rsvp/telamerica.sh

## telamerica.sh
#!/usr/bin/env bash
#              bash 4.1.5(1)     Linux Ubuntu 10.04           Date : 2012-08-11
#
# _______________|  telamerica : look-up North American region / area code.
#
#           Usage:  telamerica  [term]
#                              ^area code (three digits work best),
#                               or case-sensitive partial regional name.
#
#        Examples:  % telamerica Mexico
#                   505.575; New Mexico
#                   #  i.e. Mexico is not considered North America.
#                   #  Area codes are separated by period.
#
#                   % telamerica 575
#                   575; New Mexico
#
#    Dependencies:  awk


#  CHANGE LOG  get LATEST version from https://bitbucket.org/rsvp/gists/src
#
#  2012-08-11  First version. Telephone data massaged from:
#     http://en.wikipedia.org/wiki/List_of_North_American_Numbering_Plan_area_codes
#              California region is broken down into more specific areas.
#              Area codes planned for future relief are included.
#              Special three-digit codes are also included.
#
#  See also:
#  Telephone numbering plan,
#       https://en.wikipedia.org/wiki/Area_codes for history and syntax.
#  North American numbering plan,
#       https://en.wikipedia.org/wiki/North_American_Numbering_Plan
#            The +1 country code includes far more than just the USA!
#
#  NPA:= Numbering Plan Area Code.
#        NPA cannot begin with 0 or 1.
#        NPA cannot have 9 as its middle digit.
#        Each area code may contain up to 7,919,900 unique phone numbers.
#        Codes ending in double digits are reserved as easily recognizable
#             codes (ERCs), to be used for special purposes such as toll-free
#             800, 888, 877, 866 and 855, personal 700 numbers, and high-toll
#             900 numbers, rather than for geographic areas.
#        Most North American mobile phones are assigned the same
#             locality-specific codes as landlines.


#           _____ Prelims
set -u
#   ^ unbound (i.e. unassigned) variables shall be errors.
#           Example of default assignment:    arg1=${1:-'foo'}
set -e
#   ^ error checking :: Highly Recommended (caveat:  you can't check $? later).
#
# _______________     ::  BEGIN  Script ::::::::::::::::::::::::::::::::::::::::

term=${*:-'California$'}

outf='/dev/shm/88_areacode-out.tmp'
tmpf='/dev/shm/88_areacode.tmp'


#   Write to TMP FILE data on 92 regions such that:
#        California region is broken down further into specific cities/counties.
#        Special three-digit codes are listed at the end.
#   Unicode characters have been converted to ASCII equivalent.
#   Area codes are separated by period.
#   Region and area code are separated by @.

