Verissimo Technologies
- Distributor of new, surplus, and refurbished central office networking equipment. [Requires Javascript for proper operation]
- http://www.verissimotech.com

White Rock Networks
- Provides carriers with a building-block type family of metro optical transport systems focused on SONET, CWDM, DWDM, and Ethernet.
- http://www.whiterock.com/

Carrier Access Corporation
- Provides multi-service digital access equipment to competitive telecommunications carriers, including competitive local exchange carriers, internet service providers and wireless carriers. (Nasdaq: CACS).
- http://www.carrieraccess.com/

Innovative Communications Technologies Inc.
- Offers "private telephone network" product, similar to IP Telephony, without using public infrastructure.
- http://www.ict.net/

Extel Communications
- Products to extend the capacity and range of existing telephone networks, allowing previously isolated consumers, such as those found in rural and regional areas.
- http://www.extel.com.au/

Turin Networks Inc.
- Provider of multi-service optical transport products for service providers.
- http://www.turinnetworks.com/

Pacstarcom
- Provides solutions for wireless, voice and data communications equipment.
- http://www.pacstarcom.com/

Bayly Communications Inc.
- Providing telecom transmission and network access equipment, T1/E1 multiplexers, T1/E1 channel banks, and digital cross-connect switches.
- http://www.bayly.com/

Valiant Communications Limited
- Provides a wide range of telecommunications transmission equipment.
- http://www.valiantcom.com/

Used Telecoms
- Used telecom equipment broker specialising in PBX and carrier equipment. Brighton, UK
- http://www.usedtelecoms.com/

US Telecom Supply
- Provider of telecommunications equipment, including: central office switching, transmission, fiber optics, DSL products, batteries and power, wire and cable and other central office hardware.
- http://www.ustelecomsupply.com/

Bhumika
- Telecom Transmission solutions, E1 GSM Gateway, T1 GSM Gateway, Multiplexers, Echo Canceller and other transmission equipment.
- http://www.bhumika.ca/

Harmer & Simmons
- DC Power Supplies and switch mode rectifiers for telecoms. Modular power systems integrate rectifiers, alarm, distribution, low volts disconnect, power management systems and battery backup. UK based.
- http://www.harmerandsimmons.com/

CES International, Inc.
- New and refurbished tandem and central office switching and transmission equipment, installation, test and repair services and custom cable assembly manufacturing.
- http://www.cesinternational.com/

Aries Telecom
- Supplier of GSM gateways, GSM and STM-1 multiplexers, E1 channel banks, Echo cancellers and E1 drop-insert multiplexers.
- http://www.ariestelecom.com/

Nucomm
- Provider of digital and analog video microwave systems for the broadcast industry, common carrier, cable, government, military and international marketplace.
- http://www.nucomm.com/

Bell Enterprise
- Providing new and used Central Office products and PBX equipment.
- http://www.bell-enterprise.com/

ARCOMM Telecommunciations
- Online database of used equipment. Specializing in Lucent #5ess switching equipment along with additional Central Office equipment.
- http://www.ar-comm.com/

Tele-Source Industries Inc.
- Providing customer solutions to a wide range of customers for telephones, parts and service.
- http://www.tele-source.com/

Carolina Communications Service, Inc.
- Resellers of telecommunications equipment.
- http://www.carolinacomminc.com/

West World Communications
- Supplier of circuit guards, tagging devices and protectors.
- http://www.westworldcommunications.com/

Central Office Systems
- Buy and sell new and refurbished central office and transmission equipment.
- http://www.c-o-systems.com/

Aculab
- Provider of open standards-based components for the computer telephony industry. Products include digital access cards (E1, T1 and Basic Rate ISDN), speech and signal processing platforms, fax processing, speech recognition and text-to-speech.
- http://www.aculab.com/

Lexcom Telecommunications
- Supplier of central office switching and transmission products and services.
- http://www.4lex.com/

Emerson Energy Systems
- A global supplier of energy solutions for telecommunications platforms.
- http://www.emersonenergy.com/

Walker and Associates
- Distributor partnering with more than 200 suppliers of telecommunications equipment.
- http://www.walkerassoc.com/

G.A.S. International Inc.
- Suppling telephone equipment for Central office's, Hotel, Motels and large switches.
- http://www.gasint.com/

Radyne ComStream Inc.
- Designs and manufactures Satellite and cable equipment for Internet, Data, Telephone and Digital Television.
- http://www.radynecomstream.com/

WizCom International, Ltd.
- Provider of Global Distribution Systems (GDS) and internet connectivity, Central Reservations Systems (CRS) and information services to the hotel, car rental and tour industries.
- http://www.wizcom.com/

TelExpress, Inc.
- Distributor of surplus and refurbished telecommunications equipment for the Central Office.
- http://www.telexpressinc.com/