OT: slow dial-up verification

Modem dials, line picks up, handshake then v e r i f i c a t i o n . .
. . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

Modem dials, line picks up, handshake then v e r i f i c a t i o n . . .
. . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

"Robert Baer"<robertbaer_at_localnet.com> wrote in message
news:2NydnSrZ5P33q-vRnZ2dnUVZ_jSdnZ2d_at_posted.localnet...
Modem dials, line picks up, handshake then v e r i f i c a t i o n . . .
. . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.


It depends on the modem type. Is yours the celluloid or later bakelite or
case model?

Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

   Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
   I do remember seeing almost immediate verification.
   How do i restore that?
   Thanks.

Modem dials, line picks up, handshake then v e r i f i c a t i o n . .
. . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

Robert Baer wrote:
Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

56k modem ? They spend some time negotiating the reliable fastest
possible data rate over your connection. A possible sign of a growing
line fault ? Have you noticed any audible degradation on the line ?
Another tip - dial one number to kill the dial tone and listen for
noise. Could even be your telecom supplier working on lines and
re-routing your connection.

Can you not get broadband ?

Graham
I can get broadband, but cannot afford the extra $40 or so

"Robert Baer" <robertbaer_at_localnet.com> wrote in message
news:2NydnSrZ5P33q-vRnZ2dnUVZ_jSdnZ2d_at_posted.localnet...
Modem dials, line picks up, handshake then v e r i f i c a t i o n . . .
. . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.


It depends on the modem type. Is yours the celluloid or later bakelite or
case model?


US Robotics external voice/FAX modem.

On Aug 26, 4:40 am, Robert Baer <robertb...@localnet.com> wrote:
Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

Use a 300 baud or (possibly a 1200 baud) modem.
The time spent negotiating a connection speed and format using faster
modems could be better spent sending the short message using modems
that don't negotiate speeds or formats. For short messages, it's
actually quicker to use a slower modem.

If you're using Hayes command set compatible modems, look for the AT
Command or S-Register that control the connection speed.
Probably an S-register. Been a long time since I messed with dial-up
modems.
To my chagrin, i found that the US Robotics modem bastardized some of

On 26/08/2010 13:07, Dennis wrote:
"Robert Baer"<robertbaer_at_localnet.com> wrote in message
news:2NydnSrZ5P33q-vRnZ2dnUVZ_jSdnZ2d_at_posted.localnet...
Modem dials, line picks up, handshake then v e r i f i c a t i o n
. . .
. . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.


It depends on the modem type. Is yours the celluloid or later bakelite or
case model?

Most likely acoustic coupler to wet string.

Regards,
Martin Brown
No,no, no...dry string between juice cans for prisoners to talk =

In article <2NydnSrZ5P33q-vRnZ2dnUVZ_jSdnZ2d_at_posted.localnet>,
Robert Baer <robertbaer_at_localnet.com> wrote:

Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

For 56K, some time is spent analyzing the line and negotiating supported
features. Assuming you want to keep 56K, make then connection, ask your
modem for a dump of active features, and then force that feature set in
the initialization string. That will bypass the sometimes lengthy
process where different brands of modems keep getting in race and retry
conditions during negotiation. You'll need to associate that
initialization string with the phone number because it may not work in
general.
Huh? "Associate with phone number"??

Kevin McMurtrie wrote:
In article <2NydnSrZ5P33q-vRnZ2dnUVZ_jSdnZ2d_at_posted.localnet>,
Robert Baer <robertbaer_at_localnet.com> wrote:

Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

For 56K, some time is spent analyzing the line and negotiating
supported features. Assuming you want to keep 56K, make then
connection, ask your modem for a dump of active features, and then
force that feature set in the initialization string. That will bypass
the sometimes lengthy process where different brands of modems keep
getting in race and retry conditions during negotiation. You'll need
to associate that initialization string with the phone number because
it may not work in general.

Huh? "Associate with phone number"??

It depends on the modem type. Is yours the celluloid or later bakelite or
case model?

Most likely acoustic coupler to wet string.

Regards,
Martin Brown
No,no, no...dry string between juice cans for prisoners to talk =
their personal cell phone...

On Aug 27, 4:08 am, Martin Brown<|||newspam...@nezumi.demon.co.uk
wrote:
On 27/08/2010 09:47, Robert Baer wrote:





Kevin McMurtrie wrote:
In article<2NydnSrZ5P33q-vRnZ2dnUVZ_jSdn...@posted.localnet>,
Robert Baer<robertb...@localnet.com> wrote:

Modem dials, line picks up, handshake then v e r i f i c a t i o n .
. . . . . (...) . . connect [at last!].
I do remember seeing almost immediate verification.
How do i restore that?
Thanks.

For 56K, some time is spent analyzing the line and negotiating
supported features. Assuming you want to keep 56K, make then
connection, ask your modem for a dump of active features, and then
force that feature set in the initialization string. That will bypass
the sometimes lengthy process where different brands of modems keep
getting in race and retry conditions during negotiation. You'll need
to associate that initialization string with the phone number because
it may not work in general.
Huh? "Associate with phone number"??

The init string can be bound to the phone number of your ISP in the
dialup connectoid. You may find that certain blocks of their modems on
one number work better than others. The advice is good.

If as seems likely for a penny pinching cheapskate with a prehistoric
modem you are on a DACS'd phone line with lousy bandwidth then your best
bet is to force a V34+ connection at the start of negotiations.

Or force a maximum 56k data rate that is low enough that negotiation for
highest rate takes a much shorter time. 56k has never been instant but
is under 10s on a good day. The protocol tries hard to get a solution
but it is a lost cause if something inbetween you and the exchange is
redigitising the signal en route.

Generally V34 and earlier will do better on lousy cheap voice only phone
lines. It is not for nothing that bank machines use old modem protocols
with quick negotiation to send short pulses of data.

Since you are stuck with dialup you would be a lot better off with an
internal modem with a much deeper FIFO.

- Show quoted text -

I don't know if I would jump to this conclusion just yet....
Let's get him the right connect string, or the manual S-register
setting first and let him try that.

I'll try to dig out my old S-register cheat sheet (if I can find it).
The US Robotics brand was very popular, and I'm sure it uses standard
Hayes-compatible commands.