cat - > $tmpf <<EOHereDoc
Alabama@205.251.256.334.659.938
Alaska@907.250
Arizona@480.520.602.623.928
Arkansas@327.479.501.870
California@209.213.310.323.341.369.408.415.424.442.510.530.559.562.619.626.627.628.650.657.661.669.707.714.747.760.764.805.818.831.858.909.916.925.935.949.951
California (Stockton, Modesto, Merced, Tracy, San Andreas, Yosemite National Park)@209
California (Downtown Los Angeles)@213
California (Beverly Hills, Brentwood, Malibu, Santa Monica, Torrance, Santa Catalina Island)@310
California (Los Angeles excluding Downtown, Western Los Angeles, Westwood, San Fernando Valley, Florence)@323
California (Oakland, Fremont, Hayward, Richmond, Berkeley, Alameda)@341
California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah)@369
California (San Jose, Cupertino, Los Gatos, Milpitas, Mountain View, Santa Clara, Sunnyvale, Silicon Valley)@408
California (San Francisco, Marin County)@415
California (Beverly Hills, Brentwood, Malibu, Santa Monica, Torrance, Santa Catalina Island)@424
California (Bishop, Ridgecrest, San Bernardino County, Riverside County, Palm Springs, Palm Desert)@442
California (Oakland, Fremont, Hayward, Richmond, Berkeley, Alameda)@510
California (Redding, Auburn, Chico, Davis, Lake Tahoe, Placerville, Susanville, Truckee, Yreka)@530
California (Fresno, Hanford, Madera, Tulare, Visalia, Central Valley)@559
California (Long Beach, Whittier, Norwalk, La Habra, Lakewood, Pico Rivera)@562
California (San Diego, Chula Vista, National City, El Cajon, La Mesa, Lemon Grove)@619
California (Pasadena, Arcadia, Clermont, Covina, El Monte, La Puente, Monrovia, Upland, West Covina)@626
California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah)@627
California (San Francisco, Marin County)@628
California (Palo Alto, Menlo Park, Mountain View, San Mateo, Santa Clara, Stanford, South San Francisco)@650
California (Orange County, Anaheim, Fullerton, Garden Grove, Huntington Beach, Irvine, Newport Beach, Santa Ana)@657
California (Bakersfield, Lancaster, Palmdale, Kern County)@661
California (San Jose, Cupertino, Los Gatos, Milpitas, Mountain View, Santa Clara, Sunnyvale, Silicon Valley)@669
California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah)@707
California (Orange County, Anaheim, Fullerton, Garden Grove, Huntington Beach, Irvine, Newport Beach, Santa Ana)@714
California (Los Angeles County, San Fernando Valley)@747
California (Bishop, Ridgecrest, San Bernardino County, Riverside County, Palm Springs, Palm Desert) @760
California (Palo Alto, Menlo Park, Mountain View, San Mateo, Santa Clara, Stanford, South San Francisco)@764
California (Ventura County, San Luis Obispo County, Santa Barbara County, Ojai, Oxnard, Santa Maria, Simi Valley)@805
California (San Fernando Valley, Burbank, Encino, Glendale, North Hollywood, San Fernando, Van Nuys, Woodland Hills)@818
California (Monterey, Salinas, Monterey County, Hollister, Santa Cruz)@831
California (San Diego)@858
California (San Bernardino County, Los Angeles County, Riverside County, Fontana, Pomona, Claremont, Chino, Ontario, Redlands)@909
California (Sacramento)@916
California (Livermore, Concord, Pleasant Hill, Walnut Creek, Martinez, Pleasanton, Dublin)@925
California (San Diego, Chula Vista, National City, El Cajon, La Mesa, Lemon Grove)@935
California (Irvine, Lake Forest, California, Newport Beach, Corona del Mar, Orange County)@949
California (Riverside County, Corona, Lake Elsinore, Mira Loma, Moreno Valley, Sun City, Winchester, Lakeview)@951
Colorado@303.719.720.970
Connecticut@203.475.860.959
Delaware@302
District of Columbia DC@202
Florida@239.305.321.352.386.407.561.689.727.754.772.786.813.850.863.904.941.954
Georgia@229.404.470.478.678.706.762.770.912
Hawaii@808
Idaho@208
Illinois@217.224.309.312.331.447.464.618.630.708.730.773.779.815.847.872
Indiana@219.260.317.574.765.812
Iowa@319.515.563.641.712
Kansas@316.620.785.913
Kentucky@270.364.502.606.859
Louisiana@225.318.337.504.985
Maine@207
Maryland@227.240.301.410.443.667
Massachusetts@339.351.413.508.617.774.781.857.978
Michigan@231.248.269.313.517.586.616.679.734.810.906.947.989
Minnesota@218.320.507.612.651.763.952
Mississippi@228.601.662.769
Missouri@314.417.557.573.636.660.816.975
Montana@406
Nebraska@308.402.531
Nevada@702.775
New Hampshire@603
New Jersey@201.551.609.732.848.856.862.908.973
New Mexico@505.575
New York@212.315.347.516.518.585.607.631.646.716.718.845.914.917.929
North Carolina@252.336.704.828.910.919.980.984
North Dakota@701
Ohio@216.234.283.330.380.419.440.513.567.614.740.937
Oklahoma@405.539.580.918
Oregon@458.503.541.971
Pennsylvania@215.267.272.412.445.484.570.582.610.717.724.814.835.878
Rhode Island@401
South Carolina@803.843.864
South Dakota@605
Tennessee@423.615.731.865.901.931
Texas@210.214.254.281.325.361.409.430.432.469.512.682.713.737.806.817.830.832.903.915.936.940.956.972.979
Utah@385.435.801
Vermont@802
Virginia@276.434.540.571.703.757.804
Washington@206.253.360.425.509.564
West Virginia@304.681
Wisconsin@262.274.414.534.608.715.920
Wyoming@307
Alberta@403.587.780.825
British Columbia@236.250.604.672.778
Manitoba@204.431
New Brunswick@506
Newfoundland and Labrador@709
Nova Scotia@902
Ontario@226.249.289.343.365.416.437.519.613.647.705.807.905
Prince Edward Island@902
Quebec@418.438.450.514.579.581.819.873
Saskatchewan@306.639
Yukon Northwest Canada@867
Anguilla@264
Antigua and Barbuda@268
Bahamas@242
Barbados@246
Bermuda@441
British Virgin Islands@284
Cayman Islands@345
Dominica@767
Dominican Republic@809.829.849
Grenada@473
Jamaica@876
Montserrat@664
Puerto Rico@787.939
Saint Kitts and Nevis@869
Saint Lucia@758
Saint Vincent and the Grenadines@784
Sint Maarten@721
Trinidad and Tobago@868
Turks and Caicos Islands@649
US Virgin Islands@340
American Samoa@684
Guam@671
Northern Marianas Islands@670
Canada special services@600
Inbound international@456
Interexchange carrier services@700
Personal Communications Service@500.522.533.544.566.577.588
Premium call services@900
Toll-free@800.822.833.844.855.866.877.880.881.882.888
US government@710
Fictional usage@555
Special code: community social services@211
Special code: city government, non-emergency police@311
Special code: local telephone directory service@411
Special code: traffic, road, tourist information@511
Special code: repair service, or mobile customer service@611
Special code: relay service for hearing or speech disabilities@711
Special code: dig safe underground pipe safety@811
Special code: emergency dispatcher for police, fire, ambulance@911
Special code: returns number@830
Special code: returns number@958
Special code: returns number@998
EOHereDoc


