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Night Owl CD-ROM (NOPV9) (Night Owl Publisher) (1993).ISO
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038a
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zhint55.exe
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&Q6
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1993-04-14
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USE of &Q6, &Q5, &Q0 ,&Q8 and &Q9
Don Hinds
(this applies to Zoom V-series modems, not RPI based 'Axx' modems)
When you want protocol turned OFF, use the &Q6 command. Either typed
directly AT&Q6, or in the Dial Prefix AT&Q6DT. To turn it ON, AT&Q5 or
AT&Q5DT will do it. Sometime &Q0 will help when doing slower 'bauds' and
if you want to have a direct connect with NO MNP4 or v42 error correction.
The best place to do this is in the dial prefix, or directly typed in
terminal mode. The INIT string is not a good place, unless you want ALL
calls set that way.
If you know the connection will be MNP and not v42bis, then you may
want to turn OFF compression (MNP5) if you are transferring files. MNP5
tries to compress ALL files, slowing down the transfer of pre-compressed
files slightly. (V42bis will pass-through compressed files so does not have
to be disabled when transferring compressed files.) The &Q8 command will
set the modem to negotiate error MNP. S46=136 sets compression OFF.
AT&Q8S46=136 or AT&Q8S46=136DT. The use of &Q5S46=138 will restore full
negotiation. If you want MNP4/5 then leave out the S46= command. ALso using
AT&Q9(DT) will act as if S46=128 and &Q5. So you could leave S46=136 and
use &Q9 in place of &Q5.
The \N0 should not be used, because it also sets register 48 to 128.
The \N3 does not restore S48 to 7, so an additional command to to that
would be needed to restore S48 to default.
Don Hinds - Zoom Tech
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