The old alt.2600 hack FAQ - telephony section.
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<title>alt.2600/#hack FAQ (Section B: Telephony)</title>
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<h1>Section B: Telephony</h1>
<h2>Table of Contents</h2>
<ol> <li> <a href="#b01">What is a Red Box?</a>
<li> <a href="#b02">How do I build a Red Box?</a>
<li> <a href="#b03"><em>Where can I get a 6.5536Mhz crystal?</em></a>
<li> <a href="#b04">Which payphones will a Red Box work on?</a>
<li> <a href="#b05">How do I make local calls with a Red Box?</a>
<li> <a href="#b06">What is a Blue Box?</a>
<li> <a href="#b07"><em>Do Blue Boxes still work?</em></a>
<li> <a href="#b08"><em>What is a Black Box?</em></a>
<li> <a href="#b09">What do all the colored boxes do?</a>
<li> <a href="#b10">What is an ANAC number?</a>
<li> <a href="#b11"><em>What is the ANAC number for my area?</em></a>
<li> <a href="#b12">What is a ringback number?</a>
<li> <a href="#b13"><em>What is the ringback number for my area?</em></a>
<li> <a href="#b14">What is a loop?</a>
<li> <a href="#b15"><em>What is a loop in my area?</em></a>
<li> <a href="#b16">What is a CNA number?</a>
<li> <a href="#b17"><em>What is the telephone company CNA number for my area?</em></a>
<li> <a href="#b18">What are some numbers that always ring busy?</a>
<li> <a href="#b19">What are some numbers that temporarily disconnect phone service?</a>
<li> <a href="#b20"><strong>What is a Proctor Test Set?</strong></a>
<li> <a href="#b21"><strong>What is a Proctor Test Set in my area?</strong></a>
<li> <a href="#b22">What is scanning?</a>
<li> <a href="#b23">Is scanning illegal?</a>
<li> <a href="#b24">Where can I purchase a lineman's handset?</a>
<li> <a href="#b25">What are the DTMF frequencies?</a>
<li> <a href="#b26"><em>What are the frequencies of the telephone tones?</em></a>
<li> <a href="#b27">What are all of the * codes?</a>
<li> <a href="#b28"><em>What frequencies do cordless phones operate on?</em></a>
<li> <a href="#b29">What is Caller-ID?</a>
<li> <a href="#b30"><strong>How do I block Caller-ID?</strong></a>
<li> <a href="#b31">What is a PBX?</a>
<li> <a href="#b32">What is a VMB?</a>
<li> <a href="#b33"><strong>What are the ABCD tones for?</strong></a> </ol>
<p>
(<em>Italic</em> indicates updated questions, while <strong>bold</strong>
indicates new questions.)
</p> <p> </p> <hr> <p>
<a name="b01">01. What is a Red Box?</a>
</p> <p>
When a coin is inserted into a payphone, the payphone emits a set of
tones to ACTS (Automated Coin Toll System). Red boxes work by fooling
ACTS into believing you have actually put money into the phone. The
red box simply plays the ACTS tones into the telephone microphone.
ACTS hears those tones, and allows you to place your call. The actual
tones are:
</p> <pre>
Nickel Signal 1700+2200 0.060s on
Dime Signal 1700+2200 0.060s on, 0.060s off, twice repeating
Quarter Signal 1700+2200 33ms on, 33ms off, 5 times repeating
</pre>
<p> </p> <hr> <p>
<a name="b02">02. How do I build a Red Box?</a>
</p> <p>
Red boxes are commonly manufactured from modified Radio Shack tone
dialers, Hallmark greeting cards, or made from scratch from readily
available electronic components.
</p> <p>
To make a Red Box from a Radio Shack 43-141 or 43-146 tone dialer,
open the dialer and replace the crystal with a new one.
The purpose of the new crystal is to cause the * button on your tone
dialer to create a 1700Mhz and 2200Mhz tone instead of the original
941Mhz and 1209Mhz tones. The exact value of the replacement crystal
should be 6.466806 to create a perfect 1700Mhz tone and 6.513698 to
create a perfect 2200mhz tone. A crystal close to those values will
create a tone that easily falls within the loose tolerances of ACTS.
The most popular choice is the 6.5536Mhz crystal, because it is the
eaiest to procure. The old crystal is the large shiny metal component
labeled "3.579545Mhz." When you are finished replacing the crystal,
program the P1 button with five *'s. That will simulate a quarter
tone each time you press P1.
</p> <p> </p> <hr> <p>
<a name="b03">03. Where can I get a 6.5536Mhz crystal?</a>
</p> <p>
Your best bet is a local electronics store. Radio Shack sells them,
but they are overpriced and the store must order them in. This takes
approximately two weeks. In addition, many Radio Shack employees do
not know that this can be done.
</p> <p>
Or, you could order the crystal mail order. This introduces Shipping
and Handling charges, which are usually much greater than the price of
the crystal. It's best to get several people together to share the
S&H cost. Or, buy five or six yourself and sell them later. Some of
the places you can order crystals are:
</p> <pre>
Digi-Key
701 Brooks Avenue South
P.O. Box 677
Thief River Falls, MN 56701-0677
(800)344-4539
Part Number:X415-ND /* Note: 6.500Mhz and only .197 x .433 x .149! */
Part Number:X018-ND
JDR Microdevices:
2233 Branham Lane
San Jose, CA 95124
(800)538-5000
Part Number: 6.5536MHZ
Tandy Express Order Marketing
401 NE 38th Street
Fort Worth, TX 76106
(800)241-8742
Part Number: 10068625
Alltronics
2300 Zanker Road
San Jose CA 95131
(408)943-9774 Voice
(408)943-9776 Fax
(408)943-0622 BBS
Part Number: 92A057
Mouser
(800)346-6873
Part Number: 332-1066
Blue Saguaro
P.O. Box 37061
Tucson, AZ 85740
Part Number: 1458b
Unicorn Electronics
10000 Canoga Ave, Unit c-2
Chatsworth, Ca 91311
Phone: 1-800-824-3432
Part Number: CR6.5
</pre>
<p> </p> <hr> <p>
<a name="b04">04. Which payphones will a Red Box work on?</a>
</p> <p>
Red Boxes will work on TelCo owned payphones, but not on COCOT's
(Customer Owned Coin Operated Telephones).
</p> <p> </p> <hr> <p>
<a name="b05">05. How do I make local calls with a Red Box?</a>
</p> <p>
Payphones do not use ACTS for local calls. To use your red box for
local calls, you have to fool ACTS into getting involved in the call.
</p> <p>
One way to do this, in some areas, is by dialing 10288-xxx-xxxx. This
makes your call a long distance call, and brings ACTS into the
picture.
</p> <p>
In other areas, you can call Directory Assistance and ask for the
number of the person you are trying to reach. The operator will give
you the number and then you will hear a message similar to "Your call
can be completed automatically for an additional 35 cents." When this
happens, you can then use ACTS tones.
</p> <p> </p> <hr> <p>
<a name="b06">06. What is a Blue Box?</a>
</p> <p>
Blue boxes use a 2600hz tone to size control of telephone switches
that use in-band signalling. The caller may then access special
switch functions, with the usual purpose of making free long distance
phone calls, using the tones provided by the Blue Box.
