RE: Are BT serious?

[Keith Doxey <keith.doxey@xxxxxxx>]

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Hi Mark,

Failure to dial correctly sounds as if the DTMF tones are out of spec
either
level, speed of dialling, or interdigit pause. Did you try pulse dialling?

Failure to connect at high speed has one other undesirable side effect....
Modems try to train at the highest speed possible first, and drop down the
scale until they find a suitable connection speed. As the speed of modems
has now increased to 56kbps there a many possible connection speeds and it
is possible for Windows DUN to time out before successfully negotiating a
connection. Of course this is inapplicable when you dont even get through
in
the first place !!

One other point that I remember from a fax course I did in 1991.
Certain manufacurers build in additional features to chipsets. I remember
that Panasonic Fax Machines sent a proprietry code that effectively said
"I'm a Panafax" and the other machine would either ignore it if
it was a non
Panasonic and continue to train normally or in the case of a Panasonic fax
it would say "So am I" and set itself up much quicker.

Its possible that the server is using 3Com technology and setting itself up
better. I know there are some modems that are very fussy about what they
connect to Ascend/3Com/Cisco etc.

One thing that is standard in all telecomms user guides is a statement to
the effect that just because it has a green spot doesnt mean it will work
in
all possible applications :-(

Glad you solved your problem though

Keith

-----Original Message-----
From: Mark Harrison [mailto:Mark@xxxxxxx]
Sent: 22 September 2000 11:11
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Are BT serious?


Guys,

Thanks all for the suggestions and advice. I think it very likely that my
customer has a DACS line. However, the problem was NOT one of inability to
connect at high speed. It was total failure to dial correctly 9 times out
of
10. (To the extent that we got a "number you have called has not been
recognised.)