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Basic Telecommunications #2
NOTICE: TO ALL CONCERNED Certain text files and messages contained on this site deal with activities and devices which would be in violation of various Federal, State, and local laws if actually carried out or constructed. The webmasters of this site do not advocate the breaking of any law. Our text files and message bases are for informational purposes only. We recommend that you contact your local law enforcement officials before undertaking any project based upon any information obtained from this or any other web site. We do not guarantee that any of the information contained on this system is correct, workable, or factual. We are not responsible for, nor do we assume any liability for, damages resulting from the use of any information on this site.
==========================
=BASIC TELECOMMUNICATIONS=
==========================
PART II
PREFACE:
IN PART II, WE WILL EXPLORE THE VARIOUS SPECIAL BELL #'S, SUCH AS: CN/A,
AT&T NEWSLINES, LOOPS, 99XX #'S, ANI, RINGBACK, AND A FEW OTHERS.
CN/A:
-----
CN/A, WHICH STANDS FOR CUSTOMER NAME AND ADDRESS, ARE BUREAUS THAT EXIST SO
THAT AUTHORIZED BELL EMPLOYEES CAN FIND OUT THE NAME AND ADDRESS OF ANY
CUSTOMER IN THE BELL SYSTEM. ALL #'S ARE MAINTAINED ON FILE INCLUDING
UNLISTED #'S.
HERE'S HOW IT WORKS:
1) YOU HAVE A # AND YOU WANT TO FIND OUT WHO OWNS IT, E.G. (914) 555-1234.
2) YOU LOOK UP THE CN/A # FOR THAT NPA IN THE LIST BELOW. IN THE EXAMPLE,
THE NPA IS 914 AND THE CN/A # IS 518-471-8111.
3) YOU THEN CALL UP THE CN/A # (DURING BUSINESS HOURS) AND SAY SOMETHING
LIKE, "HI, THIS IS JOHN JONES FROM THE RESIDENTIAL SERVICE CENTER IN MIAMI.
CAN I HAVE THE CUSTOMER'S NAME AT 914-555-1234. THAT # IS 914-555-1234."
MAKE UP YOUR OWN REAL SOUNDING NAME, THOUGH.
4) IF YOU SOUND NATURAL & CHEERY, THE OPERATOR WILL ASK NO QUESTIONS.
HERE'S THE LIST:
NPA CN/A # NPA CN/A #
--- ------------ --- ------------
201 201-676-7070 517 313-232-8690
202 202-384-9620 518 518-471-8111
203 203-789-6800 519 416-487-3641
204 ****N/A***** 601 601-961-0877
205 205-988-7000 602 303-232-2300
206 206-382-8000 603 617-787-2750
207 617-787-2750 604 604-432-2996
208 303-232-2300 605 402-345-0600
209 415-546-1341 606 502-583-2861
212 518-471-8111 607 518-471-8111
213 213-501-4144 608 414-424-5690
214 214-948-5731 609 201-676-7070
215 412-633-5600 612 402-345-0600
216 614-464-2345 613 416-487-3641
217 217-525-7000 614 614-464-2345
218 402-345-0600 615 615-373-5791
219 317-265-7027 616 313-223-8690
301 301-534-1122 617 617-787-2750
302 412-633-5600 618 217-525-7000
303 303-232-2300 701 402-345-0600
