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Integrated Services Digital Network (ISDN)
The D channel uses a protocol standardized by the International
Use of ISDN D
Channels
Telegraph and Telephone Consultative Committee (CCITT) for
setting up D Channel connections. The D channel can also be
used for low-speed packet transmission.
Audio Capabilities
The system features telephone-quality audio input and output
Audio Overview
capabilities. Port pinouts for the audio jack on the system unit
are provided in Appendix B.
Systems shipped with the OpenVMS AXP operating system
DECsound
include the DECsound application as part of the DECwindows
Application
Motif software package. DECsound is an easy-to-use software
application that lets you play back recorded messages, record
audio messages, mail recorded messages, and include recorded
messages in compound documents.
1–10 Introduction to Your System
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