


@FROM   :telecom@delta.eecs.nwu.edu                                   
(Continued from last message)
You mention a split coming in Connecticut.  But you show 803 as the
new area code.  That is South Carolina.  Please correct.

You show 540 area code (Virginia) being fully cut over 7/9/95.  That
is before the effective date!  Please correct.

Also, there has been mention in the Digest of area code 340 for Puerto
Rico, now in area 809.

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

Date: Sat, 24 Dec 1994 15:14:15 -0500
From: marya@titan.ucs.umass.edu (Jeffrey William McKeough)
Subject: Re: Watching the Area Codes Split
Organization: Beet Cabal: More So Than Thou!


While sharing with the group, Steve Grandi contributed:

> 13) 10/??/96   AC 803 splits from AC 203 (Connecticut)
                    ^^^
For obvious reasons, this must be a typo.  According to my Aunt at
SNET RCMAC, the new NPA is 890.


Jeffrey William McKeough  marya@titan.ucs.umass.edu

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

Date: Sat, 24 Dec 94 02:10 CDT
From: Neal McLain <NMCLAIN@macc.wisc.edu>
Subject: Re: Watching the Area Codes Split


A policy question about area code splits ... perhaps someone from
Bellcore can provide an answer.
 
I note that when 615 splits, Nashville metro area will retain 615, and
Knoxville and Chattanooga will move to 423.
 
My question: given that all three cities are centers of rapidly-
growing 
metro areas, why not a three-way split:
 
     Nashville retains 615.
 
     Knoxville gets 423.
 
     Chattanooga gets something else.
 
Presumably, this would prevent having to split 423 in the future, with
the anomalous result that one city would have its area code changed
*three times* (including the original 901/615 split back in the 50's).
 
This question obviously applies to any similar situation, not just 
Tennessee.
 
------------------------------

From: rjones@halcyon.halcyon.com (Ry Jones)
Subject: Re: 360 NPA in Partial Service
Date: 24 Dec 1994 03:35:56 GMT
Organization: NW NEXUS, Inc. -- Internet Made Easy (206) 455-3505


David W. Tamkin (dattier@wwa.com) wrote:

> As for Seattle, I don't know; if places like Port Townsend and Oak
> Harbor will be in 360, then 360 will 360 around 206 the way 706 does
> around 404 or, for now, 409 does around 713.

206 will consist of King county, parts of Snohomish and Pierce
counties, and that's it. Consider the Houston model. Or think of an
overlay. 360 will 360 206 ... bah. Someone grab the V&H from the
Bellcore tape and post it.


rjones@halcyon.com net.viking 507915.21E 5209567.01N UTM ZONE 10 
OG+GOT

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

Date: Sat, 24 Dec 94 15:16:43 GMT
From: Carl Moore <cmoore@ARL.MIL>
Subject: Re: 360 NPA in Partial Service


spiff@eskimo.com writes:

> (At least in theory.  I'd be interested in hearing from people at 
the
> edges of the new 206/360 line to find out if yesterday's free call 
is
> tomorrow's toll call, or vice versa.)

Calling areas, message unit charge, and tolls should not be affected
by a split.  But the method of making some calls will change.

There are local calls across the 301/410 border (Md.) and 215/610
border in Pa., and the area code is used for this where just the seven
digit number was used before.

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

From: random@dorsai.dorsai.org (Andy Butts)
Subject: NYNEX Ringmate and Modems
Organization: The Dorsai Embassy - New York
Date: Sat, 24 Dec 1994 17:44:00 GMT


Hey All!

I know somebody out there is familiar with the NYNEX ringmate service.
Well, whoever you are, I wanted to know something about it.  If I
subscribe so that I have one extra number (in addition to my normal
number) what will a modem on my telephone line detect when someone
calls the Ringmate number?  Will it be RING, or something like RING
RING?  Any help is appreciated.


RaNdOm

random@dorsai.dorsai.org


[TELECOM Digest Editor's Note: Your modem probably won't know the
difference. The current surge will most likely be sufficient to
trigger the modem into its normal answering mode (or whatever you
do when you get an incoming call). Some variations on the normal
ringing cadence may not be sufficiently long enough to trigger the 
modem to answer on the same ring each time, i.e. maybe the phone
will ring twice or three times before the modem is sufficiently
juiced up to answer on what it regards as one ring, etc.   PAT]

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

From: lsn92@ecs.soton.ac.uk (L S Ng)
Subject: Re: What is a T1 Line?
Date: 24 Dec 1994 12:22:49 -0600
Organization: UTexas Mail-to-News Gateway


Edward F. Munro writes:

> If T1 is 24 X 64K on 4 wires, and ISDN is 2 X 64K, then why do you 
only get 
> 4 X 64K when you use 2 ISDN links?  Is there a way to get 2 ISDN 
lines and 
> set yourself up with T1 bandwidth?!?

