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| Prestige 642 PPPoE Modem |
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| Interface | device or devices. A command line is the line on the display screen where a command |
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| is expected. Generally, the command line is the line that contains the most recently |
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| displayed command prompt. An interface is a set of commands (for example, a ZyXEL |
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| Command Line Interface) or menus (for example, a ZyXEL web configurator) used to |
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| communicate with a program. A |
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| enter commands. |
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| CPE |
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| Customer Premise Equipment. CPE is |
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| at an organization’s site that is attached to the telecommunication network. CPE |
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| includes routers, modems, PBXs, telephones, key systems, facsimile products, voice |
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| processing equipment and video communication equipment. |
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| Crossover |
| A cable that wires a pin to its opposite pin, for example, RX+ is wired to TX+. This |
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| Ethernet Cable |
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| cable connects two similar devices, for example, two data terminal equipment (DTE) or |
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| data communications equipment (DCE) devices. |
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| DHCP |
| Dynamic Host Configuration Protocol automatically assigns IP addresses to clients |
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| when they log on. DHCP centralizes IP address management on central computers that |
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| run the DHCP server program. DHCP leases addresses, for a period of time, which |
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| means that past addresses are “recycled” and made available for future reassignment to |
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| other systems. |
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| Domain Name |
| The unique name that identifies an Internet site. Domain Names always have two or |
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| more parts that are separated by dots. The part on the left is the most specific and the |
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| part on the right is the most general. |
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| DRAM |
| Dynamic RAM (Random Access Memory) stores information in capacitors that must |
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| be refreshed periodically. |
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| DSL |
| Digital Subscriber Line technologies enhance the data capacity of the existing twisted |
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| pair wire that runs between the local telephone company switching offices and most |
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| homes and offices. There are actually seven types of DSL service, ranging in speeds |
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| from 16 Kbits/sec to 52 Mbits/sec. The services are either symmetrical (traffic flows at |
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| the same speed in both directions) or asymmetrical (the downstream capacity is higher |
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| than the upstream capacity). DSL connections are |
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| meaning that they are always connected There is no |
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| switching, which means that the line is a direct connection into the carrier’s frame |
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| relay, ATM (Asynchronous Transfer Mode) or |
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| DSLAM |
| A Digital Subscriber Line Access Multiplexor (DSLAM) is a network device, usually |
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| at a telephone company central office, that receives signals from multiple customer |
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| Digital Subscriber Line connections and puts the signals on a |
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| using multiplexing techniques. Depending on the product, DSLAM multiplexers |
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| connect DSL lines with some combination of asynchronous transfer mode ATM, frame |
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| relay or IP networks. |
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| Embedded Web |
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| This is an |
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Glossary | C |