Central Office Multiplexing

Central office multiplexing (or CO muxing) is telephone exchange (central office) equipment that derives a number of lower speed channels from one high-bandwidth channel. This type of multiplexing is needed when the customer wants to terminate the DS1 or DS3 in the central office and wants to ‘pick up’ lower level services. For example, a customer may order a DS3, using it to carry a number of DS1 level services from different IXC carriers.

Telecommunications
History
  • Beacons
  • Broadcasting
  • Communications satellites
  • Computer networks
  • Drums
  • Electrical telegraphs
  • Fax
  • Heliographs
  • Hydraulic telegraphs
  • Internet
  • Mass media
  • Mobile phones
  • Optical telegraphy
  • Photophones
  • Radio
  • Radiotelephones
  • Smoke signals
  • Telegraphy
  • Telephones
  • The Telephone Cases
  • Television
  • Undersea telegraph lines
  • Videophones
Pioneers
  • Edwin Howard Armstrong
  • John Logie Baird
  • Alexander Graham Bell
  • Tim Berners-Lee
  • Jagadish Chandra Bose
  • Vint Cerf
  • Claude Chappe
  • Lee De Forest
  • Philo Farnsworth
  • Reginald Fessenden
  • Elisha Gray
  • Guglielmo Marconi
  • Alexander Stepanovich Popov
  • Johann Philipp Reis
  • Nikola Tesla
  • Camille Papin Tissot
  • Alfred Vail
  • Charles Wheatstone
  • Vladimir K. Zworykin
Media
  • Coaxial cable
  • Free-space optical
  • Optical fiber
  • Radio waves
  • Telephone lines
  • Terrestrial microwave
Networks
  • ARPANET
  • BITNET
  • Ethernet
  • FidoNet
  • ISDN
  • Internet
  • Local area
  • Mobile
  • NGN
  • Packet switched
  • Public Switched Telephone
  • Radio
  • Telecommunications equipment
  • Television
  • Telex
  • Wide area
  • World Wide Web
  • Wireless
Geographic
Telecommunications in Africa
Sovereign states
  • Algeria
  • Angola
  • Benin
  • Botswana
  • Burkina Faso
  • Burundi
  • Cameroon
  • Cape Verde
  • Central African Republic
  • Chad
  • Comoros
  • Democratic Republic of the Congo
  • Republic of the Congo
  • Djibouti
  • Egypt
  • Equatorial Guinea
  • Eritrea
  • Ethiopia
  • Gabon
  • The Gambia
  • Ghana
  • Guinea
  • Guinea-Bissau
  • Ivory Coast (Côte d'Ivoire)
  • Kenya
  • Lesotho
  • Liberia
  • Libya
  • Madagascar
  • Malawi
  • Mali
  • Mauritania
  • Mauritius
  • Morocco
  • Mozambique
  • Namibia
  • Niger
  • Nigeria
  • Rwanda
  • São Tomé and Príncipe
  • Senegal
  • Seychelles
  • Sierra Leone
  • Somalia
  • South Africa
  • South Sudan
  • Sudan
  • Swaziland
  • Tanzania
  • Togo
  • Tunisia
  • Uganda
  • Zambia
  • Zimbabwe
States with limited
recognition
  • Sahrawi Arab Democratic Republic
  • Somaliland
Dependencies and
other territories
  • Canary Islands / Ceuta / Melilla / Plazas de soberanía (Spain)
  • Madeira (Portugal)
  • Mayotte / Réunion (France)
  • Saint Helena / Ascension Island / Tristan da Cunha (United Kingdom)
  • Western Sahara
Telecommunications in Asia
Sovereign
states
  • Afghanistan
  • Armenia
  • Azerbaijan
  • Bahrain
  • Bangladesh
  • Bhutan
  • Brunei
  • Burma (Myanmar)
  • Cambodia
  • People's Republic of China
  • Cyprus
  • East Timor (Timor-Leste)
  • Egypt
  • Georgia
  • India
  • Indonesia
  • Iran
  • Iraq
  • Israel
  • Japan
  • Jordan
  • Kazakhstan
  • North Korea
  • South Korea
  • Kuwait
  • Kyrgyzstan
  • Laos
  • Lebanon
  • Malaysia
  • Maldives
  • Mongolia
  • Nepal
  • Oman
  • Pakistan
  • Philippines
  • Qatar
  • Russia
  • Saudi Arabia
  • Singapore
  • Sri Lanka
  • Syria