#  Type of first argument term determines appropriate action;
#       To TEST whether term is an INTEGER, we could use:
#            [[ $term =~ ^-?[0-9]+$ ]]
#       but double brackets is a bashism,
#       and =~ is supported only for bash 3.1 onwards.
#
#  awk matches, then PRINTS the appropriate FIELDS.
#        -F@ specifies field separator as @ in the phone data above.
#
printsep='"; "'
#          Be assured: semi-colons do not appear in the data above,
#          which is useful to know for post-processing.
#
if [ "${term//[0-9]*}" = "" ]; then
     # yes, natural number -- so print country name:
     awk -F@ "\$2 ~ /$term/ {print $term $printsep \$1}" $tmpf > $outf
else
     # no, has non-numerical characters -- so print telephone code:
     awk -F@ "\$1 ~ /$term/ {print \$2   $printsep \$1}" $tmpf > $outf
fi


#  display OUTPUT if non-zero size, otherwise generate error message:
#          remember to clean-up...
if [ -s  $outf ] ; then
     cat $outf
     rm -f  $tmpf  $outf
else
     echo " !!  ${0##*/}: NULL response; check arguments and data."  1>&2
     rm -f  $tmpf  $outf
     exit 113
fi


exit 0
# _______________ EOS ::  END of Script ::::::::::::::::::::::::::::::::::::::::


#  Footnote: there are also SPECIAL CODES, such as:
#
#       *51 and 1151 A history of unanswered calls on a telephone number.
#       *57 and 1157 Trace harassing, threatening, abusive, obscene calls.
#       *66 and 1166 Keep retrying a busy-line (Called-party camp-on).
#       *67 and 1167 Caller ID Block.
#       *69 and 1169 Call Return.
#       *70 and 1170 Cancel call waiting on a call-by-call basis.
#       *71 and 1171 Three way calling.
#       *74 and 1174 Speed dialing.
#       *75 allows a total of 30 speed-call numbers.
#       *82 and 1182 Releases Caller ID block on a call-by-call basis.
#
#  Note: The four digit numbers do not work in some areas. The codes prefixed
#  with the "*" symbol are intended for use on Touch-Tone telephones, whereas the
#  four-digit numbers prefixed 11xx are intended for use on older rotary dial
#  telephones,