</p> <p> </p> <hr> <p>
<a name="b07">07. Do Blue Boxes still work?</a>
</p> <p>
This FAQ answer is excerpted from a message posted to Usenet by
Marauder of the Legion of Doom:
</p> <pre>
Somewhere along the line I have seen reference to something
similar to "Because of ESS Blue boxing is impossible". This is
incorrect. When I lived in Connecticut I was able to blue box
under Step by Step, #1AESS, and DMS-100. The reason is simple,
even though I was initiating my call to an 800 number from a
different exchange (Class 5 office, aka Central Office) in each
case, when the 800 call was routed to the toll network it would
route through the New Haven #5 Crossbar toll Tandem office. It
just so happens that the trunks between the class 5 (CO's) and
the class 4 (toll office, in this case New Haven #5 Xbar),
utilized in-band (MF) signalling, so regardless of what I
dialed, as long as it was an Inter-Lata call, my call would
route through this particular set of trunks, and I could Blue
box until I was blue in the face. The originating Central
Offices switch (SXS/ESS/Etc..) had little effect on my ability
to box at all. While the advent of ESS (and other electronic
switches) has made the blue boxers task a bit more difficult,
ESS is not the reason most of you are unable to blue box. The
main culprit is the "forward audio mute" feature of CCIS (out of
band signalling). Unfortunately for the boxer 99% of the Toll
Completion centers communicate using CCIS links, This spells
disaster for the blue boxer since most of you must dial out of
your local area to find trunks that utilize MF signalling, you
inevitably cross a portion of the network that is CCIS equipped,
you find an exchange that you blow 2600hz at, you are rewarded
with a nice "winkstart", and no matter what MF tones you send at
it, you meet with a re-order. This is because as soon as you
seized the trunk (your application of 2600hz), your Originating
Toll Office sees this as a loss of supervision at the
destination, and Mutes any further audio from being passed to
the destination (ie: your waiting trunk!). You meet with a
reorder because the waiting trunk never "hears" any of the MF
tones you are sending, and it times out. So for the clever
amongst you, you must somehow get yourself to the 1000's of
trunks out there that still utilize MF signalling but
bypass/disable the CCIS audio mute problem. (Hint: Take a close
look at WATS extenders).
</pre>
<p> </p> <hr> <p>
<a name="b08">08. What is a Black Box?</a>
</p> <p>
A Black Box is a resistor (and often capacitor in parallel) placed in
series across your phone line to cause the phone company equipment to be
unable to detect that you have answered your telephone. People who call
you will then not be billed for the telephone call. Black boxes do not
work under ESS.
</p> <p> </p> <hr> <p>
<a name="b09">09. What do all the colored boxes do?</a>
</p> <pre>
Acrylic Steal Three-Way-Calling, Call Waiting and programmable
Call Forwarding on old 4-wire phone systems
Aqua Drain the voltage of the FBI lock-in-trace/trap-trace
Beige Lineman's hand set
Black Allows the calling party to not be billed for the call
placed
Blast Phone microphone amplifier
Blotto Supposedly shorts every fone out in the immediate area
Blue Emulate a true operator by seizing a trunk with a 2600hz
tone
Brown Create a party line from 2 phone lines
Bud Tap into your neighbors phone line
Chartreuse Use the electricity from your phone line
Cheese Connect two phones to create a diverter
Chrome Manipulate Traffic Signals by Remote Control
Clear A telephone pickup coil and a small amp use to make free
calls on Fortress Phones
Color Line activated telephone recorder
Copper Cause crosstalk interference on an extender
Crimson Hold button
Dark Re-route outgoing or incoming calls to another phone
Dayglo Connect to your neighbors phone line
Divertor Re-route outgoing or incoming calls to another phone
DLOC Create a party line from 2 phone lines
Gold Dialout router
Green Emulate the Coin Collect, Coin Return, and Ringback tones
Infinity Remotely activated phone tap
Jack Touch-Tone key pad
Light In-use light
Lunch AM transmitter
Magenta Connect a remote phone line to another remote phone line
Mauve Phone tap without cutting into a line
Neon External microphone
Noise Create line noise
Olive External ringer
Party Create a party line from 2 phone lines
Pearl Tone generator
Pink Create a party line from 2 phone lines
Purple Telephone hold button
Rainbow Kill a trace by putting 120v into the phone line (joke)
Razz Tap into your neighbors phone
Red Make free phone calls from pay phones by generating quarter tones
Rock Add music to your phone line
Scarlet Cause a neighbors phone line to have poor reception
Silver Create the DTMF tones for A, B, C and D
Static Keep the voltage on a phone line high
Switch Add hold, indicator lights, conferencing, etc.
Tan Line activated telephone recorder
Tron Reverse the phase of power to your house, causing your
electric meter to run slower
TV Cable "See" sound waves on your TV
Urine Create a capacitative disturbance between the ring and
tip wires in another's telephone headset
Violet Keep a payphone from hanging up
White Portable DTMF keypad
Yellow Add an extension phone
</pre> <p>
Box schematics may be retrieved from these FTP sites:
</p> <pre>
<a href="ftp://ftp.netcom.com/pub/br/bradleym">ftp.netcom.com</a>
<a href="ftp://ftp.netcom.com/pub/va/vandal">ftp.netcom.com</a>
<a href="ftp://ftp.winternet.com/users/craigb">ftp.winternet.com</a>
</pre>
<p> </p> <hr> <p>
<a name="b10">10. What is an ANAC number?</a>
</p> <p>
An ANAC (Automatic Number Announcement Circuit) number is a telephone
number that plays back the number of the telephone that called it.
ANAC numbers are convenient if you want to know the telephone number
of a pair of wires.
</p> <p> </p> <hr> <p>
<a name="b11">11. What is the ANAC number for my area?</a>
</p> <p>
How to find your ANAC number:
</p> <p>
Look up your NPA (Area Code) and try the number listed for it. If that
fails, try 1 plus the number listed for it. If that fails, try the
common numbers like 311, 958 and 200-222-2222. If you find the ANAC
number for your area, please let us know.
</p> <p>
Note that many times the ANAC number will vary for different switches
in the same city. The geographic naming on the list is not intended
to be an accurate reference for coverage patterns, it is for
convenience only.
</p> <p>
Many companies operate 800 number services which will read back to you
the number from which you are calling. Many of these require
navigating a series of menus to get the phone number you are looking
for.
</p> <pre>
(800)238-4959 A voice mail system
(800)328-2630 A phone sex line
(800)568-3197 Info Access Telephone Company's Automated Blocking Line
(800)571-8859 A phone sex line
(800)692-6447 (800)MY-ANI-IS
(800)455-3256 Unknown
</pre> <p>
An non-800 ANAC that works nationwide is 404-988-9664. The one catch
with this number is that it must be dialed with the AT&T Carrier
Access Code 10732.
</p> <p>
Another non-800 nationwide ANAC is Glen Robert of Full Disclosure
Magazine's number, 10555-1-708-356-9646.
