ZyXEL Omni 56K USB Lite User Guide - Page 87
Dslam, Eeprom
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DSLAM DSP DSR DTE DTMF DTR Echo EDR EEPROM EIA EMI Omni 56K USB Lite A Digital Subscriber Line Access Multiplexer (DSLAM) is a network device, usually at a telephone company central office, that receives signals from multiple customer Digital Subscriber Line connections and puts the signals on a high-speed backbone line using multiplexing techniques. Depending on the product, DSLAM multiplexers connect DSL lines with some combination of asynchronous transfer mode (ATM), frame relay, or IP networks. Digital signal processor. ZyXEL modems are equipped with this/these device(s). DSPs generate, process and analyze all signals. Data Set Ready - a control signal line of the RS-232C standard. Originally, the DTE (data terminal equipment) meant a dumb terminal or printer, but today it is a computer, or a bridge or router that interconnects local area networks. Dual Tone Multi-Frequency. The technology used in pushbutton telephones, commonly known as touchtone, of generating audible notes to represent numbers. Data Terminal Ready - a control signal line of the RS-232C standard interface. Some computers set this signal when they are turned on, even if they are not able to receive data. For a modem user, echo has two meanings: A modem can return all received characters to its local terminal/computer so they can be seen on-screen. The other meaning of the term "echo" is that part of the analog signal the modem sent out is bounced back by the telephone network to the modem's receiver, mixing there with the remote modem's signal. Extended Distinctive Ring - A feature of ZyXEL modems that helps to distinguish between data, fax and voice calls. An Electronically Erasable and Programmable Read Only Memory. Such a device is used in ZyXEL modems to store settings and profiles. An EEPROM does not lose data when the modem is turned off. Electronic Industry Association (of North America); this organization was the first to draft a standard serial port (RS-232C). ElectroMagnetic Interference. The interference by electromagnetic signals that can cause reduced data integrity and increased error rates on transmission channels. Glossary I