#  StackOverflow: Test whether bash string is valid as an integer:
#  http://stackoverflow.com/questions/2210349/


#  vim: set fileencoding=utf-8 ff=unix tw=78 ai syn=sh :
	#!/usr/bin/env bash
	# bash 4.1.5(1) Linux Ubuntu 10.04 Date : 2012-08-11
	#
	# _______________\| telamerica : look-up North American region / area code.
	#
	# Usage: telamerica [term]
	# ^area code (three digits work best),
	# or case-sensitive partial regional name.
	#
	# Examples: % telamerica Mexico
	# 505.575; New Mexico
	# # i.e. Mexico is not considered North America.
	# # Area codes are separated by period.
	#
	# % telamerica 575
	# 575; New Mexico
	#
	# Dependencies: awk


	# CHANGE LOG get LATEST version from https://bitbucket.org/rsvp/gists/src
	#
	# 2012-08-11 First version. Telephone data massaged from:
	# http://en.wikipedia.org/wiki/List_of_North_American_Numbering_Plan_area_codes
	# California region is broken down into more specific areas.
	# Area codes planned for future relief are included.
	# Special three-digit codes are also included.
	#
	# See also:
	# Telephone numbering plan,
	# https://en.wikipedia.org/wiki/Area_codes for history and syntax.
	# North American numbering plan,
	# https://en.wikipedia.org/wiki/North_American_Numbering_Plan
	# The +1 country code includes far more than just the USA!
	#
	# NPA:= Numbering Plan Area Code.
	# NPA cannot begin with 0 or 1.
	# NPA cannot have 9 as its middle digit.
	# Each area code may contain up to 7,919,900 unique phone numbers.
	# Codes ending in double digits are reserved as easily recognizable
	# codes (ERCs), to be used for special purposes such as toll-free
	# 800, 888, 877, 866 and 855, personal 700 numbers, and high-toll
	# 900 numbers, rather than for geographic areas.
	# Most North American mobile phones are assigned the same
	# locality-specific codes as landlines.


	# _____ Prelims
	set -u
	# ^ unbound (i.e. unassigned) variables shall be errors.
	# Example of default assignment: arg1=${1:-'foo'}
	set -e
	# ^ error checking :: Highly Recommended (caveat: you can't check $? later).
	#
	# _______________ :: BEGIN Script ::::::::::::::::::::::::::::::::::::::::

	term=${*:-'California$'}

	outf='/dev/shm/88_areacode-out.tmp'
	tmpf='/dev/shm/88_areacode.tmp'


	# Write to TMP FILE data on 92 regions such that:
	# California region is broken down further into specific cities/counties.
	# Special three-digit codes are listed at the end.
	# Unicode characters have been converted to ASCII equivalent.
	# Area codes are separated by period.
	# Region and area code are separated by @.

