audioselectports

The audioselectports program selects input or
output ports for audio devices, using the Multimedia Services
product. The availability of the ports and how many may be
selected will depend on what the particular device supports. Once
set, the ports will be used for all applications using Multimedia
Services, such as DECsound and audiorecord, until the ports
are reset or the mmeserver process is restarted.

If no port setting is specified, audioselectports will display
the available ports for the audio devices as well as
which ports are currently selected.
 

Additional information available:

Syntax