304 304-344-8041 702 415-546-1341
305 912-784-9111 703 804-747-1411
306 ****N/A***** 704 912-784-9111
307 303-232-2300 705 416-487-3641
308 402-345-0600 707 415-546-1341
309 217-525-7000 709 ****N/A*****
312 312-769-9600 712 402-345-0600
313 313-223-8690 713 713-658-1793
314 314-436-3321 714 213-995-0221
315 518-471-8111 715 414-424-5690
316 816-275-2782 716 518-471-8111
317 317-265-7027 717 412-633-5600
318 318-227-1551 801 303-232-2300
319 402-345-0600 802 617-787-2750
401 617-787-2750 803 912-784-9111
402 402-345-0600 804 804-747-1411
403 403-425-2652 805 415-546-1341
404 912-784-9111 806 512-828-2502
405 405-236-6121 807 416-487-3641
406 303-232-2300 808 212-226-5487
408 415-546-1341 BERMUDA ONLY
412 412-633-5600 809 212-334-4336
413 617-787-2750 812 317-265-7027
414 414-424-5690 813 813-228-7871
415 415-546-1132 814 412-633-5600
416 416-487-3641 815 217-525-7000
417 314-436-3321 816 816-275-2782
418 514-861-6391 817 214-948-5731
419 614-464-2345 819 514-861-6391
501 405-236-6121 901 615-373-5791
502 502-583-2861 902 902-421-4110
503 503-241-3440 903 ****N/A*****
504 504-245-5330 904 912-784-9111
505 303-232-2300 906 313-223-8690
506 506-657-3855 907 ****N/A*****
507 402-345-0600 912 912-784-9111
509 206-382-8000 913 816-275-2782
512 512-828-2501 914 518-471-8111
513 614-464-2345 915 512-828-2501
514 514-861-6391 916 415-546-1341
515 402-345-0600 918 405-236-6121
516 518-471-8111 919 912-784-9111
BELL USES THESE #'S MAINLY TO FIND OUT WHO OWNS A # THAT A CUSTOMER CLAIMS
HE NEVER CALLED.
NOTE: THIS IS THE MOST COMPLETE LIST OF CN/A #'S IN MY POSSESSION (WITH ONLY
5 #'S NOT AVAILABLE) THIS LIST WAS COPYRIGHTED IN 1982 BY "JUDAS
GERARD" AS IT ORIGINALLY APPEARED IN TAP ISSUE #78. (TAP, ROOM 603,
147 W 42ND ST, NEW YORK, NY 10036-- SUBSCRIPTIONS $10/YR.)
AT&T NEWSLINES:
---------------
NEWSLINES ARE RECORDINGS THAT BELL EMPLOYEES CALL UP TO FIND OUT THE LATEST
INFO ON STOCK, TECHNOLOGY, ETC. CONCERNING THE BELL SYSTEM.
HERE ARE THE #'S THAT ARE CURRENTLY KNOWN TO PHREAKS (AT LEAST ME, ANYWAY):
201-483-3800 NJ 513-421-9060 OH
203-771-4920 CT 516-234-9914 NY
212-393-2151 NY 518-471-2272 NY
213-621-4141 CA 617-955-1111 MA
213-829-0111 CA (GTE) 702-789-6711 NV
213-449-8830 CA 713-224-6116 TX
312-368-8000 IL 714-238-1111 CA
313-223-7223 MI 717-255-5555 PA
314-247-5511 MO 717-787-1031 PA
408-493-5000 CA 802-955-1111 VE
412-633-3333 PA 808-533-4426 HI
414-678-3511 WI 813-223-5666 FL
416-929-4323 ONT. 914-948-8100 NY
503-228-6271 OR 916-480-8000 CA
=======
=LOOPS=
=======
FIRST OF ALL, YOU MUST UNDERSTAND THE CONCEPT OF LOOPS. I THINK THAT THE
BEST WAY THAT THIS IS UNDERSTOOD IS THE WAY THAT PHRED PHREEK EXPLAINED IT...
