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Telecommunications Carriers - Canada

• Bell Canada The biggest, providing all types of telecom services nationwide through Bell (Ontario and Quebec), Aliant (Maritime provinces), Bell West (western provinces), sympatico ISP service, Bell Mobility cellular and other subsidiaries.
• Telus provides wireline service in Alberta and British Columbia, and wireless service nationwide through Telus Mobility
• Allstream, formerly AT&T Canada Corp., and prior to that, Unitel, and before that, CNCP Telecommunications. Reputed to have poor customer service.
• BCE Inc., formerly Bell Canada Enterprises Inc. A holding company which owns Bell Canada and other telecommunications companies.
• Entourage, an installation company in Canada, formerly Bell Canada employees.
• Globalstar Canada, the Canadian arm of the of the Globalstar low-earth-orbit satellite telephony system.
• London Telecom Network best known for flat-rate voice service, but also offers business and residential packages, Internet access and travel cards.
• MTS, the telephone company serving Manitoba, currently bidding to buy Allstream.
• NorthernTel, a telephone company in Ontario.
• Northwestel, a telephone company serving the Yukon, the Northwest Territories, Nunavut and northern British Columbia
• 151 Front St. West in Toronto, a carrier hotel in the building that was once the headquarters for CN Telecommunications.
• Ontario Telecommunications Association, formerly Ontario Telephone Association, the association of Ontario's independent telephone companies.
• Peer 1 Network Inc. ISP offers high performance bandwidth and server co-location facilities.
• Telus Québec, formerly Québec-Téléphone, Quebec's second-largest telephone company.
• Rogers Communications Inc. runs cable TV systems, owns Rogers AT&T Wireless (formerly Cantel), and publishes Maclean's magazine and other periodicals.
• SaskTel, Saskatchewan's telephone company.
• Télébec, another telephone company in Quebec.
• Teleglobe, Canada's overseas telecommunications carrier.
• Telesat Canada, Canada's domestic satellite carrier
• Vartec Canada, a dial-around long distance carrier.
• Yak Communications, a dial-around long distance carrier (10-15-945 from Montreal and Toronto)

Selected Telecommunications Carriers - U.S.A

• ALLTEL Corporation.
• AT&T Corporation.
• Association for Local Telecommunications Services.
• Association of TeleServices International (ATSI), a trade association for telephone answering services.
• Billing Concepts of San Antonio, a clearinghouse for telecommunications bills.
• Excel, a carrier whose services are sold on a multi-level marketing basis.
• Frontier Communications acquired by Citizen's communications. Includes the former Rochester Tel.
• j2 Global Communications fax-to-email services.
• MCI, formerly WorldCom.
• One Wilshire. A carrier hotel.
• Orbcomm. Satellite company.
• Pac-West Telecomm, Inc.
• SBC Communications Inc., formerly known as Southwestern Bell, Ameritech, Pacific Bell, Nevada Bell, and SNET.
• SDN Communications, an independent in South Dakota.
• Sprint
• SMS/800, the 800 Service Management System, the central database for the management of toll-free numbers in North America.
• Time Warner Telecom, a provider of metro-area broadband optical networks and services to businesses..
• VarTec Telecom, Inc.
• Verizon, the company born from the merger between Bell Atlantic and GTE.
• Western Union
• Wireless Communications Association International. Trade association promoting fixed wireless broadband access.