I thought T1 has now been repackaged by the telephone companies as
ISDN Primary Access or Primary Rate ISDN (PRI), consisting of up to 24
B channels (1.5Mbps) in North America or 30 B channels (2Mbps) in 'the
rest of the world'.

Originally T1 or Primary Access were used only within the telephone
networks (from one local exchange/central office (CO) to another), but
now it seems that, by packaging it as PRI, such rate now runs from CO
to customers premises (your office/home). Each T1 link is essentially
either a copper pair or an coaxial cable. The reason why T1 can run at
1.5Mbps plus whereas your ordinary telephone line can run only at
30kbps is because of a low pass filter! Low pass filters are inserted
at the end of the ordinary telephone lines for two reasons: to improve
speech quality and (more importantly) to limit your modem speed!

Has anyone ever used/seen a PRI? The above is just a guess because I
have not seen/used one. PRI/T1 are, I heard, usually run over 2 copper
pairs (4 wires). This means that your ordinary telephone line should
at least be able to run at 1 Mbps per pair. And ISDN Basic Rate (BRI)
runs at 192kbps. The telephone company wants you to pay different
prices for services over the same old pair of copper wire.

It is possible to achieve 2Mbps over four wires, but you need to ask
for the telephone companies' "courtesy" to remove the low pass
filter and the 'relatively ancient' ISDN switches (192kbps).

2Mbps is the limit of working in full duplex mode.  In some
applications such as video/TV, it is possible to pump more than 6Mbps
down the copper wires.  This technique is known as ADSL (Asymmetrical
Digital Subscriber Loop) and it is half duplex.  British Telecom was
blocked by Bristish Government last month from using this technology
for broadcasting TV over the old copper telephone networks to home.
The technology is ready but the bureaucrats are not.

Copper wires are more or less similar to 'dark fibre'.  Dark fibre is
a piece of optical fibre whose bandwidth and channel capacity are
enormous (almost infinite) and it is hoped that telephone companies
will give you the fibre but not limiting the customers in terms of
channel capacity or bit rate that they can use, hence the name 'dark'.
But only hope.  The fastest electronics switches could only run at
Giga bits per second.  With SONET or ATM, the telephone companies is
planning to give you 150Mbps or 600Mbps only.

Remember also your Ethernet also run over the same old copper pair at
10Mbps.  The practical limit for single copper coaxial is more than
100Mbps.  In fact, it is recommended that ATM may use copper coaxial
for the 150Mbps.

So remember this: when you ask for ATM from your telephone company,
make sure you get an optical fibre. Or they would give you a copper
coax for 150Mbps and ask for more money when you need to 'upgrade' it
to 600Mbps.  It is not possible to use copper coax at 600Mbps which is
why you need a piece of cheap glass wire, otherwise known as the
optical fibre by the telephone companies who want to glamorised their
product names.


L S Ng

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

Date: Sat, 24 Dec 1994 10:55:48 PST
From: wegeng.XKeys@xerox.com
Subject: Re: Rochester Telephone's Open Market Plan


As a current customer of Rochester Telephone, I`m really curious about
*what* advanced services are going to be offered by the various
service providers.  Movies on demand is perhaps one option (Roch Tel
is experimenting with this in a limited way now).  Another option
might be a low cost Internet connection.  What else?  Roch Tel sure
isn`t talking.

As for alternative phone service using the fiber network owned by
Greater Rochester Cablevision/Time Warner, I`m skeptical about the
level of service that these folks are capable of providing.  At the
moment I`m very annoyed at them because they refuse to install cable
tv service at my new (to me) house unless I`m at home.  This house
already has cable service, so "installation" really means having the
technician climb the poll and make sure that the appropriate traps are
installed on the line so that I can`t watch free HBO.  When I asked
why I had to be home, the GRC rep said that they have to come into my
house and make sure that everything is working, so that they won`t
have to come out a second time if there is an installation problem.

This tells me that GRC must have a lot of problems with their cable
system; or at least a lot more problems than Rochester Telephone has
with their system (based on the fact that Roch Tel didn`t require me
to be home when they turned on my phone service).  If GRC`s cable tv
system is that unreliable, why should I trust them to provide reliable
telephone service using the same wires?


Don Wegeng   wegeng.xkeys@xerox.com

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

End of TELECOM Digest V14 #469
******************************

                                                                                                  