</p> <p>
Please use local ANAC numbers if you can, as abuse or overuse kills
800 ANAC numbers.
</p> <pre>
NPA ANAC number Geographic area
--- --------------- ---------------------------------------------
201 958 Hackensack/Jersey City/Newark/Paterson, NJ
202 811 District of Columbia
203 970 CT
205 300-222-2222 Birmingham, AL
205 300-555-5555 Many small towns in AL
205 300-648-1111 Dora, AL
205 300-765-4321 Bessemer, AL
205 300-798-1111 Forestdale, AL
205 300-833-3333 Birmingham
205 557-2311 Birmingham, AL
205 811 Pell City/Cropwell/Lincoln, AL
205 841-1111 Tarrant, AL
205 908-222-2222 Birmingham, AL
206 411 WA (Not US West)
207 958 ME
209 830-2121 Stockton, CA
209 211-9779 Stockton, CA
210 <strong>830</strong> Brownsville/Laredo/San Antonio, TX
212 958 Manhattan, NY
213 114 Los Angeles, CA (GTE)
213 1223 Los Angeles, CA (Some 1AESS switches)
213 211-2345 Los Angeles, CA (English response)
213 211-2346 Los Angeles, CA (DTMF response)
213 760-2??? Los Angeles, CA (DMS switches)
213 61056 Los Angeles, CA
214 570 Dallas, TX
214 790 Dallas, TX (GTE)
214 970-222-2222 Dallas, TX
214 970-611-1111 Dallas, TX (Southwestern Bell)
215 410-xxxx Philadelphia, PA
215 511 Philadelphia, PA
215 958 Philadelphia, PA
216 <strong>200-XXXX</strong> Akron/Canton/Cleveland/Lorain/Youngstown, OH
216 331 Akron/Canton/Cleveland/Lorain/Youngstown, OH
216 959-9892 Akron/Canton/Cleveland/Lorain/Youngstown, OH
217 200-xxx-xxxx Champaign-Urbana/Springfield, IL
219 550 Gary/Hammond/Michigan City/Southbend, IN
219 559 Gary/Hammond/Michigan City/Southbend, IN
301 958-9968 Hagerstown/Rockville, MD
310 114 Long Beach, CA (On many GTE switches)
310 1223 Long Beach, CA (Some 1AESS switches)
310 211-2345 Long Beach, CA (English response)
310 211-2346 Long Beach, CA (DTMF response)
312 200 Chicago, IL
312 290 Chicago, IL
312 1-200-8825 Chicago, IL (Last four change rapidly)
312 1-200-555-1212 Chicago, IL
313 200-200-2002 Ann Arbor/Dearborn/Detroit, MI
313 200-222-2222 Ann Arbor/Dearborn/Detroit, MI
313 200-xxx-xxxx Ann Arbor/Dearborn/Detroit, MI
313 200200200200200 Ann Arbor/Dearborn/Detroit, MI
314 410-xxxx# Columbia/Jefferson City/St.Louis, MO
315 953 Syracuse/Utica, NY
315 958 Syracuse/Utica, NY
315 998 Syracuse/Utica, NY
317 310-222-2222 Indianapolis/Kokomo, IN
317 559-222-2222 Indianapolis/Kokomo, IN
317 743-1218 Indianapolis/Kokomo, IN
334 <strong>5572411</strong> Montgomery, AL
334 <strong>5572311</strong> Montgomery, AL
401 200-200-4444 RI
401 222-2222 RI
402 311 Lincoln, NE
404 311 Atlanta, GA
404 940-xxx-xxxx Atlanta, GA
404 990 Atlanta, GA
405 890-7777777 Enid/Oklahoma City, OK
405 897 Enid/Oklahoma City, OK
407 200-222-2222 Orlando/West Palm Beach, FL
408 300-xxx-xxxx San Jose, CA
408 760 San Jose, CA
408 940 San Jose, CA
409 951 Beaumont/Galveston, TX
409 970-xxxx Beaumont/Galveston, TX
410 200-6969 Annapolis/Baltimore, MD
410 200-555-1212 Annapolis/Baltimore, MD
410 811 Annapolis/Baltimore, MD
412 711-6633 Pittsburgh, PA
412 711-4411 Pittsburgh, PA
412 999-xxxx Pittsburgh, PA
413 958 Pittsfield/Springfield, MA
413 200-555-5555 Pittsfield/Springfield, MA
414 330-2234 Fond du Lac/Green Bay/Milwaukee/Racine, WI
415 200-555-1212 San Francisco, CA
415 211-2111 San Francisco, CA
415 2222 San Francisco, CA
415 640 San Francisco, CA
415 760-2878 San Francisco, CA
415 7600-2222 San Francisco, CA
419 311 Toledo, OH
502 2002222222 Frankfort/Louisville/Paducah/Shelbyville, KY
502 997-555-1212 Frankfort/Louisville/Paducah/Shelbyville, KY
503 611 Portland, OR
503 999 Portland, OR (GTE)
504 99882233 Baton Rouge/New Orleans, LA
504 201-269-1111 Baton Rouge/New Orleans, LA
504 998 Baton Rouge/New Orleans, LA
504 99851-0000000000 Baton Rouge/New Orleans, LA
508 958 Fall River/New Bedford/Worchester, MA
508 200-222-1234 Fall River/New Bedford/Worchester, MA
508 200-222-2222 Fall River/New Bedford/Worchester, MA
508 26011 Fall River/New Bedford/Worchester, MA
509 560 Spokane/Walla Walla/Yakima, WA
510 <strong>760-1111</strong> Oakland, CA
512 830 Austin/Corpus Christi, TX
512 970-xxxx Austin/Corpus Christi, TX
515 5463 Des Moines, IA
515 811 Des Moines, IA
516 958 Hempstead/Long Island, NY
516 968 Hempstead/Long Island, NY
517 200-222-2222 Bay City/Jackson/Lansing, MI
517 200200200200200 Bay City/Jackson/Lansing, MI
518 <strong>511</strong> Albany/Schenectady/Troy, NY
518 997 Albany/Schenectady/Troy, NY
518 998 Albany/Schenectady/Troy, NY
603 200-222-2222 NH
606 997-555-1212 Ashland/Winchester, KY
606 711 Ashland/Winchester, KY
607 993 Binghamton/Elmira, NY
609 958 Atlantic City/Camden/Trenton/Vineland, NJ
610 958 Allentown/Reading, PA
610 <strong>958-4100</strong> Allentown/Reading, PA
612 511 Minneapolis/St.Paul, MN
614 200 Columbus/Steubenville, OH
614 571 Columbus/Steubenville, OH
615 200200200200200 Chatanooga/Knoxville/Nashville, TN
615 2002222222 Chatanooga/Knoxville/Nashville, TN
615 830 Nashville, TN
616 200-222-2222 Battle Creek/Grand Rapids/Kalamazoo, MI
617 200-222-1234 Boston, MA
617 200-222-2222 Boston, MA
617 200-444-4444 Boston, MA (Woburn, MA)
617 220-2622 Boston, MA
617 958 Boston, MA
618 200-xxx-xxxx Alton/Cairo/Mt.Vernon, IL
618 930 Alton/Cairo/Mt.Vernon, IL
619 211-2001 San Diego, CA
619 <strong>211-2121</strong> San Diego, CA
703 811 Alexandria/Arlington/Roanoke, VA
704 311 Asheville/Charlotte, NC
707 <strong>211-2222</strong> Eureka, CA
708 1-200-555-1212 Chicago/Elgin, IL
708 1-200-8825 Chicago/Elgin, IL (Last four change rapidly)
708 200-6153 Chicago/Elgin, IL
708 724-9951 Chicago/Elgin, IL
708 356-9646 Chicago/Elgin, IL
713 380 Houston, TX
713 970-xxxx Houston, TX
713 811 Humble, TX
714 114 Anaheim, CA (GTE)
714 211-2121 Anaheim, CA (PacBell)
714 211-2222 Anaheim, CA (Pacbell)
716 511 Buffalo/Niagara Falls/Rochester, NY (Rochester Tel)
716 990 Buffalo/Niagara Falls/Rochester, NY (Rochester Tel)
717 958 Harrisburg/Scranton/Wilkes-Barre, PA
718 958 Bronx/Brooklyn/Queens/Staten Island, NY
802 2-222-222-2222 Vermont
802 200-222-2222 Vermont
802 1-700-222-2222 Vermont
802 111-2222 Vermont
805 114 Bakersfield/Santa Barbara, CA
805 211-2345 Bakersfield/Santa Barbara, CA
805 211-2346 Bakersfield/Santa Barbara, CA (Returns DTMF)
805 830 Bakersfield/Santa Barbara, CA
806 970-xxxx Amarillo/Lubbock, TX
810 200200200200200 Flint/Pontiac/Southfield/Troy, MI
812 410-555-1212 Evansville, IN
813 311 Ft. Meyers/St. Petersburg/Tampa, FL