"NO SELF-RESPECTING PHONE PHREAK CAN GO THROUGH LIFE WITHOUT KNOWING WHAT A
LOOP IS, HOW TO USE ONE, AND THE TYPES THAT ARE AVAILABLE. THE LOOP IS A
GREAT ALTERNATIVE COMMUNICATION MEDIUM THAT HAS MANY POTENTIAL USES THAT
HAVENT'T EVEN BEEN TAPPED YET. IN ORDER TO EXPLAIN WHAT A LOOP IS, IT
WOULD BE HELPFUL TO VISUALIZE TWO PHONE NUMBERS (LINES) JUST FLOATING AROUND
IN THE TELCO CENTRAL OFFICE (CO). NOW, IF YOU (AND A FRIEND PERHAPS) WERE TO
CALL THESE TWO NUMBERS AT THE SAME TIME, POOOOPFFF!!!, YOU ARE NOW CONNECTED
TOGETHER. I HEAR WHAT YOU'RE SAYING OUT THERE..., "BIG DEAL" OR "WHY SHOULD
MA BELL COLLECT HERE TWO MSU'S (MESSAGE UNITS) FOR ONE LOUSY PHONE CALL!?"
WELL... THINK AGAIN. HAVEN'T YOU EVER WANTED SOMEONE TO CALL YOU BACK BUT,
WERE RELUCTANT TO GIVE OUT YOUR HOME PHONE NUMBER (LIKE THE LAST TIME YOU
TRIED TO GET YOUR FRIEND'S UNLISTED # FROM THE BUSINESS OFFFICE)? OR HOW
ABOUT A COLLECT CALL TO YOUR FRIEND WAITING ON A LOOP, WHO WILL GLADLY
ACCEPT THE CHARGES? OR BETTER YET, STUMBLING UPON A LOOP THAT YOU DISCOVER
THAT HAS MULTI-USER CAPABILITY (FOR THOSE LATE-NIGHT CONFERENCES). BEST OF
ALL IS FINDING A NON-SUPERVISED LOOP THAT DOESN'T CHARGE ANY MSU'S OR TOLLS
TO ONE OR BOTH PARTIES. EXAMPLE: MANY MOONS AGO, A LOOP AFFECTIONATELY KNOWN
AS 'THE 332 LOOP' WAS NON-SUP (IE, NON-SUPERVISED) ON THE TONE SIDE. I HAD MY
FRIEND IN CALIFORNIA DIAL THE FREE (NON-SUP) SIDE, (212) 332-9906 AND I
DIALED THE SIDE THAT CHARGED, 332-9900. AS YOU CAN SEE, I WAS CHARGED ONE
MSU, AND MY FRIEND WAS CHARGED ZILCH, FOR AS LONG AS WE WISHED TO TALK!!!"
AHHH...HAVE I PERKED YOUR INTEREST YET? IF SO, HERE IS HOW TO FIND A LOOP
OF YOU VERY OWN. FIRST, DO ALL OF YOU LOOP SEARCHING AT NIGHT! THIS IS
BECAUSE THE LOOPS SERVE A GENUINE TEST FUNCTION WHICH TELCO USES DURING THE
DAY. (WE DON'T WANT TO RUN INTO AN IRATE LINEMAN NOW, DO WE?) TO FIND A
LOOP, HAVING 2 #'S IS A DEFINITE PLUS. IF NOT, HAVE A FRIEND TO DIAL #'S AT
HIS LOCATION. LAST RESORT, TRY DIALING FROM TWO ADJACENT PAY PHONES. NOW GET
YOUR TRUSTY WHITE PAGES (*), AND TURN TO THE PAGE WHERE IT LISTS THE # OF
MSU'S FROM YOUR EXCHANGE (OR EXCHANGES IN YOUR PRIMARY CALLING AREA) THE IDEA
IS TO FIND A LOOP THAT IS WITHIN YOUR PRIMARY CALLING AREA OR IS ONLY 1 MSU IN
YOUR AREA (CALL AREA A). THIS IS SO YOU DON'T GO BANKRUPT TRYING TO FIND A
LOOP. WRITE DOWN ALL OF THESE EXCHANGES AND DO A 99XX SCAN OF THOSE EXCHANGES
(99XX SCANNING WILL BE DISCUSSED SHORTLY).
