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-
- KP1XXST
-
- AT&T/BOC ROUTING CODES
-
- The following is a list of routing codes used by AT&T and Bell
- Operating Companies (BOC) that you can blue box to. Most codes are
- used by dialing KP+NPA+XXX+ST where XXX= the code, except where noted.
- There are notes attached after this list. Codes marked with a ? are
- unfamiliar to us.
-
- 000 - The Rate Quote System (RQS) (1)
- 001 - 005 Spare (2)
- 006 - 008 Reserved (3)
- 009 RQS
- 010 Reserved
- 011 International Origination Toll Center (IOTC) (15)
- 014 TWX Switching Plan (Canada) (?)
- 015 - 071 Spare
- 072 - 079 Reserved
- 080 - 081 Spare
- 082 - 087 Reserved
- (106 left) More: (Enter) or (Y)es, (N)o, (NS)non-stop? ns 088 Spare
- 089 Reserved
- 090 - 099 Spare
- 100 Plant Test - balance termination
- 101 Plant Test - test board
- 102 Plant Test - Milliwatt tone (1004 Hz)
- 103 Plant Test - signaling test termination
- 104 Plant Test - 2-way transmission and noise test
- 105 Plant Test - Automatic Transmission Measuring System /
- Remote Office Test Line (ROTL)
- 106 Plant Test - CCSA loop transmission test
- 107 Plant Test - par meter generator
- 108 Plant Test - CCSA loop echo support maintenance
- 109 Plant Test - echo canceler test line
- 110 - 119 Operator Codes
- 115 Operator Leave Word
- 116 Inward DA
- 120 Network Emergency Center (?)
- 121 Inward Operator (9)
- 122 AT&T Ready line INWATS (4)
- 123 - 130 Reserved
- 131 Directory Assistance
- 132 - 137 Reserved
- 138 IDDD for Equal Access (7)
- 139 - 140 Reserved
- 141 Rate and Route (10)
- 142 -147 Reserved
- 148 points not on an NPA - Hermosillo, Mexico (5)
- 149 Reserved
- 150 Cable Control (Satellite Avoidance) - Hawaii (5)
- 151 International Assistance
- 152 - 157 Reserved
- 158 Operator Assistance for Equal Access (7)
- 160 International Operator Center (IOC) (6)
- 161 Trunk Trouble Reporting
- 162 - 167 Reserved
- 168 points not on an NPA - Grenada
- 169 - 170 Reserved
- 171 points not on an NPA - Monterey, Mexico
- 172 points not on an NPA - Dominican Republic, Puerto Rico,
- Virgin Islands (Canada only)
- 173 Reserved
- 174 Cable Control (Satellite Avoidance) Caribbean
- 175 Reserved
- 176 points not on an NPA - Mexicali, Mexico
- 177 - 178 Reserved
- 179 points not on an NPA - Grenada
- 180 points not on an NPA - Mexico Numbers
- 181 Toll Station
- 182 International Switching Center (ISC) White Plains, 5 (14)
- 183 ISC New York, BW24
- 184 ISC Pittsburgh
- 185 ISC Atlanta OLT
- 186 ISC Sacramento
- 187 ISC Denver/Sherman Oaks (?) (15)
- 188 ISC New York, 5450
- 189 points not on an NPA - Mexico City, Mexico
- 190 points not on an NPA - Mexico Numbers
- 191 Conference loop around
- 191 AT&T Advanced 800 intercept recording frames (4)
- 192 Reserved
- 193 Cable Control (Satellite Avoidance) - Grenada
- 194 points not on an NPA - Tijuana, Mexico
- 195 AT&T Advanced 800 (4)
- 196 AT&T International 800 (4)
- 197 Reserved
- 198 AT&T International City Service Center (ICSC)
- 199 Cable Control (Satellite Avoidance) - Alaska
- 199 AT&T USA Direct (4)
-
- 4 or 5 digit codes (8)
-
- 1150,11501 Universal or Coin Callback
- 1151,11511 Conference Operator (11)
- 1152,11521 Mobile Service / Air-Ground
- 1153,11531 Marine Service (12)
- 1154,11541 Toll Terminal
- 1155,11551 Time and Charges callback
- 1156,11561 Hotel / Motel callback
- 1157,11571 IOTC access trunk
- 1158,11581 Inward- completion assistance (BOC)
- 1159,11591 Inward- busy line verification (BOC)
- 1160,11601 Calling Card Validation - dial pulse equipment (13)
- 1161,11611 Calling Card Validation - DTMF equipment
- 1162,11621 Calling Card Validation - MF equipment
-
-
- Notes:
-
- (1) The Rate Quote System is a voice response system used by operators
- to obtain routing information. The system, now being phased out, was
- used as an alternative to calling the Rate and Route operator.
- Operators would key-in required routing information and a synthesized
- voice would respond. Though the RQS is still operational, operators
- now obtain routing information from COMPIS (See note 10).
