From: Andreas Höschler (ahoesch@smartsoft.de)
Date: Wed Mar 22 2006 - 15:28:33 EST
Dear managers,
for a project we need three serial ports, two line-out and two line-in
ports in the 19" rack (server room). The sound that enters the line-ins
in the server room is to be forwarded to the line-out of a specific Sun
Ray used by the user on his desktop 50m away from the server room and
vice versa.
We are considering to use a SF 240 for this project (redundant power
supply, mirrored disks,...). Any idea how we could add the required
number of serial ports to the SF 240? I guess Sun does not offer and
support PCI cards that add serial ports. The same is probably the case
for the line-in and line-out lines. Our worst case idea would be to put
two Sun Ray 170's into the rack to get the interfaces we need, but this
approach is rather weird. Any better ideas?
We did some tests with pushing the audio data from one Sun Ray (Mic-In)
to another Sun Ray (Speaker) and had some success with the command
cat /tmp/SUNWut/dev/utaudio/1 > /tmp/SUNWut/dev/utaudio/2
However, the signal is delayed by 2-3 seconds. This might be ok for
one-way transmissions, but we need this for bi-directional human talk.
2-3 s delay is two long, it's like talking with someone on the moon.
Any idea what's causing this delay and how this could be optimized?
Thanks a lot!
Regards,
Andreas
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