  • Tajikistan
  • Thailand
  • Turkey
  • Turkmenistan
  • United Arab Emirates
  • Uzbekistan
  • Vietnam
  • Yemen
States with limited
recognition
  • Abkhazia
  • Nagorno-Karabakh
  • Northern Cyprus
  • Palestine
  • South Ossetia
  • Taiwan
Dependencies and
other territories
  • British Indian Ocean Territory
  • Christmas Island
  • Cocos (Keeling) Islands
  • Hong Kong
  • Macau
Telecommunications in Europe
Sovereign states
  • Albania
  • Andorra
  • Armenia
  • Austria
  • Azerbaijan
  • Belarus
  • Belgium
  • Bosnia and Herzegovina
  • Bulgaria
  • Croatia
  • Cyprus
  • Czech Republic
  • Denmark
  • Estonia
  • Finland
  • France
  • Georgia
  • Germany
  • Greece
  • Hungary
  • Iceland
  • Ireland
  • Italy
  • Kazakhstan
  • Latvia
  • Liechtenstein
  • Lithuania
  • Luxembourg
  • Macedonia
  • Malta
  • Moldova
  • Monaco
  • Montenegro
  • Netherlands
  • Norway
  • Poland
  • Portugal
  • Romania
  • Russia
  • San Marino
  • Serbia
  • Slovakia
  • Slovenia
  • Spain
  • Sweden
  • Switzerland
  • Turkey
  • Ukraine
  • United Kingdom
States with limited
recognition
  • Abkhazia
  • Kosovo
  • Nagorno-Karabakh
  • Northern Cyprus
  • South Ossetia
  • Transnistria
Dependencies and
other territories
  • Åland
  • Faroe Islands
  • Gibraltar
  • Guernsey
  • Jersey
  • Isle of Man
  • Svalbard
Other entities
  • European Union
Telecommunications in North America
Sovereign states
  • Antigua and Barbuda
  • Bahamas
  • Barbados
  • Belize
  • Canada
  • Costa Rica
  • Cuba
  • Dominica
  • Dominican Republic
  • El Salvador
  • Grenada
  • Guatemala
  • Haiti
  • Honduras
  • Jamaica
  • Mexico
  • Nicaragua
  • Panama
  • Saint Kitts and Nevis
  • Saint Lucia
  • Saint Vincent and the Grenadines
  • Trinidad and Tobago
  • United States
Dependencies and
other territories
  • Anguilla
  • Aruba
  • Bermuda
  • Bonaire
  • British Virgin Islands
  • Cayman Islands
  • Curaçao
  • Greenland
  • Guadeloupe
  • Martinique
  • Montserrat
  • Navassa Island
  • Puerto Rico
  • Saint Barthélemy
  • Saint Martin
  • Saint Pierre and Miquelon
  • Saba
  • Sint Eustatius
  • Sint Maarten
  • Turks and Caicos Islands
  • United States Virgin Islands
Telecommunications in Oceania
Sovereign states
  • Australia
  • East Timor (Timor-Leste)
  • Fiji
  • Indonesia
  • Kiribati
  • Marshall Islands
  • Federated States of Micronesia
  • Nauru
  • New Zealand
  • Palau
  • Papua New Guinea
  • Samoa
  • Solomon Islands
  • Tonga
  • Tuvalu
  • Vanuatu
Dependencies and
other territories
  • American Samoa
  • Christmas Island
  • Cocos (Keeling) Islands
  • Cook Islands
  • Easter Island
  • French Polynesia
  • Guam
  • Hawaii
  • New Caledonia
  • Niue
  • Norfolk Island
  • Northern Mariana Islands
  • Pitcairn Islands
  • Tokelau
  • Wallis and Futuna
Telecommunications in South America
Sovereign states
  • Argentina
  • Bolivia
  • Brazil
  • Chile
  • Colombia
  • Ecuador
  • Guyana
  • Paraguay
  • Peru
  • Suriname
  • Uruguay
  • Venezuela
Dependencies and
other territories
  • Aruba
  • Bonaire
  • Curaçao
  • Falkland Islands
  • French Guiana
  • South Georgia and the South Sandwich Islands




Famous quotes containing the words central and/or office:

    It’s easy to forget how central the French people are in everything we mean when we say Europe.
    John Dos Passos (1896–1970)

    He [Robert Benchley] and I had an office so tiny that an inch smaller and it would have been adultery.
    Dorothy Parker (1893–1967)