[Wolves] how do I check if a sound driver is full duplex?

[David Morley]

how do I check if a sound driver is full duplex?  Basically I have
started to try and use Ekiga but it says it can't open audio device
saying it's not full duplex.  Everything online says nothing about how
to check, or how to turn it on in gnome.  Help please I know it is
going to be something daft but I can't find an answer anywhere.

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