BEFORE WE GET UP TO 99XX SCANNING, WE WILL LOOK AT SOME OTHER LOOP INFO:
LOOPS ARE FOUND PAIRS WHICH ARE USUALLY CLOSE TO EACH OTHER. FOR EXAMPLE,
IN NPA 212, WHERE THE INFAMOUS LOOPS ARE FOUND, THERE IS A STANDARD LOOP
FORMAT:
MANHATTAN & BRONX-------NNX-9977/9979
BROOKLYN & QUEENS-------NNX-9900/9906
NNX IS THE EXCHANGE TO BE SCANNED. HERE ARE SOME LOOPS THAT HAVE BEEN FOUND
IN NYC. THESE ARE USED MOSTLY BY PHREAKS AND CALL-IN LINES FOR PIRATE RADIO
STATIONS:
212-220-9900/9906
212-283-9977/9979
212-352-9900/9906
212-365-9977/9979
212-529-9900/9906
212-562-9977/9979
212-982-9977/9979
212-986-9977/9979
THE LOWER # IS THE TONE SIDE (SINGING SWITCH). THE HIGHER # IS ALWAYS
SILENT. THE TONE DISAPPEARS ON THE LOWER # WHEN SOMEBODY DIALS IN THE OTHER
SIDE OF THE LOOP. IF YOU ARE ON THE HIGHER #, YOU'LL HAVE TO LISTEN TO THE
CLICKS TO SEE IF SOMEBODY DIALED-IN. THE NYC 982 & 986 LOOPS ARE DIFFERENT
FROM OTHERS. USUALLY WHEN YOU PARK ON A LOOP, YOU WILL HEAR WHO EVER CALLS IN
ON THE OTHER HALF. WHEN THEY'RE DONE, THE NEXT CALLER (IF ANY) WILL BE QUEUED
IN, ONE AFTER ANOTHER. ON THE NYC 982 & 986, YOU SOMETIMES CAN'T GET ANY MORE
CALLERS IN AFTER THE FIRST. FURTHERMORE, IF YOU PARK ONE OF THESE LOOPS AND
THERE IS NOBODY ON THE OTHER END FOR MORE THAN 4 MINUTES, YOU MAY BE
AUTOMATICALLY DISCONNECTED. THESE LOOPS ARE GOOD FOR BACK-UP PURPOSES WHEN
ALL OTHER LOOPS ARE BUSY.
99XX SCANNING:
--------------
MOST EVERY EXCHANGE IN THE BELL SYSTEM HAS A WIDE VARIETY OF TEST #'S AND
OTHER "GOODIES," SUCH AS LOOPS.
THESE "GOODIES" ARE USUALLY FOUND BETWEEN 9900 AND 9999 IN YOUR LOCAL
EXCHANGE. IF YOU HAVE THE TIME AND INITIATIVE, SCAN YOUR EXCHANGE AND YOU
MAY BECOME LUCKY!
HERE ARE MY FINDINGS IN THE 914-268:
9901 - VERIFICATION (RECORDING OF A/C
AND EXCHANGE)
9936 - VOICE # TO THE TELCO CO
9937 - VOICE # TO THE TELCO CO
9941 - CARRIER
9960 - OSC. TONE (TONE SIDE LOOP)
9963 - TONE (STOPS: MUTED)
9966 - CARRIER
9968 - TONE THAT DISAPPEARS--RESPONDS
TO CERTAIN TOUCH-TONE KEYS
MOST OF THE #'S BETWEEN 9900 & 9999 WILL RING, BE BUSY, GO TO A SPECIAL
INTERCEPT OPERATOR ("WHAT #, PLEASE?") , OR WILL GO TO A "THE # YOU HAVE
REACHED..." RECORDING. WHAT YOU FIND DEPENDS UPON THE SWITCHING EQUIPMENT IN
THE EXCHANGE AND THE TELCO OPERATING COMPANY.
WHEN SEARCHING FOR LOOPS, YOU MAY FIND ONE OF THE FOLLOWING POSSIBILITIES
WHEN YOU FIND ONE:
1. YOU CAN HEAR THROUGH THE LOOP (NOT MUTED), BUT THERE IS A 1/2 SECOND CLICK
EVERY 10 SECONDS THAT INTERRUPTS THE AUDIO. THIS TYPE IS GOOD FOR BACK-UP
USE BUT THE %$#'&" CLICK IS SUPER ANNOYING.
