XO Holdings gets down to the Xs and Os of business telecom services. The holding company for XO Communications provides telecommunications services to large corporations, small and midsized businesses, government agencies, and other telecom carriers over a network of about 1 million miles of metropolitan fiber. XO Communications offers local and long- distance voice, dedicated Internet access, private networking, data transport, and managed services such as Web hosting and bundled voice and data services. The company has more than 90,000 customers, including wholesale network access provider Covad Communications and network and IT services provider SAVVIS. Billionaire financier Carl Icahn controls 89% of XO.

This company aims to be the best option for the mobile professional in need of a communications solution. Option manufactures and markets broadband wireless equipment, such as data cards, embedded wireless modules, USB modems, wireless routers, and wireless software. Its products are used primarily in mobile phones and laptop computers. Founded in 1986, the firm depends on European customers for nearly three-quarters of its turnover and supplies to such heavyweights as Vodafone (its biggest customer), Telenor, Orange, Bouygues Telecom, and AT&T. Other customers include Acer, ASUS, Samsung Electronics, and Sony.

If listening in on a call serviced by Orange Switzerland, you are likely to hear a conversation in French, German, or Italian. Officially known as Orange Communications SA, the subsidiary of Paris-based Orange SA provides a variety of wireless telecommunications services to business and consumer customers in trilingual Switzerland. In addition to voice service, the company offers mobile messaging services, including email, Internet, and text-messaging. Parent company Orange is the leading mobile provider in France serving more than 110 million callers. The company agreed to merge with rival Sunrise Communications in 2009, but the deal was was blocked by the Swiss Competition Commission in 2010.

Orascom Telecom Holding (OTH) provides wireless communications services in the Middle East and beyond. Its serves about 80 million subscribers with GSM-based mobile networks in Algeria (market-leading Djezzy), Bangladesh (Banglalink), Egypt (Mobinil), Pakistan (Mobilink), Tunisia (Tunisiana), as well as in central and southern Africa, North Korea, and Canada. Orascom's mobile service operations account for the majority of its revenues, but the company also provides Internet service and other wired communications services, as well as network installation and support, procurement, and distribution services. The family of company founder and executive chairman Naguib Sawiris owns a controlling stake in Orascom.

Palm, once a leading provider of handheld computers, now develops and markets Internet-enabled mobile phones (known as smartphones). Its product line focuses on the Pre and Pixi wireless devices, which use Palm's webOS mobile operating system software. webOS is designed to wirelessly access the Web and take advantage of the phones' touchscreen interface. The company sells directly and through partnerships with such wireless carriers as AT&T, Sprint Nextel, and Verizon Wireless, as well as other distributors and retailers. While its products are sold globally, the majority of its revenue is made in the US. In 2010 Palm was acquired by top global computer maker Hewlett-Packard for about $1.2 billion.

The name Panasonic Mobile Communications rings in many ears. The company makes Panasonic-brand mobile phones and wireless base stations and terminals for building cellular communications networks. Panasonic also makes automotive electronics (such as car stereos and navigation systems), professional audio and video equipment, disk drives, electronic measurement equipment, and giant Astrovision video screens for sports arenas worldwide. Panasonic Mobile Communications is owned by Nippon Telegraph and Telephone (60%) and Matsushita Electric Industrial (40%).

As a former maker of doll's eyes, Panorama Antennas really has a bird's-eye view of the wireless communications market. The company was founded after WWII and now manufactures products used to build wireless communications networks. It sells its wireless equipment primarily to communications and electronics manufacturers. The company's antennas, adaptors, and associated hardware are used in voice and data network applications including cellular, GPS, mobile radio, LAN and WAN.

Pantech & Curitel is a master of mobile technology. One of the leading global makers of cellular telephone handsets, the company makes a variety of mobile products including handsets tailored for use in most major global cell phone markets, as well as fixed wireless terminals which enable the connection of traditional phones, fax machines, and other devices to wireless networks. Pantech & Curitel operates worldwide from about 20 regional sales offices. Outside of Korea, the company's key areas of operation include the Americas, China, India, Israel, and Japan. A member of the Pantech Group of wireless products manufacturing and distribution companies, its affiliates include Pantech Co. and Pantech C&I.

This Parrot has a Blue Tooth. Parrot markets a variety of wireless gadgets that use Blue Tooth wireless technology. The company's products, which include chipsets, USB dongles, home and car sound systems, wireless phones, hands-free kits, photo viewers, personal navigation devices, and a host of car accessories, are made by subcontractors. Parrot customers include car manufacturers, car accessories dealers, and the general public in more than 75 countries. The company has operations in the US and throughout Europe. Parrot is eyeing the US as its main expansion target. Founder, chairman, and CEO Henri Seydoux owns about 40% of the company.

Pentek Pentek provides electronic assemblies and single- board computers for cellular phones and other wireless devices, control and imaging equipment, radar and sonar systems, satellite communications, and telecommunications, among other applications. The company's digital signal processing boards use processors manufactured by Freescale Semiconductor and Texas Instruments. Its software radio products include transceivers and digital receivers. The company was established in 1986. Pentek's ownership is evenly split between co-founders Daniel Shamah (president) and Rodger Hosking (VP).

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