815 200-xxx-xxxx La Salle/Rockford, IL
815 290 La Salle/Rockford, IL
817 211 Ft. Worth/Waco, TX
817 970-611-1111 Ft. Worth/Waco, TX (Southwestern Bell)
818 1223 Pasadena, CA (Some 1AESS switches)
818 211-2345 Pasadena, CA (English response)
818 211-2346 Pasadena, CA (DTMF response)
903 970-611-1111 Tyler, TX
904 <strong>200-222-222</strong> Jackonsville/Pensacola/Tallahasee, FL
906 1-200-222-2222 Marquette/Sault Ste. Marie, MI
907 <strong>811</strong> AK (All)
908 958 New Brunswick, NJ
910 200 Fayetteville/Greensboro/Raleigh/Winston-Salem, NC
910 311 Fayetteville/Greensboro/Raleigh/Winston-Salem, NC
910 988 Fayetteville/Greensboro/Raleigh/Winston-Salem, NC
914 990-1111 Peekskill/Poughkeepsie/White Plains/Yonkers, NY
915 970-xxxx Abilene/El Paso, TX
916 211-2222 Sacramento, CA (Pac Bell)
916 461 Sacramento, CA (Roseville Telepohone)
919 200 Durham, NC
919 711 Durham, NC
Canada:
204 644-4444 Manitoba
306 115 Saskatchewan, Canada
403 311 Alberta, Yukon and N.W. Territory
403 908-222-2222 Alberta, Yukon and N.W. Territory
403 999 Alberta, Yukon and N.W. Territory
416 997-xxxx Toronto, Ontario
506 1-555-1313 New Brunswick
514 320-xxxx Montreal, Quebec
519 320-xxxx London, Ontario
604 1116 British Columbia, Canada
604 1211 British Columbia, Canada
604 211 British Columbia, Canada
613 320-2232 Ottawa, Ontario
705 320-4567 North Bay/Saulte Ste. Marie, Ontario
Australia:
+61 03-552-4111 Victoria 03 area
+612 19123 All major capital cities
+612 <strong>11544</strong>
United Kingdom:
175
Israel:
<strong>110</strong>
</pre>
(<em>Italic</em> indicates updated ANAC's, while <strong>bold</strong>
indicates new ANAC's.)
<p> </p> <hr> <p>
<a name="b12">12. What is a ringback number?</a>
</p> <p>
A ringback number is a number that you call that will immediately
ring the telephone from which it was called.
</p> <p>
In most instances you must call the ringback number, quickly hang up
the phone for just a short moment and then let up on the switch, you
will then go back off hook and hear a different tone. You may then
hang up. You will be called back seconds later.
</p> <p> </p> <hr> <p>
<a name="b13">13. What is the ringback number for my area?</a>
</p> <p>
An 'x' means insert those numbers from the phone number from which you
are calling. A '?' means that the number varies from switch to switch
in the area, or changes from time to time. Try all possible
combinations.
</p> <p>
If the ringback for your NPA is not listed, try common ones such as
951-xxx-xxxx, 954, 957 and 958. Also, try using the numbers listed for
other NPA's served by your telephone company.
</p> <p>
Note: These geographic areas are for reference purposes only. Ringback
numbers may vary from switch to switch within the same city.
</p> <pre>
NPA Ringback number Approximate Geographic area
--- --------------- ---------------------------------------------
201 55?-xxxx Hackensack/Jersey City/Newark/Paterson, NJ
202 958-xxxx District of Columbia
203 99?-xxxx CT
206 <strong>571-xxxx</strong> WA
208 99xxx-xxxx ID
213 1-95x-xxxx Los Angeles, CA
215 <strong>811-xxxx</strong> Philadelphia, PA
216 551-xxxx Akron/Canton/Cleveland/Lorain/Youngstown, OH
219 571-xxx-xxxx Gary/Hammond/Michigan City/Southbend, IN
219 777-xxx-xxxx Gary/Hammond/Michigan City/Southbend, IN
301 579-xxxx Hagerstown/Rockville, MD
301 958-xxxx Hagerstown/Rockville, MD
303 99X-xxxx Grand Junction, CO
304 998-xxxx WV
305 999-xxxx Ft. Lauderdale/Key West/Miami, FL
312 511-xxxx Chicago, IL
312 511-xxx-xxxx Chicago, IL
312 57?-xxxx Chicago, IL
315 98x-xxxx Syracuse/Utica, NY
317 777-xxxx Indianapolis/Kokomo, IN
317 yyy-xxxx Indianapolis/Kokomo, IN (y=3rd digit of phone number)
319 79x-xxxx Davenport/Dubuque, Iowa
334 <strong>901-xxxx</strong> Montgomery, AL
401 98?-xxxx RI
404 450-xxxx Atlanta, GA
407 988-xxxx Orlando/West Palm Beach, FL
412 985-xxxx Pittsburgh, PA
414 977-xxxx Fond du Lac/Green Bay/Milwaukee/Racine, WI
414 978-xxxx Fond du Lac/Green Bay/Milwaukee/Racine, WI
415 350-xxxx San Francisco, CA
417 551-xxxx Joplin/Springfield, MO
501 221-xxx-xxxx AR
501 721-xxx-xxxx AR
502 988 Frankfort/Louisville/Paducah/Shelbyville, KY
503 541-XXXX OR
504 99x-xxxx Baton Rouge/New Orleans, LA
504 9988776655 Baton Rouge/New Orleans, LA
505 59?-xxxx New Mexico
512 95X-xxxx Austin, TX
513 <em>951-xxxx</em> Cincinnati/Dayton, OH
513 955-xxxx Cincinnati/Dayton, OH
513 <em>99?-xxxx</em> Cincinnati/Dayton, OH (X=0, 1, 2, 3, 4, 8 or 9)
516 660-xxx-xxxx Hempstead/Long Island, NY
601 777-xxxx MS
609 55?-xxxx Atlantic City/Camden/Trenton/Vineland, NJ
610 <strong>811-xxxx</strong> Allentown/Reading, PA
612 511 Minneapolis/St.Paul, MN
612 999-xxx-xxxx Minneapolis/St.Paul, MN
614 998-xxxx Columbus/Steubenville, OH
615 <strong>920-XXXX</strong> Chatanooga/Knoxville/Nashville, TN
615 930-xxxx Chatanooga/Knoxville/Nashville, TN
616 946-xxxx Battle Creek/Grand Rapids/Kalamazoo, MI
619 331-xxxx San Diego, CA
619 332-xxxx San Diego, CA
703 958-xxxx Alexandria/Arlington/Roanoke, VA
708 511-xxxx Chicago/Elgin, IL
714 330? Anaheim, CA (GTE)
714 33?-xxxx Anaheim, CA (PacBell)
716 981-xxxx Rochester, NY (Rochester Tel)
718 660-xxxx Bronx/Brooklyn/Queens/Staten Island, NY
719 99x-xxxx Colorado Springs/Leadville/Pueblo, CO
801 938-xxxx Utah
801 939-xxxx Utah
802 987-xxxx Vermont
804 260 Charlottesville/Newport News/Norfolk/Richmond, VA
805 114 Bakersfield/Santa Barbara, CA
805 980-xxxx Bakersfield/Santa Barbara, CA
810 951-xxx-xxxx Pontiac/Southfield/Troy, MI
813 711 Ft. Meyers/St. Petersburg/Tampa, FL
817 971 Ft. Worth/Waco, TX (Flashhook, then 2#)
906 951-xxx-xxxx Marquette/Sault Ste. Marie, MI
908 55?-xxxx New Brunswick, NJ
908 953 New Brunswick, NJ
913 951-xxxx Lawrence/Salina/Topeka, KS
914 <em>660-xxxx-xxxx</em> Peekskill/Poughkeepsie/White Plains/Yonkers, NY
Canada:
204 <strong>590-xxx-xxxx</strong> Manitoba
416 57x-xxxx Toronto, Ontario
416 99x-xxxx Toronto, Ontario
416 999-xxx-xxxx Toronto, Ontario
506 572+xxx-xxxx New Brunswick
514 320-xxx-xxxx Montreal, Quebec
519 <strong>999-xxx-xxxx</strong> London, Ontario
613 999-xxx-xxxx Ottawa, Ontario
705 999-xxx-xxxx North Bay/Saulte Ste. Marie, Ontario
Australia: +61 199
Brazil: 109 or 199
Holland: <strong>99-xxxxxx</strong>
New Zealand: 137
Sweden: 0058
United Kingdom: 174 or 1744 or 175 or 0500-89-0011
</pre>
(<em>Italic</em> indicates updated ringbacks, while <strong>bold</strong>
indicates new ringbacks.)