2. ONE SIDE OF THE LOOP IS BUSY; TRY IT AGAIN LATER.
3. THE TONE DISAPPEARS, BUT YOU CANNOT HEAR THROUGH IT (THE LOOP IS MUTED,
TRY AGAIN IN A MONTH OR SO)
4. YOU GET "THE # YOU HAVE REACHED RECORDING." NO LOOP THERE!
MOST LOOPS ARE MUTED (#3), BUT THEIR STATUS DOES CHANGES FROM TIME-TO-TIME.
IT ALL DEPENDS IF THE TELCO MAINTENANCE PERSONNEL REMEMBER TO "THROW THE
SWITCH", IE, TURN OFF THE LOOP.
SINCE I HAVE DONE THE ABOVE 914-268 99XX SCAN, CONGERS (268) HAS INSTALLED
NEW SWITCHING EQUIPMENT (DMS100). SOME OF THE NUMBERS ARE THE SAME, BUT I
HAVE NOTICED THAT ON THE DMS100, THE RECORDINGS ARE ALSO STORED IN THIS AREA.
268-9903, 9906, 9909, & 9912 ARE ALL DIFFERENT RECORDINGS. ALSO, THERE ARE 2
FORTRESS FONE RECORDINGS AT 268-9911 (DEPOSIT 5 CENTS OR ELSE) AND 268-9913
(DEPOSIT 10 CENTS). NONE OF THESE RECORDINGS SUPE AND ALOT OF OTHER 99XX
#'S DON'T SUPE EITHER.
IN SOME AREAS (LIKE MD), 9906-7 IS RINGBACK. IN WASHINGTON, THERE IS A
SWEEP TONE TEST AT (202) 560-9944. IN NYC (212), YOU'LL FIND THE INFAMOUS
LOOP LINES (AS MENTIONED ABOVE).
IT WILL BE EASIER TO SCAN YOUR EXCHANGE IF YOU MAKE UP A CHART LIKE THE ONE
BELOW:
NPA-NNX-99XX SCAN
--------------------------------------
!99X X>:0 :1 :2 :3 :4 :5 :6 :7 :8 :9 !
--------------------------------------
!990 : : : : : : : : : : !
--------------------------------------
!991 : : : : : : : : : : !
--------------------------------------
!992 : : : : : : : : : : !
--------------------------------------
!993 : : : : : : : : : : !
--------------------------------------
!994 : : : : : : : : : : !
--------------------------------------
!995 : : : : : : : : : : !
--------------------------------------
!996 : : : : : : : : : : !
--------------------------------------
!997 : : : : : : : : : : !
--------------------------------------
!998 : : : : : : : : : : !
--------------------------------------
!999 : : : : : : : : : : !
--------------------------------------
THIS LEAVES YOU WITH 100 BOXES (1 FOR EACH # BETWEEN 9900 & 9999). YOU
SHOULD MAKE YOUR BOXES BIG ENOUGH SO YOU CAN WRITE SOME SORT OF SHORTHAND IN
THEM. FOR EXAMPLE:
B - BUSY (TRY AGAIN AT ANOTHER TIME)
R - RINGS (TRY AGAIN AT ANOTHER TIME)
O - INTERCEPT OPERATOR ("WHAT # YOU
CALLING?)
R1- RECORDING 1 (MAKE A MARGIN NOTE OF
THE TYPES OF REORDINGS YOU GET)
T - TONE ] TONE AT A LOWER # + IGNORE
I - IGNORE ] AT A HIGHER # = LOOP
V - VOICE # TO TELCO CO - THEY USUALLY
ANSWER WITH THE CITY NAME OR AREA.