Telecommunications carriers and government agencies - other countries

• AHCIET, Association of Spanish-language telecom research centres and carriers.
• Albacom, a telecommunications carrier in Italy.
• AMC, Albanian Mobile Communications.
• Aliatel, a new telecommunications carrier in the Czech Republic. Site is in Czech only.
• Autorité de Régulation des Télécommunications, France's regulatory agency.
• Azercell, a cellular operator in Azerbaijan.
• Azerbaijan: Terracom
• Bezeq, Israel's largest telecommunications carrier.
• Anatel, Brazil's telecommunications regulator.
• British Telecom.
• Cable & Wireless Falkland Islands.
• Faroese Telecom.
• Cegetel, a private telecommunications carrier in France.
• Carrier 1, Europe's long distance carrier.
• Inter-American Telecommunication Commission (CITEL).
• Cofetel, Mexico's telecom regulator.
• D2 Privat, Germany.
• Deutsche Telekom, Germany.
• Dial 1602, a British carrier.
• Econophone, Zürich, Switzerland. Offers local telephone service and ADSL.
• Eurotunnel Telecom.
• Federated States of Micronesia Telecommunications Corporation.
• France's government telecommunications office.
• Japan's Ministry of Posts and Telecommunications.
• Kingston Communications (Hull) PLC, Hull, England.
• Maroc Telecom, Itissalat Al-Maghrib S.A., Morocco.
• Matav, a telecommunications carrier in Hungary.
• max.mobil, a mobile operator in Austria.
• Miditel, a telecommunications carrier in Mexico.
• Mobile Telephone Networks (MTN), South Africa.
• Morocco's regulator, Agence Nationale de Réglementation des Télécommunications (ANRT).
• New Zealand Post's telegram service.
• Oftel, the United Kingdom's telecommunications regulatory agency.
• The Personal Number Company, which provides 0700 phone numbers in the U.K.
• Slovak Telecom, Slovenske Telekomunikacie, s.p.
• Swisscom, the dominant carrier in Switzerland.
• Telfort, a telecommunications carrier in the Netherlands.
• PT. Telekomunikasi Indonesia.
• Telefonica of Spain.
• Tele Greenland.
• Telkom SA, South Africa's telephone company.
• Vodacom, a wireless carrier in South Africa.
• Vodafone

Telecommunications and VoIP Training

• Teracom Training Institute - telecommunications training and VoIP training Instructor-led training seminars, video/DVD courses, books and elearning on telecommunications, datacom, networking, IP, Voice over IP (VoIP), wireless, broadband and more.

Selected Manufacturers and Organizations

Telecom Hardware, Software and Service Development

• Nortel Networks
• Itechcentre is a new lab in Ottawa, a joint venture of Bell Canada and Nortel Networks, providing a complete captive network for development of Voice over IP and next-gen All-IP Network technologies and services.
• Lucent Technologies
• Avaya
• Alcatel - incorporating the former Newbridge Networks

Telecommunications: Canadian government agencies

• Canadian Radio-television and Telecommunications Commission.
• Industry Canada.
• Industry Canada's spectrum management and telecommunications page.
• Telecommunications Standards Advisory Council of Canada

Directories and "Yellow" Pages - Canada

• canada411 Free directory assistance for most Canadian locations.
• Sympatico, an ISP affiliated with Bell Canada.
• yellow.ca, a Canadian business listings database not affiliated with the phone companies.
• mytelus.com, a portal from Telus Corporation. Replaces the company's former alberta.com, myto.com and mybc.com portals. Its directory listings.
• Winnipeg Yellow Pages listings.
• mysask.com, a directory service and portal for Saskatchewan. Saskatchewan residential listings.
• SuperPages.ca, a Canadian directory database from Verizon Information Services.
• Zip411.net, a directory database from Tamec.

Telecommunications: U.S. government agencies

• Federal Communications Commission
• National Telecommunications and Information Administration, an agency of the U.S. Department of Commerce
• U.S. Air Force Communications Agency supports air and space operations by bringing to the fight expertise in the communications and information arena.

U.S. directory services

• bigyellow.com, the directory service of Bell Atlantic, has been merged into SuperPages.com
• SMARTpages.com, a directory service from SBC Communications Inc.
• DexOnline.com, formerly Qwest Dex, from the company that publishes white and yellow pages directories under contract with Qwest.
• Yellowbook.com
• RealPages.com, a directory service from BellSouth.
• SuperPages.com, a directory service from Verizon (formerly GTE).

Directory services - other countries

• British Telecom's directory enquiries service for the UK
• http://www.yell.com/, formerly British Telecom's Yellow Pages. See also http://www.yellowpages.co.uk/.
• Golden Pages, Ireland.
• 118 net, Portugal.
• Páginas Amarelas Internet, Portugal.
• Das Telefonbuch, Germany.
• Argentina.
• Teleinfo, Argentina.
• Yellow Pages, Australia.