<p> </p> <hr> <p>
<a name="b14">14. What is a loop?</a>
</p> <p>
This FAQ answer is excerpted from: <em>ToneLoc v0.99 User Manual</em> by Minor
Threat & Mucho Maas
</p> <p>
Loops are a pair of phone numbers, usually consecutive, like 836-9998
and 836-9999. They are used by the phone company for testing. What
good do loops do us? Well, they are cool in a few ways. Here is a
simple use of loops. Each loop has two ends, a 'high' end, and a
'low' end. One end gives a (usually) constant, loud tone when it is
called. The other end is silent. Loops don't usually ring either.
When BOTH ends are called, the people that called each end can talk
through the loop. Some loops are voice filtered and won't pass
anything but a constant tone; these aren't much use to you. Here's
what you can use working loops for: billing phone calls! First, call
the end that gives the loud tone. Then if the operator or someone
calls the other end, the tone will go quiet. Act like the phone just
rang and you answered it ... say "Hello", "Allo", "Chow", "Yo", or
what the fuck ever. The operator thinks that she just called you, and
that's it! Now the phone bill will go to the loop, and your local
RBOC will get the bill! Use this technique in moderation, or the loop
may go down. Loops are probably most useful when you want to talk to
someone to whom you don't want to give your phone number.
</p> <p> </p> <hr> <p>
<a name="b15">15. What is a loop in my area?</a>
</p> <p>
Many of these loops are no longer functional. If you are local
to any of these loops, please try them out an e-mail me the results
of your research.
</p> <pre>
NPA High Low
--- -------- --------
201 <em>666-9929 666-9930</em>
206 827-0018 827-0019
206 988-0020 988-0022
208 862-9996 862-9997
209 732-0044 732-0045
201 666-9929 666-9930
210 993-9929 993-9930
210 330-9929 330-9930
210 333-9929 333-9930
210 376-9929 376-9930
210 467-9929 467-9930
212 220-9977 220-9979
212 283-9977 283-9979
212 283-9977 283-9997
212 352-9900 352-9906
212 365-9977 365-9979
212 529-9900 529-9906
212 562-9977 562-9979
212 986-9977 986-9979
213 360-1118 360-1119
213 365-1118 365-1119
213 455-0002 455-XXXX
213 455-0002 455-xxxx
213 546-0002 546-XXXX
213 546-0002 546-xxxx
213 549-1118 549-1119
305 778-9952 778-9951
305 964-9951 964-9952
307 468-9999 468-9998
308 357-0004 357-0005
310 365-1118 365-1119
310 445-0002 445-????
310 455-0002 455-????
310 545-0002 545-????
310 546-0002 546-????
312 262-9902 262-9903
313 224-9996 224-9997
313 225-9996 225-9997
313 234-9996 234-9997
313 237-9996 237-9997
313 256-9996 256-9997
313 272-9996 272-9997
313 273-9996 273-9997
313 277-9996 277-9997
313 281-9996 281-9997
313 292-9996 292-9997
313 299-9996 299-9997
313 321-9996 321-9997
313 326-9996 326-9997
313 356-9996 356-9997
313 362-9996 362-9997
313 369-9996 369-9997
313 388-9996 388-9997
313 397-9996 397-9997
313 399-9996 399-9997
313 445-9996 445-9997
313 465-9996 465-9997
313 471-9996 471-9997
313 474-9996 474-9997
313 477-9996 477-9997
313 478-9996 478-9997
313 483-9996 483-9997
313 497-9996 497-9997
313 526-9996 526-9997
313 552-9996 552-9997
313 556-9996 556-9997
313 561-9996 561-9997
313 569-9996 569-9996
313 575-9996 575-9997
313 577-9996 577-9997
313 585-9996 585-9997
313 591-9996 591-9997
313 621-9996 621-9997
313 626-9996 626-9997
313 644-9996 644-9997
313 646-9996 646-9997
313 647-9996 647-9997
313 649-9996 649-9997
313 663-9996 663-9997
313 665-9996 665-9997
313 683-9996 683-9997
313 721-9996 721-9997
313 722-9996 722-9997
313 728-9996 728-9997
313 731-9996 731-9997
313 751-9996 751-9997
313 776-9996 776-9997
313 781-9996 781-9997
313 787-9996 787-9997
313 822-9996 822-9997
313 833-9996 833-9997
313 851-9996 851-9997
313 871-9996 871-9997
313 875-9996 875-9997
313 886-9996 886-9997
313 888-9996 888-9997
313 898-9996 898-9997
313 934-9996 934-9997
313 942-9996 942-9997
313 963-9996 963-9997
313 977-9996 977-9997
315 673-9995 673-9996
315 695-9995 695-9996
402 422-0001 422-0002
402 422-0003 422-0004
402 422-0005 422-0006
402 422-0007 422-0008
402 572-0003 572-0004
402 779-0004 779-0007
406 225-9902 225-9903
517 422-9996 422-9997
517 423-9996 423-9997
517 455-9996 455-9997
517 563-9996 563-9997
517 663-9996 663-9997
517 851-9996 851-9997
609 921-9929 921-9930
609 994-9929 994-9930
616 997-9996 997-9997
708 724-9951 724-????
