AT&T Canada, Inc.
- Provides voice, data, and Internet telecommunications. (Nasdaq: ATTC)
- http://www.att.com/canada/

West Bengal Telecom
- Serves the Indian states of West Bengal (excluding the area served by Calcutta Telephones) and Sikkim.
- http://www.wb.bsnl.co.in/

BellSouth
- Local Exchange Carrier (LEC) with local to global offerings in voice, data and Internet.
- http://www.bellsouth.com/

ATX Communications
- Pennsylvania facilities-based provider offering voice, data, and wireless solutions. News, solutions, and careers included.
- http://atx.com/

ALLTEL Corporation
- Offer local telephone, wireless, long distance, Internet and paging service.
- http://www.alltel.com/

Aliant Inc.
- Provides local and long distance telephone, wireless, and Internet services in Canada's four Atlantic provinces.
- http://www.aliant.ca/

Detecon Al Saudia Co. Ltd.
- Deutsche Telekom Group investment in Saudi telecommunications. VSAT Service Provider.
- http://vsat.detasad.com.sa/

Shields Environmental
- Environmentally conscious equipment resource for telecom carriers. Offices in Europe, North America, and Asia. ISO 14001/EMAS.
- http://www.shields-e.com/

Jazztel p.l.c.
- Holding company with subsidiary which provides telecommunications and data services. (Nasdaq: JAZZ).
- http://www.jazztel.com/

FairPoint Carrier Services
- Provides services for vendors in the industry.
- http://www.fpcarrierservices.com/

Deutsche Telekom
- German telecommunications conglomerate that owns or operates services across Europe under the T-Mobile brand.
- http://www.telekom.de/

Telus
- Canadian operator principally in British Columbia and Alberta.
- http://www.telus.com

France Telecom
- French voice, data, and Internet company. In English and French.
- http://www.francetelecom.com/

Voice.Sky Communications
- Provides various VoIP services for carriers and resellers.
- http://www.voicesky.com/

Isis Telecommunications Management Ltd
- Independent provider of mobile and fixed services to UK businesses.
- http://www.isistelecom.com/

Interoute
- European carrier with offices in various countries.
- http://www.interoute.com/

Telefonica
- Spanish multi-national company operating throughout the Spanish and Portuguese-speaking world.
- http://www.telefonica.com/

CompleTel
- Providing services in France, Germany and in the UK.
- http://www.completel.com/

Covista Communications
- Facilities-based network, owns many brands, including Capsule Communications.
- http://www.covista.com/

Bell Telecommunication Philippines, Inc.
- Digital broadband network access provider using wireless access for last mile connectivity and fiber optic cables in the Central Business District for domestic, multinational and entrepreneurial companies operating in the Philippines.
- http://www.belltel.ph/

Bell Canada
- Information on products and services, promotional events, regulatory issues and leading-edge innovations.
- http://www.bell.ca/

Telecom New Zealand International
- Global provider of voice, data and IP solutions based in New Zealand.
- http://www.tnzi.com

Telstra Australia
- Mobile phone, internet, and wired telephone service provider to Australia, covering 94% of the population.
- http://www.telstra.com/

Telenor International
- Norway based communications, IT and media company.
- http://www.telenor.com/

MCI
- Global business and residential communications company operating in more than 65 countries.
- http://www.mci.com/

Cable and Wireless
- Global supplier of internet, data and voice solutions to business customers. Products, services, awards, and network details provided.
- http://www.cw.com/

Verizon Corporation
- Local Exchange Carrier (LEC). Offers long distance, data, and Internet services as well.
- http://www.verizon.com/

AT&T
- Provides long-distance, international and wireless services as well as internet access.
- http://www.att.com/

Qwest Communications
- Local Exchange Carrier (LEC), large wholesale and retail provider of voice and data services.
- http://www.qwest.com/

Sprint
- Global provider of voice, data and Internet services.
- http://www.sprint.com/

British Telecommunication plc
- National telecommunications provider. Details on products and services, plus user area.
- http://www.bt.com/