Glossary

dual tone multi-frequency

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.

UCS 1000 R4.2 Administration 585-313-507

Issue 3 April 2000 648