Dying gasp
This article is about the type of telecommunications signal. For the last words of a dying person, see Dying declaration. For the sound produced by someone near death, see death rattle.
A dying gasp is a message (or signal) sent by the customer premises equipment (CPE) DSL device to the digital subscriber line access multiplexer (DSLAM) when a power outage occurs. A DSL interface with dying gasp must derive power for a brief period from another source so that the message can be sent without external power. The dying gasp message will end the session and a new session will be able to be made as soon as power returns and the modem retrains.
Dying Gasp is referenced in section 7.1.2.5.3 of ITU-T Recommendation G.991.2 (12/2003) as the Power Status bit.
See also
- Digital Subscriber Line (DSL)
External links
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