Warwick, at 20:36 on May 17 1996, you wrote to Bill Grimsley...

BG> That's the new internal PnP model, but with the earlier ROM code (the
BG> later model is buggy, and has problems with V.42bis lockups).

WE> Yes, I have seen many postings from people with problems as above, and
WE> wondered why I wasn't having the same problem.

Different firmware.  For those affected, &K0 solves the problem anyway.

BG> change your dialling string for those boards to ATS54=96DT.

WE> Problem, that command is not accepted, and results with "error"?

Issue ATS$ whilst in terminal mode, and that will tell you almost all you
need to know about the higher S-registers.  I'm surprised that S54 returns
ERROR though.  Perhaps the PnP internals are quite different from earlier
models.

WE> I notice in the manual, that s38 is the highest value??

The V.34 Sportster manuals are hopelessly out of date.

WE> After another aborted handshake to Custom Built BBS, I looked at my ATI6
WE> screen, and the  message for "disconnect reason" was,
"XID timeout"

---------------------------------------------------------------
XID Timeout:  The modems failed to negotiate the V.42 Detection 
              (XID Exchange) phase. 
---------------------------------------------------------------

In that case, S27=48 (disable V.42 detect phase) should solve your problem.
 You'll still negotiate LAPM connects with those modems which support it.

WE> I changed the default value of S28 register from 008 to 012, and that seems
WE> to have given me access to Custom Built BBS?  Any comment on that change.

Can't see that helping with V.34 connects.  Have some quotes...

-----------------------------------------------------------------
NOTE:  While many modems on the market now use the more efficient 
speeds, there may be a problem in answering older, "dumb" V.32 
modems at 9600 bps.  Register S28 is used to modify the duration 
of the extra tones used in V.32 negotiations, in the rare instance 
that this may be necessary.  See S-Registers, in Appendix B.
-----------------------------------------------------------------

and...

-----------------------------------------------------------------
S28    8        Sets the duration, in tenths of a second, of the 
                extra 3000/600 Hz answer tones sent during V.32 
                handshaking.  This gives V.32 modems additional 
                time to connect in V.32 mode before timing out.

                If there is difficulty answering older, manually 
                operated V.32 modems, for example, modems that 
                require a button to be pushed in order to dial, 
                try lengthening the duration of the extra tones.
                Setting S28 to zero eliminates the extra tones, 
                resulting in a faster connect time if, for 
                example, the modem is set to use V.21 modulation 
                (300 bps) or V.23 modulation (1200 bps).
-----------------------------------------------------------------

Regards, Bill

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