C - CARRIER
THERE WILL BE OTHERS AND YOU SHOULD USE OTHER CHARACTERS THAT YOU CAN
UNDERSTAND.
NOW, BACK TO LOOPS! AS YOU MAY HAVE NOTICED IN MY 914-268 SCAN, I FOUND A
MUTED LOOP AND A TONE SIDE. 914-268 FAILED TO COME UP WITH THE SILENT SIDE
OF A LOOP! THEREFORE, THERE IS NO LOOP IN THAT EXCHANGE. I THEN SCANNED
ANOTHER EXCHANGE IN MY PRIMARY CALLING AREA (914-634) AND I FOUND A LOOP!!
(914) 634-9923/9924
SO, IF AT FIRST YOU DON'T SUCCEED, MOVE ONTO ANOTHER EXCHANGE.
IF YOU USE THE BOX METHOD THAT I HAVE OUTLINED ABOVE, YOU WILL SEE A T & I
NEXT TO EACH OTHER FOR A LOOP.
SOME EXCHANGES ARE SPECIAL. FOR EXAMPLE, 914-623 IS A TESTING BUREAU.
IN THIS EXCHANGE, NOT ONLY DID I FIND A LOOP, BUT I ALSO FOUND SEVERAL
INTERESTING TONES, NOISES, AND OTHER TEST FUNCTIONS. ALSO, THE MORE
IMPORTANT THE EXCHANGE IS, THE MORE YOU WILL FIND. FOR EXAMPLE, IN 914-623, I
FOUND WELL OVER 10 VOICE #'S!
ALSO, LOOPS ARE USUALLY, BUT NOT EXCLUSIVELY, FOUND IN THE 99XX SERIES.
FOR EXAMPLE:
(713) 324-1799/1499
IS A LOOP.
THE PERFECT LOOP? HERE IS WHAT I WOULD LOOK FOR:
1. NON-SUP ON ONE OR BOTH SIDES. TO CHECK FOR A NON-SUP LOOP, GO TO A
TONE-FIRST FORTRESS FONE AND DIAL THE #. IF IT ASKS FOR A DIME, IT
IS SUPERVISED. IF THE CALL GOES THROUGH, THEN IT IS NON-SUPED!
2. 800 LOOPS WOULD BE A PLUS. THEY ARE NOT NECESSARILY FOUND BETWEEN
9900 & 9999 THOUGH. I WOULD CHECK THE 1XXX SERIES FIRST.
3. MULTI-USER LOOPS ARE ALSO A PLUS FOR THOSE LATE NIGHT CONFERENCES.
FINALLY, REMEMBER IT IS ONLY A LOCAL CALL TO FIND OUT WHAT YOU CO HAS IN
STORE FOR YOU. IF YOU FIND ANYTHING INTERESTING, BE SURE TO DROP ME A LINE.
NOTE: YOUR LOCAL WHITE PAGES CAN BE A VALUABLE ASSET. YOU CAN ALSO ORDER
OTHER FONE BOOKS FROM YOUR BUSINESS OFFICE (USUALLY FREE FOR BOOKS
WITHIN YOUR OPERATING COMPANY'S DISTRICT). A LARGE FONE BOOK, SUCH
AS MANHATTAN, CONTAINS MUCH MORE INFO IN THE FIRST FEW PAGES THAN
OTHER BOOKS.
=====
=ANI=
=====
AUTOMATIC NUMBER IDENTIFICATION (ANI), IS A NUMBER THAT YOU CALL UP THAT
WILL TELL YOU WHAT # YOU ARE CALLING FROM.
THIS HAS A FEW USES. FIRST, WERE YOU EVER SOMEWHERE AND THE FONE DIDN'T
HAVE A # PRINTED ON IT? OR PERHAPS YOU WERE FOOLING AROUND IN SOME CANS
(THOSE LARGE BOXES ON FONE POLES THAT CONTAIN TERMINALS FOR LINEMAN USE--TO BE
DISCUSSES IN A FUTURE CHAPTER.) AND YOU WANT TO KNOW WHAT WHAT THE LINE # IS.
