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Asynchronous transfer mode (ATM) is a high-speed, point-to-point, switched network technology that uses fiber optic or Category 5 (Cat-5) copper cabling. ATM transmits data in cells rather than frames and can carry text, audio, and video. Each cell is a packet that contains 5 bytes of routing information and 48 bytes of data. Basic networks run at 155 Mbps, but implementations that use fiber optic cable can achieve speeds as high as 660 Mbps. The basic desktop standard runs at 25 Mbps. Products & Services
Single board computers (SBC) serve as the motherboard for instrumentation systems including modern PCs. SBCs are composed of a microprocessor, memory chip, and serial and parallel interfaces to communicate with other devices.
Network analyzers and protocol analyzers are test equipment used to troubleshoot and analyze network problems.
Bit error rate testers are devices or procedures that measure the bit error rate (BER) for a specific transmission.
Network hubs serve as the central location for attaching wires to workstations.
Network switches route packets between ports at the OSI layer 2, which means that (in Ethernet) the switches decide where incoming packets are transferred to, based on the NIC's 48-bit address.
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Topics of Interest
Asynchronous transfer mode (ATM) is also known as cell relay. It is primarily a fiberoptic
transmission system and is highly suitable for that medium as the very small transmission
packet called a...
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The two DDS digital signaling channels—a digital service unit (DSU) and its corresponding
channel service unit (CSU)—transmit up to 56 Kbps (actually a multiplexed DS0), offering
digital...
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Absorption: The portion of optical attenuation in an optical fiber resulting from the conversion of optical power to heat; caused by impurities such as hydroxyl ions in the fiber.
A/B Switch: A...
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Our brief discussion of wide area networks has hopefully familiarized you with some of the
outside services and terminologies. Many wide area networks are in service today—many of
them...
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Numerous customer configurations require a distributed PBX common
equipment design that supports a single system image for all features,
functions, and operations. These configurations include a...
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Technical Articles
IEC Web ProForum Tutorials
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Telecommunication Tutorial
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Technical Resources - Glossary
- Wires, Cables, and Accessories
Data Communications Tutorial (.pdf)
- Computer Peripherals
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