networks & comms

Access this easy to use PC to phone service offering competitive prices. Make worldwide calls, set up an account and use the dialler to place Internet telephone calls.

Retailer that offers secure ordering of mobile phones, Playstation and Gameboy accessories, Eeprom programmers, DVD players and blank CD Media.

Get instant access to low cost international telephone calls, without requiring a credit card, account or separate bill. Browse worldwide call rates.

Browse the pricing structure of this cheap-call telecommunication service. Save money on business and mobile telephone calls.

Offers advice on mobile technology solutions for businesses. Includes a company profile and contact details.

Browse the online catalogue of this telephone equipment supplier. Also features a corporate profile.

Make international calls from a Mac or a PC with free VOIP Internet phone software. Get rates based on the destination of the call.

Register free to benefit from low-cost carrier 18866 for cheap international call rates, to land-lines and mobile phones. Find a tariff guide.

Agent for Alpha Telecom provides low-cost, international and national telephone calls from the UK to the world. Cut the cost of phone bills by signing up for an account.

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Offers free tests to candidates taking the CompTIA A+ exams including a section on networking.

CCNA revision resource including notes on spanning tree protocol, VLANS, IOS commands, and access control lists.

Read the latest networking-related news, feature articles and product reviews in this online publication.

Developer.com page offers advice and news on corporate intranet design and security.

Free networking tests on LAN and WAN concepts designed to test your knowledge before attempting the Cisco CCNA certification.

Short but helpful directory on communicating with FidoNet users. Step-by-step instructions on sending and receiving email.

Research project on the architecture of ATM-based local area networks and the algorithms for generating a general topology.

Familiarize yourself with Ethernet technology with this online tutorial. Once you complete it, test your knowledge by taking the quiz.

Comprehensive guide to the subject featuring discussion boards, events, news, jobs, FAQs and beginners guides. Includes articles and demos.

Valuable overview of structured cabling technology which compares benefits of various cable types.