HP R4.2 Bedienungsanleitung Seite 687

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Glossary dual tone multi-frequency
UCS 1000 R4.2 Administration 585-313-507 Issue 3 April 2000 648
dual tone multi-frequency
A touch-tone sound that is an audio signal including two different frequencies. DTMF
feedback is the process of the switch providing this information to the system.
DTMF muting is the process of ignoring these tones (which might be simulated by
human speech) when they are not needed for the application.
dump space
An area of the disk that is fixed in size and should equal the amount of RAM on the
system. The operating system dumps an image of core memory when the system
crashes. The dump can be fetched after rebooting to help in analyzing the cause of
the crash.
E E&M
Ear and Mouth
E1 / T1
Digital telephony interfaces, commonly called trunks. E1 is an international standard
at 2.048 Mbps. T1 is a North American standard at 1.544 Mbps.
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