713 224-1499 759-1799
713 324-1499 324-1799
713 342-1499 342-1799
713 351-1499 351-1799
713 354-1499 354-1799
713 356-1499 356-1799
713 442-1499 442-1799
713 447-1499 447-1799
713 455-1499 455-1799
713 458-1499 458-1799
713 462-1499 462-1799
713 466-1499 466-1799
713 468-1499 468-1799
713 469-1499 469-1799
713 471-1499 471-1799
713 481-1499 481-1799
713 482-1499 482-1799
713 484-1499 484-1799
713 487-1499 487-1799
713 489-1499 489-1799
713 492-1499 492-1799
713 493-1499 493-1799
713 524-1499 524-1799
713 526-1499 526-1799
713 555-1499 555-1799
713 661-1499 661-1799
713 664-1499 664-1799
713 665-1499 665-1799
713 666-1499 666-1799
713 667-1499 667-1799
713 682-1499 976-1799
713 771-1499 771-1799
713 780-1499 780-1799
713 781-1499 997-1799
713 960-1499 960-1799
713 977-1499 977-1799
713 988-1499 988-1799
805 528-0044 528-0045
805 544-0044 544-0045
805 773-0044 773-0045
808 235-9907 235-9908
808 239-9907 239-9908
808 245-9907 245-9908
808 247-9907 247-9908
808 261-9907 261-9908
808 322-9907 322-9908
808 328-9907 328-9908
808 329-9907 329-9908
808 332-9907 332-9908
808 335-9907 335-9908
808 572-9907 572-9908
808 623-9907 623-9908
808 624-9907 624-9908
808 668-9907 668-9908
808 742-9907 742-9908
808 879-9907 879-9908
808 882-9907 882-9908
808 885-9907 885-9908
808 959-9907 959-9908
808 961-9907 961-9908
810 362-9996 362-9997
813 385-9971 385-xxxx
908 254-9929 254-9930
908 558-9929 558-9930
908 560-9929 560-9930
908 776-9930 776-9930
</pre>
(<em>Italic</em> indicates updated loops, while <strong>bold</strong>
indicates new loops.)
<p> </p> <hr> <p>
<a name="b16">16. What is a CNA number?</a>
</p> <p>
CNA stands for Customer Name and Address. The CNA number is a phone
number for telephone company personnel to call and get the name and
address for a phone number. If a telephone lineman finds a phone line
he does not recognize, he can use the ANI number to find it's phone
number and then call the CNA operator to see who owns it and where
they live.
</p> <p>
Normal CNA numbers are available only to telephone company personnel.
Private citizens may now legally get CNA information from private
companies. Two such companies are:
</p> <pre>
Unidirectory (900)933-3330
Telename (900)884-1212
</pre> <p>
Note that these are 900 numbers, and will cost you approximately one
dollar per minute.
</p> <p>
If you are in 312 or 708, AmeriTech has a pay-for-play CNA service
available to the general public. The number is 796-9600. The cost is
$.35/call and can look up two numbers per call.
</p> <p>
If you are in 415, Pacific Bell offers a public access CNA service at
(415)781-5271.
</p> <p> </p> <hr> <p>
<a name="b17">17. What is the telephone company CNA number for my area?</a>
</p> <pre>
203 (203)771-8080 CT
312 <strong>(312)796-9600</strong> Chicago, IL
506 <strong>(506)555-1313</strong> New Brunswick
513 (513)397-9110 Cincinnati/Dayton, OH
516 (516)321-5700 Hempstead/Long Island, NY
518 (518)471-8111 Albany/Schenectady/Troy, NY
614 (614)464-0123 Columbus/Steubenville, OH
813 (813)270-8711 Ft. Meyers/St. Petersburg/Tampa, FL
</pre>
(<em>Italic</em> indicates updated CNA's, while <strong>bold</strong>
indicates new CNA's.)
<p> </p> <hr> <p>
<a name="b18">18. What are some numbers that always ring busy?</a>
</p> <pre>
216 xxx-9887 Akron/Canton/Cleveland/Lorain/Youngstown, OH
303 431-0000 Denver, CO
303 866-8660 Denver, CO
316 952-7265 Dodge City/Wichita, KS
501 377-99xx AR
719 472-3773 Colorado Springs/Leadville/Pueblo, CO
805 255-0699 Bakersfield/Santa Barbara, CA
818 885-0699 Pasadena, CA
906 632-9999 Marquette/Sault Ste. Marie, MI
906 635-9999 Marquette/Sault Ste. Marie, MI
914 576-9903 Peekskill/Poughkeepsie/White Plains/Yonkers, NY
</pre>
<p> </p> <hr> <p>
<a name="b19">19. What are some numbers that temporarily disconnect phone service?</a>
</p> <pre>
314 511 Columbia/Jefferson City/St.Louis, MO (1 minute)
404 420 Atlanta, GA (5 minutes)
405 953 Enid/Oklahoma City, OK (1 minute)
407 511 Orlando/West Palm Beach, FL (1 minute)
512 200 Austin/Corpus Christi, TX (1 minute)
516 480 Hempstead/Long Island, NY (1 minute)
603 980 NH
614 xxx-9894 Columbus/Steubenville, OH
805 119 Bakersfield/Santa Barbara, CA (3 minutes)
919 211 or 511 Durham, NC (10 min - 1 hour)
</pre>
<p> </p> <hr> <p>
<a name="b20">20. What is a Proctor Test Set?</a>
</p> <p>
A Proctor Test Set is a tool used by telco personell to diagnose problems
with phone lines. You call the Proctor Test Set number and press buttons
on a touch tone phone to active the tests you select.
</p> <p> </p> <hr> <p>
<a name="b21">21. What is a Proctor Test Set in my area?</a>
</p> <pre>
805 111 Bakersfield/Santa Barbara, CA
909 117 Tyler, TX
913 611-1111 Lawrence/Salina/Topeka, KS
</pre>
<p> </p> <hr> <p>
<a name="b22">22. What is scanning?</a>
</p> <p>
Scanning is dialing a large number of telephone numbers in the hope
of finding interesting carriers (computers) or tones.
</p> <p>
Scanning can be done by hand, although dialing several thousand
telephone numbers by hand is extremely boring and takes a long time.
</p> <p>
Much better is to use a scanning program, sometimes called a war
dialer or a demon dialer. Currently, the best war dialer available to
PC-DOS users is ToneLoc from Minor Threat and Mucho Maas. ToneLoc can
be FTPed from <a href="ftp://ftp.paranoia.com/pub/toneloc">ftp.paranoia.com</a>.
</p> <p>
A war dialer will dial a range of numbers and log what it finds at
each number. You can then only dial up the numbers that the war
dialer marked as carriers or tones.
</p> <p> </p> <hr> <p>
<a name="b23">23. Is scanning illegal?</a>
</p> <p>
Excerpt from: <em>2600</em>, Spring 1990, Page 27:
</p> <pre>
In some places, scanning has been made illegal. It would be hard,
though, for someone to file a complaint against you for scanning since
the whole purpose is to call every number once and only once. It's
not likely to be thought of as harassment by anyone who gets a single
phone call from a scanning computer. Some central offices have been
known to react strangely when people start scanning. Sometimes you're
unable to get a dialtone for hours after you start scanning. But
there is no uniform policy. The best thing to do is to first find out
if you've got some crazy law saying you can't do it. If, as is
likely, there is no such law, the only way to find out what happens is
to give it a try.
</pre> <p>
It should be noted that a law making scanning illegal was recently
passed in Colorado Springs, CO. It is now illegal to place a call
in Colorado Springs without the intent to communicate.
</p> <p> </p> <hr> <p>
<a name="b24">24. Where can I purchase a lineman's handset?</a>
</p> <pre>
Contact East
335 Willow Street
North Andover, MA 01845-5995
(508)682-2000
Jensen Tools
7815 S. 46th Street
Phoenix, AZ 85044-5399
Time Motion Tools
12778 Brookprinter Place
Poway, CA 92064
(619)679-0303
</pre>
<p> </p> <hr> <p>
<a name="b25">25. What are the DTMF frequencies?</a>
</p> <p>
DTMF stands for Dual Tone Multi Frequency. These are the tones you
get when you press a key on your telephone touchpad. The tone of the
button is the sum of the column and row tones. The ABCD keys do not
exist on standard telephones.