IN NPA 914, THE ANI IS 990. IN NPA'S 212 & 516, ANI IS 958. THIS VARIES
FROM AREA TO AREA.
HERE ARE SOME OTHER ANI'S THAT I HAVE SEEN:
890-751-5191
2022222222
1-XXX-1111 (IN SOME 914 AREAS, ESP. UNDER STEP-BY-STEP SWITCHING EQUIPMENT,
YOU HAVE TO DIAL 1-990-1111)
TO FIND ANI FOR OTHER AREAS, CHECK 3 DIGITS #'S FIRST, USUALLY IN THE 9XX
SERIES (EXCLUDING 911). IN AREAS UNDER STEP-BY-STEP (TO BE DISCUSSED IN THE
NEXT PART), TRY 1-9XX-1111.
ANI MAY ALSO BE IN 99XX. LAST RESORT, TRY TO GET FRIENDLY WITH YOUR
NEIGHBOR WHO WORKS FOR THE FONE COMPANY.
RINGBACK:
---------
RINGBACK, AS ITS NAME IMPLIES, CALLS BACK THE # YOU ARE AT WHEN YOU DIAL THE
RINGBACK #.
RINGBACK, IN NPA 914, IS 660. YOU DIAL 660+THE LAST 4 DIGITS OF THE FONE.
YOU WILL THEN GET A TONE, HANG-UP QUICKLY AND PICK-UP IN ABOUT 2 SECONDS. YOU
WILL THEN GET A SECOND TONE, HANG-UP AGAIN AND THE FONE WILL RING.
IN NYC, IT IS ALSO 660, BUT YOU MAY HAVE TO PRESS 6 OR 7 BEFORE YOU HANG UP
FOR THE FIRST TIME (IE, AT THE FIRST TONE).
OTHER RINGBACK #'S THAT I HAVE SEEN ARE:
26011 - THIS 5 DIGIT FORMAT IS USED PRIMARILY ON STEP-BY-STEP. THE LAST 2
DIGITS (11) ARE DUMMY DIGITS.
890-897-XXXX - XXXX ARE THE LAST 4 DIGITS OF THE FONE #.
119911/11911/1199911 - GTE
NNX-9906/9907 - NPA 301, NNX IS THE EXCHANGE
THE REASON YOU GET THE TONE WHEN YOU PICK-UP AFTER IT RINGS IS BECAUSE IN
SOME AREAS, PEOPLE WERE USING RINGBACK AS AN IN-HOUSE INTERCOM. THEY WOULD
DIAL RINGBACK, AND WHEN IT STOPPED RINGING, THEY WOULD PICK-UP & TALK WITH
THE PERSON WHO PICKED UP THE OTHER EXTENSION. BELL DIN'T LIKE THIS SINCE
THERE IS USUALLY ONLY 1 PIECE OF EQUIPMENT IN EACH EXCHANGE THAT DOES THE
RINGBACK. WHEN PEOPLE USED THIS AS AN INTERCOM, LINEMEN & REPAIRMEN COULN'T
GET THROUGH! IN SOME AREAS, ESPECIALLY THOSE UNDER STEP-BY-STEP, RINGBACK CAN
STILL BE USED AS AN INTERCOM. ALSO, UNDER STEP-BY-STEP, THE RINGBACK
PROCEDURE IT USUALLY SIMPLE. FOR EXAMPLE, IN ONE AREA YOU WOULD DIAL 26011
AND HANG-UP; IT WOULD THEN RINGBACK.
TOUCH-TONE TEST:
----------------
IN AREAS THAT HAVE A TOUCH-TONE TEST, YOU DIAL THE RINGBACK #. AT THE FIRST
TONE, YOU TOUCH-TONE DIGITS 1-0. IF THEY ARE CORRECT IT WILL BEEP TWICE.
I HAVE ALSO SEEN A TT TEST IN SOME AREAS AT: 890-751-5191
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