Table Of ContentAT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 1
SECTION 2 - V and H Coordinates
.2 MESSAGE TOLL TELEPHONE SERVICE
A. TOLL RATE GUIDE GENERAL RATE REGULATIONS
1. Description
This schedule contains the general rate regulations governing the use of the Toll Rate Guide material.
2. Regulations
The information contained in Toll Rate Guide for the State of California B. following, is used in conjunction
with other rate quoting material to determine rates and charges.
a. The Toll Rate Guide schedule contains lists of rate centers, localities and central offices, hereinafter
generally referred to as "points", within the State of California with V-H (vertical and horizontal) coordinates
for use in determining airline mileages for message toll telephone service, secretarial line service, foreign
exchange and foreign district area service and wide area telephone service available over the lines of the
Companyand of the companies with which it connects.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 2
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
A. TOLL RATE GUIDE GENERAL RATE REGULATIONS (cont'd)
2. Regulations (cont'd)
b. The material is arranged as follows:
(1) Rate Centers, including toll stations, are listed alphabetically in B.1. following. The symbol "ts"
associated with a rate center listed indicates toll station service.
(2) Localities are listed alphabetically in B.2. following, and cross-referenced to the rate center with which
they are associated.
(3) Central Offices are listed numerically by NPA (Numbering Plan Area) in B.3. following, and cross
referenced to the rate center with which they are associated.
(4) Local Access and Transport Areas are listed numerically in B.4. following.
c. The columns headed "LATA", "NPA" and "Central Office" in B.1. following, contain the local access and
transport area, numbering plan area and central office codes for each rate center.
d. The columns headed "V" and "H" in B.1. following, contain the vertical and horizontal coordinates for each
rate center.
e. The column headed "ID" in B.1. following, contains an identifier when the vertical and horizontal coordinates
are to be used only for a particular type of service.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 3
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
A. TOLL RATE GUIDE GENERAL RATE REGULATIONS (cont'd)
3. Basis For V-H Coordinates
For the purpose of determining airline mileages, vertical and horizontal grid lines have been established
across the United States. The spacing between adjacent vertical grid lines and between horizontal grid lines
represents a distance of one coordinate unit. This unit is the square root of 0.1, expressed in statute miles.
A four-digit vertical (V) and a four-digit horizontal (H) coordinate is computed for each rate center from its
latitude and longitude location by use of appropriate map-projection equations. A pair of V-H coordinates
locates a rate center, for determining airline mileages, at a particular intersection of an established vertical
grid line with an established horizontal grid line. The distance between any two rate centers is the airline
mileage computed as explained in 4., following.
To determine the V-H coordinates for a point refer to B. following. Look for the point in the column headed
"Exchange-Rate Center" in B.1. following. If the point is not listed, look for the name in the column headed
"Locality" in B.2. following, determine the rate center and locate the latter in B.1. following. Central office
codes listed in B.3. following may also be used to determine rate centers for use in determining rate
distances for message toll service.
4. Determination of Airline Mileages
To determine the rate distance between any two rate centers proceed as follows:
Step 1. Obtain the "V" and "H" coordinates for each rate center.
Step 2. Obtain the difference between the "V" coordinates of the two rate centers. Obtain the difference
between the "H" coordinates.
The difference is always obtained by subtracting the smaller coordinate from the larger coordinate.
Step 3. Divide each of the differences obtained in Step 2. by three, rounding each quotient to the nearer
integer.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 4
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
A. TOLL RATE GUIDE GENERAL RATE REGULATIONS (cont'd)
4. Determination of Airline Mileages (cont'd)
Step 4. Square these two integers and add the two squares.
If the sum of the squares is greater that 1777, divide the integers obtained in Step 3. by three and repeat
Step 4. Repeat this process until the sum of the squares obtained in Step 4. is less than 1778.
Step 5. The number of successive divisions by three in Steps 3. and 4. determines the value of "N". Multiply
the final sum of the two squares obtained in Step 4. by the multiplier specified in the following table for this
value of "N" preceding:
N MULTIPLIER MINIMUM RATE MILEAGE
1 0.9 -
2 8.1 41
3 72.9 121
4 656.1 361
Step 6. Obtain square root of product in Step 5. and, with any resulting fraction, round up to next higher
integer. This is the message rate mileage except that when the mileage so obtained is less than the
minimum rate mileage shown in Step 5., the minimum rate mileage corresponding to the "N" value is
applicable.
Example:
The message rate distance is required between Los Angeles and San Francisco.
V H
Step l. Los Angeles 9213 7878
San Francisco 8492 8719
Step 2. difference 721 841
Step 3a. dividing each difference by three and rounding to nearer
integer = 240 and 280
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 5
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
A. TOLL RATE GUIDE GENERAL RATE REGULATIONS (cont'd)
4. Determination of Airline Mileages (cont'd)
Example: (cont'd)
Step 4a. squaring integers and adding, 240 x 240 = 57,600
280 x 280 = 78,400
sum of squared integers 136,000
sum of squared integers is greater than 1777, so divide integers in Step 3a. by three and repeat Step 4a.
Step 3b. dividing integers in Step 3a. by three and rounding = 80 and 93
Step 4b. squaring integers and adding, 80 x 80 = 6,400
93 x 93 = 8,649
sum of squared integers 15,049
sum of squared integers is greater than 1777, so divide integers in Step 3b. by three and repeat Step 4b.
Step 3c. dividing integers in Step 3b. by three and rounding = 27 and 31
Step 4c. squaring integers and adding, 27 x 27 = 729
31 x 31 = 961
sum of squared integers 1,690
This sum of squared integers is less than 1778 and was obtained after three successive divisions by three;
therefore, "N" = 3.