</p> <pre>
1209 1336 1477 1633
697 1 2 3 A
770 4 5 6 B
852 7 8 9 C
941 * 0 # D
</pre>
<p> </p> <hr> <p>
<a name="b26">26. What are the frequencies of the telephone tones?</a>
</p> <pre>
Type Hz On Off
---------------------------------------------------------------------
Dial Tone 350 & 440 --- ---
Busy Signal 480 & 620 0.5 0.5
Toll Congestion 480 & 620 0.2 0.3
Ringback (Normal) 440 & 480 2.0 4.0
Ringback (PBX) 440 & 480 1.5 4.5
Reorder (Local) 480 & 620 3.0 2.0
Invalid Number 200 & 400
Hang Up Warning 1400 & 2060 0.1 0.1
Hang Up 2450 & 2600 --- ---
</pre>
<p> </p> <hr> <p>
<a name="b27">27. What are all of the * codes?</a>
</p> <p>
Local Area Signalling Services (LASS) and Custom Calling Feature
Control Codes:
</p> <p>
(These appear to be standard, but may be changed locally)
</p> <pre>
Service Tone Pulse/rotary Notes
--------------------------------------------------------------------------
Assistance/Police *12 n/a [1]
Cancel forwarding *30 n/a [C1]
Automatic Forwarding *31 n/a [C1]
Notify *32 n/a [C1] [2]
Intercom Ring 1 (..) *51 1151 [3]
Intercom Ring 2 (.._) *52 1152 [3]
Intercom Ring 3 (._.) *53 1153 [3]
Extension Hold *54 1154 [3]
Customer Originated Trace *57 1157
Selective Call Rejection *60 1160 (or Call Screen)
Selective Distinct Alert *61 1161
Selective Call Acceptance *62 1162
Selective Call Forwarding *63 1163
ICLID Activation *65 1165
Call Return (outgoing) *66 1166
Number Display Blocking *67 1167 [4]
Computer Access Restriction *68 1168
Call Return (incoming) *69 1169
Call Waiting disable *70 1170 [4]
No Answer Call Transfer *71 1171
Usage Sensitive 3 way call *71 1171
Call Forwarding: start *72 or 72# 1172
Call Forwarding: cancel *73 or 73# 1173
Speed Calling (8 numbers) *74 or 74# 1174
Speed Calling (30 numbers) *75 or 75# 1175
Anonymous Call Rejection *77 1177 [5] [M: *58]
Call Screen Disable *80 1160 (or Call Screen) [M: *50]
Selective Distinct Disable *81 1161 [M: *51]
Select. Acceptance Disable *82 1162
Select. Forwarding Disable *83 1163 [M: *53]
ICLID Disable *85 1165
Call Return (cancel out) *86 1186 [6] [M: *56]
Anon. Call Reject (cancel) *87 1187 [5] [M: *68]
Call Return (cancel in) *89 1189 [6] [M: *59]
Notes:
[C1] - Means code used for Cellular One service
[1] - for cellular in Pittsburgh, PA A/C 412 in some areas
[2] - indicates that you are not local and maybe how to reach you
[3] - found in Pac Bell territory; Intercom ring causes a distinctive
ring to be generated on the current line; Hold keeps a call
connected until another extension is picked up
[4] - applied once before each call
[5] - A.C.R. blocks calls from those who blocked Caller ID
(used in C&P territory, for instance)
[6] - cancels further return attempts
[M: *xx] - alternate code used for MLVP (multi-line variety package)
by Bellcore. It goes by different names in different RBOCs.
In Bellsouth it is called Prestige. It is an arrangement of
ESSEX like features for single or small multiple line groups.
The reason for different codes for some features in MLVP is that
call-pickup is *8 in MLVP so all *8x codes are reaasigned *5x
</pre>
<p> </p> <hr> <p>
<a name="b28">28. What frequencies do cordless phones operate on?</a>
</p> <p>
Here are the frequencies for the first generation 46/49mhz phones.
</p> <pre>
Channel Handset Transmit Base Transmit
------- ---------------- -------------
1 49.670mhz 46.610mhz
2 49.845 46.630
3 49.860 46.670
4 49.770 46.710
5 49.875 46.730
6 49.830 46.770
7 49.890 46.830
8 49.930 46.870
9 49.990 46.930
10 49.970 46.970
</pre> <p>
The new "900mhz" cordless phones have been allocated the frequencies
between 902-228MHz, with channel spacing between 30-100KHz.
</p> <p>
Following are some examples of the frequencies used by phones
currently on the market.
</p> <pre>
Panasonic KX-T9000 (60 Channels)
base 902.100 - 903.870 Base frequencies (30Khz spacing)
handset 926.100 - 927.870 Handset frequencies
CH BASE HANDSET CH BASE HANDSET CH BASE HANDSET
-- ------- ------- -- ------- ------- -- ------- -------
01 902.100 926.100 11 902.400 926.400 21 902.700 926.700
02 902.130 926.130 12 902.430 926.430 22 902.730 926.730
03 902.160 926.160 13 902.460 926.460 23 902.760 926.760
04 902.190 926.190 14 902.490 926.490 24 902.790 926.790
05 902.220 926.220 15 902.520 926.520 25 902.820 926.820
06 902.250 926.250 16 902.550 926.550 26 902.850 926.850
07 902.280 926.280 17 902.580 926.580 27 902.880 926.880
08 902.310 926.310 18 902.610 926.610 28 902.910 926.910
09 902.340 926.340 19 902.640 926.640 29 902.940 926.940
10 902.370 926.370 20 902.670 926.670 30 902.970 926.970
31 903.000 927.000 41 903.300 927.300 51 903.600 927.600
32 903.030 927.030 42 903.330 927.330 52 903.630 927.630
33 903.060 927.060 43 903.360 927.360 53 903.660 927.660
34 903.090 927.090 44 903.390 927.390 54 903.690 927.690
35 903.120 927.120 45 903.420 927.420 55 903.720 927.720
36 903.150 927.150 46 903.450 927.450 56 903.750 927.750
37 903.180 927.180 47 903.480 927.480 57 903.780 927.780
38 903.210 927.210 48 903.510 927.510 58 903.810 927.810
39 903.240 927.240 49 903.540 927.540 59 903.840 927.840
40 903.270 927.270 50 903.570 927.570 60 903.870 927.870
V-TECH TROPEZ DX900 (20 CHANNELS)
905.6 - 907.5 TRANSPONDER (BASE) FREQUENCIES (100 KHZ SPACING)
925.5 - 927.4 HANDSET FREQUENCIES
CH BASE HANDSET CH BASE HANDSET CH BASE HANDSET
-- ------- ------- -- ------- ------- -- ------- -------
01 905.600 925.500 08 906.300 926.200 15 907.000 926.900
02 905.700 925.600 09 906.400 926.300 16 907.100 927.000
03 905.800 925.700 10 906.500 926.400 17 907.200 927.100
04 905.900 925.800 11 906.600 926.500 18 907.300 927.200
05 906.000 925.900 12 906.700 926.600 19 907.400 927.300
06 906.100 926.000 13 906.800 926.700 20 907.500 927.400
07 906.200 926.100 14 906.900 926.800
OTHER 900 MHZ CORDLESS PHONES
AT&T #9120 - - - - - 902.0 - 905.0 & 925.0 - 928.0 MHZ
OTRON CORP. #CP-1000 902.1 - 903.9 & 926.1 - 927.9 MHZ
SAMSUNG #SP-R912- - - 903.0 & 927.0 MHZ
</pre>
<p> </p> <hr> <p>
<a name="b29">29. What is Caller-ID?</a>
</p> <p>
This FAQ answer is stolen from Rockwell:
</p> <p>
Calling Number Delivery (CND), better known as Caller ID, is a
telephone service intended for residential and small business
customers. It allows the called Customer Premises Equipment (CPE) to
receive a calling party's directory number and the date and time of
the call during the first 4 second silent interval in the ringing
cycle.
