Vector Product Manual
39
TROUBLESHOOTING THE
VECTOR
Because of the delicate nature of moving audio data over telephone lines,
it is likely that you will experience problems at some point with
establishing a reliable connection using the Vector. There are dozens of
factors that can affect the success or failure of a Vector call, some within
the users control and some not. Comrex has support personnel to help
troubleshoot problems which may occur, but please use this section first to
run down the most common issues when using the Vector.
1) Are you on an in-house phone system?1) Are you on an in-house phone system?
1) Are you on an in-house phone system?1) Are you on an in-house phone system?
1) Are you on an in-house phone system?
There are only so many times we can say this... an in house phone system
is almost always a bad idea with the Vector. If at all humanly possible, use
the Vector on a direct telephone company line. If you call for support, and
you are using an in-house phone system, the first request you are likely to
receive is to move the Vector to a direct, Ma Bell line.
2) Have you checked your audio quality going into the Vector?2) Have you checked your audio quality going into the Vector?
2) Have you checked your audio quality going into the Vector?2) Have you checked your audio quality going into the Vector?
2) Have you checked your audio quality going into the Vector?
Often problems with noise or distortion in audio are added before the
Vector, but since the Vector is the most mysterious link in the chain, it is
assumed to fail first.
Check your audio in and out of the Vector locally, by listening to the
local program output. Any noise or distortion present in the Vector audio
input will be present on this output. Next, enter the T
EST Mode (see page
31) and then select a loopback rate similar to the rate at which you have
been able to establish a connection. This will allow you to monitor audio
after it has gone through the encoder and decoder section. (Turn down
the local control and use the RETURN audio control to monitor this.) Due to
the extremely high compression of the Vector, some artifacts due to the
coding are unavoidable. Also check that your input level is correct and that
the VU meter on the Vector is not flashing into the red LEDs. You may also
wish to experiment between the Music and Voice modes (see page 25) as
some audio material may sound better in one mode than the other.
3) Have you disconnected all other devices from your lines?3) Have you disconnected all other devices from your lines?
3) Have you disconnected all other devices from your lines?3) Have you disconnected all other devices from your lines?
3) Have you disconnected all other devices from your lines?
Be absolutely certain that other fax machines, modems, etc. are removed
from your telephone line on each end, not simply disabled. Even on-
hook, some devices can affect the Vector performance. Also, their removal
will prevent anyone from inadvertently picking up the line during audio
transfer and causing the Vector to drop out.
SECTION 10. TECHNICAL DETAILS
(128 Seiten)
(4 Seiten)
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