	cat - > $tmpf <<EOHereDoc
	Alabama@205.251.256.334.659.938
	Alaska@907.250
	Arizona@480.520.602.623.928
	Arkansas@327.479.501.870
	California@209.213.310.323.341.369.408.415.424.442.510.530.559.562.619.626.627.628.650.657.661.669.707.714.747.760.764.805.818.831.858.909.916.925.935.949.951
	California (Stockton, Modesto, Merced, Tracy, San Andreas, Yosemite National Park)@209
	California (Downtown Los Angeles)@213
	California (Beverly Hills, Brentwood, Malibu, Santa Monica, Torrance, Santa Catalina Island)@310
	California (Los Angeles excluding Downtown, Western Los Angeles, Westwood, San Fernando Valley, Florence)@323
	California (Oakland, Fremont, Hayward, Richmond, Berkeley, Alameda)@341
	California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah)@369
	California (San Jose, Cupertino, Los Gatos, Milpitas, Mountain View, Santa Clara, Sunnyvale, Silicon Valley)@408
	California (San Francisco, Marin County)@415
	California (Beverly Hills, Brentwood, Malibu, Santa Monica, Torrance, Santa Catalina Island)@424
	California (Bishop, Ridgecrest, San Bernardino County, Riverside County, Palm Springs, Palm Desert)@442
	California (Oakland, Fremont, Hayward, Richmond, Berkeley, Alameda)@510
	California (Redding, Auburn, Chico, Davis, Lake Tahoe, Placerville, Susanville, Truckee, Yreka)@530
	California (Fresno, Hanford, Madera, Tulare, Visalia, Central Valley)@559
	California (Long Beach, Whittier, Norwalk, La Habra, Lakewood, Pico Rivera)@562
	California (San Diego, Chula Vista, National City, El Cajon, La Mesa, Lemon Grove)@619
	California (Pasadena, Arcadia, Clermont, Covina, El Monte, La Puente, Monrovia, Upland, West Covina)@626
	California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah)@627
	California (San Francisco, Marin County)@628
	California (Palo Alto, Menlo Park, Mountain View, San Mateo, Santa Clara, Stanford, South San Francisco)@650
	California (Orange County, Anaheim, Fullerton, Garden Grove, Huntington Beach, Irvine, Newport Beach, Santa Ana)@657
	California (Bakersfield, Lancaster, Palmdale, Kern County)@661
	California (San Jose, Cupertino, Los Gatos, Milpitas, Mountain View, Santa Clara, Sunnyvale, Silicon Valley)@669
	California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah)@707
	California (Orange County, Anaheim, Fullerton, Garden Grove, Huntington Beach, Irvine, Newport Beach, Santa Ana)@714
	California (Los Angeles County, San Fernando Valley)@747
	California (Bishop, Ridgecrest, San Bernardino County, Riverside County, Palm Springs, Palm Desert) @760
	California (Palo Alto, Menlo Park, Mountain View, San Mateo, Santa Clara, Stanford, South San Francisco)@764
	California (Ventura County, San Luis Obispo County, Santa Barbara County, Ojai, Oxnard, Santa Maria, Simi Valley)@805
	California (San Fernando Valley, Burbank, Encino, Glendale, North Hollywood, San Fernando, Van Nuys, Woodland Hills)@818
	California (Monterey, Salinas, Monterey County, Hollister, Santa Cruz)@831
	California (San Diego)@858
	California (San Bernardino County, Los Angeles County, Riverside County, Fontana, Pomona, Claremont, Chino, Ontario, Redlands)@909
	California (Sacramento)@916
	California (Livermore, Concord, Pleasant Hill, Walnut Creek, Martinez, Pleasanton, Dublin)@925
	California (San Diego, Chula Vista, National City, El Cajon, La Mesa, Lemon Grove)@935
	California (Irvine, Lake Forest, California, Newport Beach, Corona del Mar, Orange County)@949
	California (Riverside County, Corona, Lake Elsinore, Mira Loma, Moreno Valley, Sun City, Winchester, Lakeview)@951
	Colorado@303.719.720.970
	Connecticut@203.475.860.959
	Delaware@302
	District of Columbia DC@202
	Florida@239.305.321.352.386.407.561.689.727.754.772.786.813.850.863.904.941.954
	Georgia@229.404.470.478.678.706.762.770.912
	Hawaii@808
	Idaho@208
	Illinois@217.224.309.312.331.447.464.618.630.708.730.773.779.815.847.872
	Indiana@219.260.317.574.765.812
	Iowa@319.515.563.641.712
	Kansas@316.620.785.913
	Kentucky@270.364.502.606.859
	Louisiana@225.318.337.504.985
	Maine@207
	Maryland@227.240.301.410.443.667
	Massachusetts@339.351.413.508.617.774.781.857.978
	Michigan@231.248.269.313.517.586.616.679.734.810.906.947.989
	Minnesota@218.320.507.612.651.763.952
	Mississippi@228.601.662.769
	Missouri@314.417.557.573.636.660.816.975
	Montana@406
	Nebraska@308.402.531
	Nevada@702.775
	New Hampshire@603
	New Jersey@201.551.609.732.848.856.862.908.973
	New Mexico@505.575
	New York@212.315.347.516.518.585.607.631.646.716.718.845.914.917.929
	North Carolina@252.336.704.828.910.919.980.984
	North Dakota@701
	Ohio@216.234.283.330.380.419.440.513.567.614.740.937
	Oklahoma@405.539.580.918
	Oregon@458.503.541.971
	Pennsylvania@215.267.272.412.445.484.570.582.610.717.724.814.835.878
	Rhode Island@401
	South Carolina@803.843.864
	South Dakota@605
	Tennessee@423.615.731.865.901.931
	Texas@210.214.254.281.325.361.409.430.432.469.512.682.713.737.806.817.830.832.903.915.936.940.956.972.979
	Utah@385.435.801
	Vermont@802
	Virginia@276.434.540.571.703.757.804
	Washington@206.253.360.425.509.564
	West Virginia@304.681
	Wisconsin@262.274.414.534.608.715.920
	Wyoming@307
	Alberta@403.587.780.825
	British Columbia@236.250.604.672.778
	Manitoba@204.431
	New Brunswick@506
	Newfoundland and Labrador@709
	Nova Scotia@902
	Ontario@226.249.289.343.365.416.437.519.613.647.705.807.905
	Prince Edward Island@902
	Quebec@418.438.450.514.579.581.819.873
	Saskatchewan@306.639
	Yukon Northwest Canada@867
	Anguilla@264
	Antigua and Barbuda@268
	Bahamas@242
	Barbados@246
	Bermuda@441
	British Virgin Islands@284
	Cayman Islands@345
	Dominica@767
	Dominican Republic@809.829.849
	Grenada@473
	Jamaica@876
	Montserrat@664
	Puerto Rico@787.939
	Saint Kitts and Nevis@869
	Saint Lucia@758
	Saint Vincent and the Grenadines@784
	Sint Maarten@721
	Trinidad and Tobago@868
	Turks and Caicos Islands@649
	US Virgin Islands@340
	American Samoa@684
	Guam@671
	Northern Marianas Islands@670
	Canada special services@600
	Inbound international@456
	Interexchange carrier services@700
	Personal Communications Service@500.522.533.544.566.577.588
	Premium call services@900
	Toll-free@800.822.833.844.855.866.877.880.881.882.888
	US government@710
	Fictional usage@555
	Special code: community social services@211
	Special code: city government, non-emergency police@311
	Special code: local telephone directory service@411
	Special code: traffic, road, tourist information@511
	Special code: repair service, or mobile customer service@611
	Special code: relay service for hearing or speech disabilities@711
	Special code: dig safe underground pipe safety@811
	Special code: emergency dispatcher for police, fire, ambulance@911
	Special code: returns number@830
	Special code: returns number@958
	Special code: returns number@998
	EOHereDoc



