Marketplaces

PCB Marketplace - Trading platform for unfinished PCBs. Developers and equipping companies are able to create production orders. Manufacturers are able to submit offers for these requests for quotation.
http://www.pcb-broker.com/

Arbinet-thexchange, Inc. - International spot market and exchange for wholesale voice minutes. Includes membership registration information.
http://www.arbinet.com/

RF Globalnet - Vertical exchange for the RF/microwave, and wireless industry. Includes registration information and news.
http://www.rfglobalnet.com/

Phonetrade - Mobile phone trading portal and exchange. Includes registration information and an escrow system.
http://www.phonetrade.com/

TelecomsTrader - Telephony industry forum for buying, selling or discussing IVR, VoIP, CTI, Internet and Computer Telephony.
http://www.telecomstrader.com/

Iber-X - International telecom exchange. Includes registration information and contacts. [English/Spanish]
http://www.iber-x.com/

Fiber Optics Online - A vertical marketplace including buyer's guide, jobs, ads, and product and services exchange.
http://www.fiberopticsonline.com/

Telecom Finders - Marketplace for new, refurbished and used telecom equipment.
http://www.telecomfinders.com/