Here in the Magic Land Of Plano, Texas GTE accepts 970-xxxx and plays back your
ANI. There are supposedly a lot of other "maintenance" type of numbers but I have not been able to find any here. Has anyone heard of a number you can call,
play DTMF tones to (either from your phone or from a recording ) and have
the switch lady read back the digits to you? This is sort of like the scene in
"Three Days of the Condor" where Robert Redford hacks someone's phone. I
have heard that some CO's support such a number for purposes of testing
DTMF generators at the customers premise. Just curious.
> I'm wiring a new campus for telephone/data. I understand that there is
> a new (proposed?) standard for modular connector (RJ-45 - 8 pin) wiring
> that is being used by the operating companies. The new standard applies to
> intra-building wiring and provides 4 twisted pairs to each jack from an
> IDF. The idea is that ISDN is comming and this new wiring plan will
> facilitate that implimentation. It is also specified for the physical
> layer connections in 10baseT (or so I've heard).
>
> tip pair 1 - pin 5
> ring pair 1 - pin 4
> ...
How it works here:
on the 66 block in your phone room: (repeated for every four pair)
66blk conductor color function
1 blue-white tip
2 blue ring
3 orange-white data out (out?)
4 orange data out (in?) e.g. current loop ish
5 green-white data in (out?)
6 green data in (in?) see above
7 brown-white power1 (rarely used)
8 brown power2 (rarely used)
on any modular plug in the system: (meanings the same by color)
modular conductor color
1 orange-white
2 orange
3 green-white
4 blue
5 blue-white
6 green
7 brown-white
8 brown
You will note the odd jumbling of the color orders for the
modular connectors. This keeps the blue pair (tip and ring) in
the *center* of the modular jack so that any size plug (4, 6, or
8 wide) will line up these two conductors, thus making it safe to
install eight-wide jacks throughout your building.
Digital handsets, and hybred handsets use the orange and
green pairs. Similarly twisted pair networks use these same
conductors, so if you intend to use both digital instruments and
a building-wireing lan, you will need two jacks or to do some
non-standard wireing.
Power 1&2 are for things like lighted keysets and
princess phones. I am shure it is also "reserved for future use"
Most of the AT&T sanctioned equiptment which combines
an anilog(normal) handset and either a digital device *or* a LAN
will contain the breakout for the analog set within the digital
device. [Starlan cards, for instance, have three jacks; in; out;
and phone; and act as the splitter. you plug the board into the
wall and your phone into the board.]
I punch down all my one network stuff here, and many of the
phones related to them. I may have gotten the purpose of the
individual conductors in a pair backwards (e.g. reversed tip and ring;
or reversed data-in-in and data-in-out) But the color-coding and the
wireing concept are correct, and properly in order.
The blue and the blue-white are reversed on the modular connecters
to keep the white, solid, white, solid... pattern in the connectors.
You will also note that on every 66 block, you have 25 pair
and the standard only uses the first 24. The last pair is waste unless
you do something nonstandard.
50-pin-AMP-to-6-X-4pair-modular connectors are commonly available.
If you use the 66blk wiring EVERY TIME, the connections will remain
consistant, even if you are making a jack-to-jack connection through
your building wiring.
The modular spec is for left-to-right when you look at the
top of the plug (connector side up/tab down) while holding the wire.
(see figure)
O O G B B G B B
W S W S W S W S
[ | | | | | | | | ]
[ | | | | | | | | ]
[ | | | | | | | | ]
[-----------------]
[^^^^^^^^^^^^^^^^^]
[-----------------]
[ ]
[-----------------]
***
***
Rob.
------------------------------
Date: Mon, 5 Sep 88 22:12:54 EDT
From: USEREAFJ%mts.rpi.edu@itsgw.rpi.edu
The New York 212-540 prefix is indeed a special one. One can only dial
it in one's own area code. IE, from 914 (Westchester County), you
can dial 540-3000, but not 212-540-3000 or any other number with the
540 prefix.
-
The same goes for the 550 "Chat Line" services in the New York Metro
area. One can only dial 550-xxxx; if it's preceeded by an area code
the call will not go through.
-
The 970 prefix used to allow you to put an area code in front of it
when calling from the New York area, but then they put adlut messages
there and stopped that, maybe because it would be easier to block if
blocking was desired.
-
You can still call the 976 numbers in New York by placing an area code
in front of 976-1212 for the region in which you desire weather.
IE, 914-976-1212 gives you the weather in Westchester, 212 gives
New York City, 516 Long Island, etc.
-
Both the 976 and the 970 numbers can be accessed from outside the New
York area as a toll call. Some areas (Minneapolis, perhaps?) don't
allow 976 calls from outside the area (612), but this is probably
because the Bell Co. there puts all sorts of programs on the 976
prefix, like weather, chat lines, and interractive, and does not
want out-of-area callers participating in local chat lines (??).
Cities like LA do seem to be accessible from outside the area, so I'n not exactly sure shy some areas do indeed premit long distance callers to access their services and some do not. Anyonee
have any ideas on this?
-
Finally, I noticed that the 450 "exchange" in New York is not used in
212 OR 718, which is odd, since almost every other exchange that the
telco doesn't use for itself is occupied. Yet the 450 exchange doesn't
seem to do anything. The minute you dial 450 (from both Crossabar and
ESS/DMS/etc exchanges), you get a "Sorry..call can't be completed"
message. What could they be saving this one for??? Hmmmm.....
-
Doug
-
usereafj@rpitsmts.bitnet (temp.)
------------------------------
Date: Mon, 05 Sep 88 22:11:20 EDT
From: Christopher Chung <CHRIS%BROWNVM.BITNET@MITVMA.MIT.EDU>
Subject: cordless phone
I am look for the longest range cordless phone I can get. Does anyone
know what the longest range that is possible or exists? Who makes it and
where can I get one? I would like to use it in a building but the problem
is that there is a lot of steel and computers. We have tried a 1000 foot
cordless and that almost does it. I think one that is a little stronger
will just fit the ticket. Anyone know where I could get one to try?
Chris
------------------------------
Date: Mon, 5 Sep 88 22:33:32 EDT
From: USEREAFJ%mts.rpi.edu@itsgw.rpi.edu
Regarding ringback, New England Tel and Southern New England Tel seem
to use the 951-xxxx to 998-xxxx pattern. In Middletown, CT, 992 to 996
worked fine, whereas in other areas in Mass and Rhode Island seem to
use lower the 981 to 991 "prefixes".
-
New York City had/has(?) a weird system, where you dial 660 from any
phone in any exchange, wait for a dial tone, and then dial 2# (or 112
from a rotary), get a higher pitched tone, hang up, and the phone rings.
It no longer seems to work, but besides doing ringback, 660-4# would also
"hang" your phone for a while. Callers would get a busy signal, and
you couldn't get a dial tone for about 3 minutes. I'm sure there
were other funtions as well, although I never figured them out. Is the
660 still used for anything? When I dial it I get a second tone, but
none of the old numbers seem to do anything...
-
Oh, and incidentally, in case no one mentioned it, ANAC (ANI?) for
212/718 New York City is 958, and dialing exchange xxx-9901 will
usually get a recording or computer telling you the area code and
exchange you dialed. (IE, 516-484-9901 says "You have reached the