Step 5. Multiply final sum of squared integers by 1,690
factor 72.9 (corresponding to "N" = 3) x 72.9
= 123,201.0
Step 6. Square root of 123,20l = 351 miles. The 351 miles is larger than the minimum of 121 rate miles
applicable when "N" = 3, so the message rate mileage is 351 miles.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 6
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
B. TOLL RATE GUIDE FOR THE STATE OF CALIFORNIA
1. Rate Centers
1
Exchange-Rate Center LATA NPA Central Office V H ID
Adin 724 530 299 7723 8554
Agoura 730 818 575,597,706,707, 9207 7972
735,865,874,879,
889,991
Alamitos 730 562 342,430,431,433, 9268 7838
434,438,439,493,
494,498,592,594,
596,597,598,621,
626,795,797,799,
856,930,936,961,
985,986,987
Alderpoint 722 707 926 7985 8971
NOTE 1: V-H coordinates are used for all services unless limited by an identifier as follows:
A. This V-H to be used for message toll telephone service only.
B. This V-H to be used for message toll telephone service of over 40 miles only.
C. This V-H to be used for message toll telephone service of 40 miles or less and measurement of
secretarial line, noncontiguous foreign exchange and noncontiguous foreign district area mileage only.
D. This V-H to be used for measurement of secretarial line, noncontiguous foreign exchange and
noncontiguous foreign district area mileage only.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 7
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
B. TOLL RATE GUIDE FOR THE STATE OF CALIFORNIA
1. Rate Centers
1
Exchange-Rate Center LATA NPA Central Office V H ID
Alhambra 730 626 237,280,281,282, 9201 7857
284,285,286,287,
288,289,291,292,
293,299,300,302,
307,308,309,312,
382,451,457,458,
548,569,570,571,
572,573,576,588,
614,692,927,943,
979
Alleghany 726 530 287 8098 8494
Alpaugh 728 559 949 8846 8159
Alpine (Alpine County) 726 530 694 8228 8303
Alta 726 530 389 8153 8482
Alturas 724 530 233 7652 8496
NOTE 1: V-H coordinates are used for all services unless limited by an identifier as follows:
A. This V-H to be used for message toll telephone service only.
B. This V-H to be used for message toll telephone service of over 40 miles only.
C. This V-H to be used for message toll telephone service of 40 miles or less and measurement of
secretarial line, noncontiguous foreign exchange and noncontiguous foreign district area mileage only.
D. This V-H to be used for measurement of secretarial line, noncontiguous foreign exchange and
noncontiguous foreign district area mileage only.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 8
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
B. TOLL RATE GUIDE FOR THE STATE OF CALIFORNIA (cont'd)
1. Rate Centers (cont'd)
1
Exchange-Rate Center LATA NPA Central Office V H ID
Anaheim 730 714 237,238,239,254, 9252 7806
284,300
NOTE 1: V-H coordinates are used for all services unless limited by an identifier as follows:
A. This V-H to be used for message toll telephone service only.
B. This V-H to be used for message toll telephone service of over 40 miles only.
C. This V-H to be used for message toll telephone service of 40 miles or less and measurement of
secretarial line, noncontiguous foreign exchange and noncontiguous foreign district area mileage only.
D. This V-H to be used for measurement of secretarial line, noncontiguous foreign exchange and
noncontiguous foreign district area mileage only.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 9
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
B. TOLL RATE GUIDE FOR THE STATE OF CALIFORNIA (cont'd)
1. Rate Centers (cont'd)
1
Exchange-Rate Center LATA NPA Central Office V H ID
Anaheim (cont’d) 730 714 414,490,491,502, 9252 7806
517,518,520,533,535,561,563,
575,630,632,635,666,687,688,
758,762,
764,765,772,774,776,778,780,
781,808,817,956,991, 999
NOTE 1: V-H coordinates are used for all services unless limited by an identifier as follows:
A. This V-H to be used for message toll telephone service only.
B. This V-H to be used for message toll telephone service of over 40 miles only.
C. This V-H to be used for message toll telephone service of 40 miles or less and measurement of
secretarial line, noncontiguous foreign exchange and noncontiguous foreign district area mileage
only.
D. This V-H to be used for measurement of secretarial line, noncontiguous foreign exchange and
noncontiguous foreign district area mileage only.
ATT TN CA-08-0189 Effective: July 15, 2009
AT&T CALIFORNIA GUIDEBOOK
PART 9 - Message Toll Services Original Sheet 10
SECTION 2 - V and H Coordinates
2. MESSAGE TOLL TELEPHONE SERVICE (cont'd)
B. TOLL RATE GUIDE FOR THE STATE OF CALIFORNIA (cont'd)
1. Rate Centers (cont'd)
1
Exchange-Rate Center LATA NPA Central Office V H ID
Anaheim (cont’d) 730 909 561 9252 7806
Anderson 724 530 365,378 7907 8760
Angels Camp 738 209 728,736,753,795 8397 8408
Annapolis 722 707 886 8304 8902
Antioch 722 925 522,706,753,754, 8434 8623
755,756,757,776,
777,778,779,978
NOTE 1: V-H coordinates are used for all services unless limited by an identifier as follows:
A. This V-H to be used for message toll telephone service only.
B. This V-H to be used for message toll telephone service of over 40 miles only.
C. This V-H to be used for message toll telephone service of 40 miles or less and measurement of
secretarial line, noncontiguous foreign exchange and noncontiguous foreign district area mileage
only.
D. This V-H to be used for measurement of secretarial line, noncontiguous foreign exchange and
noncontiguous foreign district area mileage only.
ATT TN CA-08-0189 Effective: July 15, 2009