</p> <h2> Parameters </h2>
The data signalling interface has the following characteristics:
<pre>
Link Type: 2-wire, simplex
Transmission Scheme: Analog, phase-coherent FSK
Logical 1 (mark) 1200 +/- 12 Hz
Logical 0 (space) 2200 +/- 22 Hz
Transmission Rate: 1200 bps
Transmission Level: 13.5 +/- dBm into 900 ohm load
</pre>
<h2> Protocol </h2>
The protocol uses 8-bit data words (bytes), each bounded by a start
bit and a stop bit. The CND message uses the Single Data Message
format shown below.
<pre>
| Channel | Carrier | Message | Message | Data | Checksum |
| Seizure | Signal | Type | Length | Word(s) | Word |
| Signal | | Word | Word | | |
</pre>
<h2> Channel Siezure Signal </h2>
The channel seizure is 30 continuous bytes of 55h (01010101) providing
a detectable alternating function to the CPE (i.e. the modem data
pump).
<h2> Carrier Signal </h2>
The carrier signal consists of 130 +/- 25 mS of mark (1200 Hz) to
condition the receiver for data.
<h2> Message Type Word </h2>
The message type word indicates the service and capability associated
with the data message. The message type word for CND is 04h
(00000100).
<h2> Message Length Word </h2>
The message length word specifies the total number of data words to
follow.
<h2> Data Words</h2>
The data words are encoded in ASCII and represent the following
information:
<ul> <li> The first two words represent the month
<li> The next two words represent the day of the month
<li> The next two words represent the hour in local military time
<li> The next two words represent the minute after the hour
<li> The calling party's directory number is represented by the remaining
words in the data word field </ul>
<p> </p>
If the calling party's directory number is not available to the
terminating central office, the data word field contains an ASCII "O".
If the calling party invokes the privacy capability, the data word
field contains an ASCII "P".
<h2> Checksum Word </h2>
The Checksum Word contains the twos complement of the modulo 256 sum
of the other words in the data message (i.e., message type, message
length, and data words). The receiving equipment may calculate the
modulo 256 sum of the received words and add this sum to the reveived
checksum word. A result of zero generally indicates that the message
was correctly received. Message retransmission is not supported.
<h2> Example CNS Single Data Message </h2>
An example of a received CND message, beginning with the message type
word, follows:
<pre>
04 12 30 39 33 30 31 32 32 34 36 30 39 35 35 35 31 32 31 32 51
04h= Calling number delivery information code (message type word)
12h= 18 decimal; Number of data words (date,time, and directory
number words)
ASCII 30,39= 09; September
ASCII 33,30= 30; 30th day
ASCII 31,32= 12; 12:00 PM
ASCII 32,34= 24; 24 minutes (i.e., 12:24 PM)
ASCII 36,30,39,35,35,35,31,32,31,32= (609) 555-1212; calling
party's directory number
51h= Checksum Word
</pre>
<h2> Data Access Arrangement (DAA) Requirements </h2>
To receive CND information, the modem monitors the phone line between
the first and second ring bursts without causing the DAA to go off
hook in the conventional sense, which would inhibit the transmission
of CND by the local central office. A simple modification to an
existing DAA circuit easily accomplishes the task.
<h2> Modem Requirements </h2>
Although the data signalling interface parameters match those of a
Bell 202 modem, the receiving CPE need not be a Bell 202 modem. A
V.23 1200 bps modem receiver may be used to demodulate the Bell 202
signal. The ring indicate bit (RI) may be used on a modem to indicate
when to monitor the phone line for CND information. After the RI bit
sets, indicating the first ring burst, the host waits for the RI bit
to reset. The host then configures the modem to monitor the phone
line for CND information.
<h2> Signalling </h2>
According to Bellcore specifications, CND signalling starts as early
as 300 mS after the first ring burst and ends at least 475 mS before
the second ring burst
<h2> Applications </h2>
Once CND information is received the user may process the information
in a number of ways.
<ol> <li> The date, time, and calling party's directory number can be
displayed.
<li> Using a look-up table, the calling party's directory number can be
correlated with his or her name and the name displayed.
<li> CND information can also be used in additional ways such as for:
<ol> <li> Bulletin board applications
<li> Black-listing applications
<li> Keeping logs of system user calls, or
<li> Implementing a telemarketing data base </ol> </ol>
<h2> References </h2>
For more information on Calling Number Delivery (CND), refer to
Bellcore publications TR-TSY-000030 and TR-TSY-000031.
<p> </p>
To obtain Bellcore documents contact:
<pre>
Bellcore Customer Service
60 New England Avenue, Room 1B252
Piscataway, NJ 08834-4196
(908) 699-5800
</pre>
<p> </p> <hr> <p>
<a name="b30">30. How do I block Caller-ID?</a>
</p> <p>
Always test as much as possible before relying on any method of blocking
Caller-ID. Some of these methods work in some areas, but not in others.
</p> <pre>
Dial *67 before you dial the number. (141 in the United Kingdom)
Dial your local TelCo and have them add Caller-ID block to your line.
Dial the 0 Operator and have him or her place the call for you.
Dial the call using a pre-paid phone card.
Dial through Security Consultants at (900)PREVENT for U.S. calls
($1.99/minute) or (900)STONEWALL for international calls ($3.99/minute).
Dial from a pay phone. :-)
</pre>
<p> </p> <hr> <p>
<a name="b31">31. What is a PBX?</a>
</p> <p>
A PBX is a Private Branch Exchange. A PBX is a small telephone switch
owned by a company or organization. Let's say your company has a
thousand employees. Without a PBX, you would need a thousand phone
lines. However, only 10% of your employees are talking on the phone
at one time. What if you had a computer that automatically found an
outside line every time one of your employees picked up the telephone.
With this type of system, you could get by with only paying for one
hundred phone lines. This is a PBX.
</p> <p> </p> <hr> <p>
<a name="b32">32. What is a VMB?</a>
</p> <p>
A VMB is a Voice Mail Box. A VMB is a computer that acts as an
answering machine for hundreds or thousands of users. Each user will
have their own Voice Mail Box on the system. Each mail box will have
a box number and a pass code.
</p> <p>
Without a passcode, you will usually be able to leave messages to
users on the VMB system. With a passcode, you can read messages and
administer a mailbox. Often, mailboxes will exist that were created
by default or are no longer used. These mailboxes may be taken over
by guessing their passcode. Often the passcode will be the mailbox
number or a common number such as 1234.
</p> <p> </p> <hr> <p>
<a name="b33">33. What are the ABCD tones for?</a>
</p> <p>
The ABCD tones are simply additional DTFM tones that may be used in any
way the standard (0-9) tones are used. The ABCD tones are used in the
U.S. military telephone network (AutoVon), in some Automatic Call
Distributor (ACD) systems, for control messages in some PBX systems, and
in some amateur radio auto-patches.
</p> <p>
In the AutoVon network, special telephones are equipped with ABCD keys.
The ABCD keys are defined as such:
</p> <pre>
A - Flash
B - Flash override priority
C - Priority communication
D - Priority override
</pre> <p>
Using a built-in maintenance mode of the Automatic Call Distributor
(ACD) systems once used by Directory Assistance operators, you could
connect two callers together.
</p> <p>
The purpose of the Silver Box is to create the ABCD tones.
</p> <p>
See also "What are the DTMF Frequencies?"
</p>
</body>
</html>
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