Can anyone point me to a manufacturer?
Paul Cook 206-881-7000
Proctor & Associates MCI Mail 399-1080
15050 NE 36th St. fax: 206-885-3282
Redmond, WA 98052-5378 3991080@mcimail.com
------------------------------
From: md@pstc3.pstc.brown.edu (Michael P. Deignan)
Subject: RI Installs Speed-Bumps For the Information Superhighway
Date: 30 Sep 1994 16:28:16 GMT
Organization: Population Studies & Training Center
Here's the latest from our fine RI legislators:
General Laws Pertaining to Telecommunication Licensing
RIGL 5-69 Withstanding the exceptions contained in section 5-69-7 of
the general laws of the state of RI -- only licensed
telelcommunications
contractors, licensed telecommunications system technicians, and
licensed telecommunications system installers shall engage in, or
design, install, alter, service, or test telecommunication systems in
the state of RI.
Categories requiring licensure are as follows:
Data communications
Telephony
Video Communications
Sound
A "grandfather period" is in effect from July 12, 1994 until January
12, 1995, after that date all applicants for licensing must pass a
written examination.
I guess you have to be licensed to sell modems in computer stores now.
MD
The best way for Bill Clinton to keep his legal fees down is to keep
his pants zipped up.
------------------------------
Date: Thu, 29 Sep 1994 23:00:26 -0500
From: perpetual psycheness
Subject: UDI vs RDI in ISDN
Organization: Texas Metronet, Internet for the Individual 214-705-
2901 (info)
In the world of ISDN, what exactly does UDI and RDI mean? And when
would a person know which one to use? (e.g. you try making a UDI call
and then realize that it doesn't work, so then you try RDI? What kind
of indications does the network use to determine what to do?)
I think that UDI is supposed to be a 64kbps clear channel xmission
(and I think you can have an RDI call over a trunk conditioned for
UDI). And I think that RDI means that the data is restricted in the
sense that you can't have some number of contiguous 0's, which
effectively reduces the maximum bit rate to 56kbps, right? But then,
could you try sending data at 64kbps for an RDI call or is one of the
bits for each channel used to keep sync (I'm assuming this is over T1
type trunks for RDI; I guess E1 type trunks don't have this problem
and are 64kbps clear channel trunks by nature?).
But, 64kbps or 56kbps doesn't necessarily mean UDI and RDI,
respectively,
does it?
And how does rate adaption come into the picture? Is it possible to
have 9600bps data stream rate adapted up to 56kbps for RDI? or up to
64kbps for UDI? Is V.120 or V.110 common in the U.S.? What is
commonly used overseas? What are the advantages of V.120 over V.110
or are there not any?
A lot of questions... ;)
Thanks for any information you can provide....
------------------------------
Date: Fri, 30 Sep 94 09:31 PDT
From: rlm@helen.surfcty.com (Robert L. McMillin)
Subject: Internet en Mexico
Perhaps of some interest to the readers of this forum. I've heard of
a few people wanting Internet access across the border. Here's one
provider.
------- Start of forwarded message -------
From: marior@nic.cerf.net (Lic. Silvia V. Vargas Gutierrez)
Newsgroups: la.forsale
Subject: INTERNET EN MEXICO
Date: 29 Sep 1994 15:13:32 PST
Organization: CERFnet Dial n' CERF Customer
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