| 单词 | always on |
| 释义 | always on Referring to a continuous Internet connection. Such a connection is always available from the computer through the service providers central office (CO) or headend and to the Internet. Therefore, there are no dial-up delays such as those experienced when using a conventional modem to establish a circuit-switched connection to the Internet over the public switched telephone network (PSTN). The term generally is used to describe xDSL or cable modem services. See also cable modem, circuit-switched, CO, headend, Internet, modem, PSTN, and xDSL. |
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