-
- KP+DD+ONPA+NXX+TNPA+NXX+ST to get the "rate step" for:
-
- DD = 00 Now
- DD = 01 Day Call (08:00-17:00)
- DD = 02 Evening Call (17:00-23:00)
- DD = 03 Night Call (23:00-08:00)
-
- KP+04+? Something with Mexico, unclear.
-
- KP+05+NPA+NXX+ST Gives the routing for a BOC inward (See note 9)
-
- KP+06+NPA+NXX+ST gives the routing for for an AT&T inward operator
- (See note 9)
-
- KP+07+XXXXXXX+ST Reads back the numbers you just typed
-
- KP+08+? Something with Enterprise and Zenith numbers, unclear.
-
- KP+09+NPA+NXX+ST Gives you the current time for the area and exchange
- just dialed.
-
- (2) When a code is marked spare, that means that there is no current
- or planned networkwide usage. It still may be utilized as a
- non-standard POTS exchange for WATS service by local companies.
-
- (3) When a code is marked reserved, it means that there may be planned
- networkwide usage.
-
- (4) This code is used by an AT&T custom service. It may be thought of
- as acting like a special area code and takes the following dialing
- format: KP+XXX+YYY+YYYY+ST where XXX is the code in question and Y can
- be any number 0-9.
-
- (5) All "points not on an NPA" and "Cable Control" function as pseudo
- area codes and are followed by a telephone number.
-
- (6) Calls to the IOC are dialled as follows: KP+160+CCC+ST CCC=Country
- Code (i.e. 044 or 144 for the UK).
-
- (7) These are special codes used with Equal Access. They are as
- follows:
-
- KP+138+PIC+ST then KP+CC+cc+xxxxx+ST
- KP+158+PIC+ST
-
- Where PIC is the primary carrier code, CC is the country code and cc
- is city code. xxxxx is subscriber number. We are not sure exactly when
- and where these are used.
-
- (8) All four and five digit codes are dialed as follows:
- KP+NPA+XXXX+ST or KP+NPA+XXXXX+ST. Keep in mind that not every code is
- in use in every NPA.
-
- (9) The format for an AT&T inward is usually KP+NPA+121+ST -- In some
- small cities there is an extra code used called a Terminating Toll
- Centre (TTC) or sometimes just a city code. If a TTC is used, the
- format is KP+NPA+TTC+121+ST. To get an inward with most BOCs you dial
- KP+NPA+11591+ST but there are some which use a format of
- KP+NPA+TTC+121+ST. To get the inward routing for a particular
- exchange, use the Rate Quote System (RQS).
-
- (10) The number for Rate and Route was 800+141+1212 but this was
- discontinued sometime last year (1987) when the TSPS operators got a
- computer terminal called COMPIS. In each there is an inward which acts
- like a Rate and Route operator. In New York it is 716+121.
-
- (11) With the advent of Alliance Teleconferencing, use of the
- conference operator dwindled. There are currently four operator
- handling conferences. They are as follows: Atlanta 404+11511,
- Minneapolis 507+11511, New York 212+11511 and Oakland 415+11511.
- 800-225-0233 translates to the conference operator closest to you.
-
- (12) The Marine Operator is used in calling ships that are close to
- the United States. There is an operator called the "High Seas"
- operator who can be reached by dialing 800-SEA-CALL (800-732-2255).
- The High Seas operator is a service of AT&T, while Marisat is an
- independent company. A High Seas call can go to any ocean for $14.98
- for the first 3 minutes and $4.98 for each additional minute. A
- Marisat only to three oceans and costs $10 a minute.
-
- (13) 116X and 116XX are used to verify an AT&T Calling Card number.
- You dial KP+NPA+116XX+ST when you hear a "bong" you dial the calling
- card number. If you use 11611 you enter the number in Touch Tone and
- if you use 11621 you enter the card number in MF using KP and ST.
-
- (14) These ISC codes are used to provide alternate routing for
- electro-mechanical switches. Some older electro-mechanical switches,
- for example #5 Crossbar (5XB) cannot outpulse 011+CCC (CCC=Country
- Code) for international dialing. AT&T has set up these special codes
- to handle international calls. A 5XB can dial KP+18X+ST. They would
- then receive a wink (short blast of 2600 Hz) and would proceed to dial
- the country code and number. If you want to make an international call
- you dial KP+(NPA)+18X+ST where the NPA is optional. After the wink
- dial the country code, city code and number. The "," after the city
- name is the switch number if there is more then one 4-ESS in that
- city.
-
- (15) The 187 code was assigned to Atlanta until up to the end of
- February 1988. AT&T is in the process in routing the calls to the
- Sherman Oaks Office in California.
-
- (16) To make international calls dial KP+011+CCC+ST where CCC is the
- country code; and then dial KP+CC+XXXXXXX+ST where CC is the city code
- and XXXXXXXX is the telephone number.
-
- If you have any interesting numbers, scan sheets, NUA's, or anything
- similar send to:
-
- 2600
- P.O. Box 99
- Middle Island, NY 11953-0099
-
-