Glossary
| CAP | Carrierless Amplitude Phase Modulation. A two- |
| dimensional line code used in ADSL. |
| Crosstalk | Line noise that occurs due to coupling of signals |
| between pairs in the same bundle. |
| Downstream | The direction of data reception from the Megabit |
| Modem |
| Ethernet | A baseband LAN specification that has become a |
| series of standards produced by IEEE referred to as |
| IEEE 802.3. |
| HDLC | |
| Hub | A common wiring point for |
| and a common synonym for a concentrator. |
| IEEE | Institute of Electrical and Electronics Engineers. |
| A professional organization that defines network |
| standards. |
| I/F | Interface or Interface Card. |
| ISP | Internet service provider. |
| kbps | Kilobits per second. A measure of transmission |
| speed at 1,000 bits per second. |
| kpps | Kilo packets per second. |
| LAN | Local Area Network. The means by which a local |
| community of users and workgroups can share |
| information and resources electronically. |
LED | Light emitting diode. |
| Line code | Any method of converting digital information to |
| analog form for transmission on a communicaton |
| line. |
| Link | Another term used for transmission line. |
| MAC | Media Access Control. Associated with Layer 2 |
| or the Data Link Layer of the ISO |
| protocol model. |
| Margin | An ADSL parameter, measured in dB. It indicates |
| the excess SNR, relative to the performance of |
| BER, at the receiver point. |
|
|
74 | Megabit Modem |