	# Type of first argument term determines appropriate action;
	# To TEST whether term is an INTEGER, we could use:
	# [[ $term =~ ^-?[0-9]+$ ]]
	# but double brackets is a bashism,
	# and =~ is supported only for bash 3.1 onwards.
	#
	# awk matches, then PRINTS the appropriate FIELDS.
	# -F@ specifies field separator as @ in the phone data above.
	#
	printsep='"; "'
	# Be assured: semi-colons do not appear in the data above,
	# which is useful to know for post-processing.
	#
	if [ "${term//[0-9]*}" = "" ]; then
	# yes, natural number -- so print country name:
	awk -F@ "\$2 ~ /$term/ {print $term $printsep \$1}" $tmpf > $outf
	else
	# no, has non-numerical characters -- so print telephone code:
	awk -F@ "\$1 ~ /$term/ {print \$2 $printsep \$1}" $tmpf > $outf
	fi



	# display OUTPUT if non-zero size, otherwise generate error message:
	# remember to clean-up...
	if [ -s $outf ] ; then
	cat $outf
	rm -f $tmpf $outf
	else
	echo " !! ${0##*/}: NULL response; check arguments and data." 1>&2
	rm -f $tmpf $outf
	exit 113
	fi


	exit 0
	# _______________ EOS :: END of Script ::::::::::::::::::::::::::::::::::::::::


	# Footnote: there are also SPECIAL CODES, such as:
	#
	# *51 and 1151 A history of unanswered calls on a telephone number.
	# *57 and 1157 Trace harassing, threatening, abusive, obscene calls.
	# *66 and 1166 Keep retrying a busy-line (Called-party camp-on).
	# *67 and 1167 Caller ID Block.
	# *69 and 1169 Call Return.
	# *70 and 1170 Cancel call waiting on a call-by-call basis.
	# *71 and 1171 Three way calling.
	# *74 and 1174 Speed dialing.
	# *75 allows a total of 30 speed-call numbers.
	# *82 and 1182 Releases Caller ID block on a call-by-call basis.
	#
	# Note: The four digit numbers do not work in some areas. The codes prefixed
	# with the "*" symbol are intended for use on Touch-Tone telephones, whereas the
	# four-digit numbers prefixed 11xx are intended for use on older rotary dial
	# telephones,


	# StackOverflow: Test whether bash string is valid as an integer:
	# http://stackoverflow.com/questions/2210349/


	# vim: set fileencoding=utf-8 ff=unix tw=78 ai syn=sh :