need WinXP drivers for Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400

Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK

On Mon, 13 Jul 2015 21:38:28 -0700, "Adam" wrote:


Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK

Have you tried the Dell website?

--
Remove del for email

"Barry Schwarz" wrote in message
...
On Mon, 13 Jul 2015 21:38:28 -0700, "Adam" wrote:


Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK

Have you tried the Dell website?

--
Remove del for email


Thanks, hope this is the right one.

Conexant D400 External USB 56K Modem Driver for WinXP
http://www.dell.com/support/home/us/...driverId=JC1CR

"Adam" wrote in message
...

"Barry Schwarz" wrote in message
...
On Mon, 13 Jul 2015 21:38:28 -0700, "Adam" wrote:


Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK

Have you tried the Dell website?

--
Remove del for email


Thanks, hope this is the right one.

Conexant D400 External USB 56K Modem Driver for WinXP
http://www.dell.com/support/home/us/...driverId=JC1CR


Driver was successfully installed.

However, I can't seem to send fax using MightyFAX v3.41 via DSL with filter.
Sending a minimal cover page takes FOREVER.
Same results with other 56k USB modems as well. Why?

Is it the software/MightyFAX? But an older MightyFAX v2.9z Build 10 is
able to send fax using a PC Card 56k modem in an old laptop running Win98SE
via
via DSL with filter. What gives?

Adam wrote:
"Adam" wrote in message
...
"Barry Schwarz" wrote in message
...
On Mon, 13 Jul 2015 21:38:28 -0700, "Adam" wrote:

Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK
Have you tried the Dell website?

--
Remove del for email

Thanks, hope this is the right one.

Conexant D400 External USB 56K Modem Driver for WinXP
http://www.dell.com/support/home/us/...driverId=JC1CR


Driver was successfully installed.

However, I can't seem to send fax using MightyFAX v3.41 via DSL with filter.
Sending a minimal cover page takes FOREVER.
Same results with other 56k USB modems as well. Why?

Is it the software/MightyFAX? But an older MightyFAX v2.9z Build 10 is
able to send fax using a PC Card 56k modem in an old laptop running Win98SE
via
via DSL with filter. What gives?



Simple. Change FAX setting from 14400 to 9600.

VOIP does not typically handle FAX tones well, and
so dropping to 9600 baud FAX mode may help.

Paul

"Paul" wrote in message
...
Adam wrote:
"Adam" wrote in message
...
"Barry Schwarz" wrote in message
...
On Mon, 13 Jul 2015 21:38:28 -0700, "Adam" wrote:

Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK
Have you tried the Dell website?

--
Remove del for email

Thanks, hope this is the right one.

Conexant D400 External USB 56K Modem Driver for WinXP
http://www.dell.com/support/home/us/...driverId=JC1CR


Driver was successfully installed.

However, I can't seem to send fax using MightyFAX v3.41 via DSL with
filter.
Sending a minimal cover page takes FOREVER.
Same results with other 56k USB modems as well. Why?

Is it the software/MightyFAX? But an older MightyFAX v2.9z Build 10 is
able to send fax using a PC Card 56k modem in an old laptop running
Win98SE via DSL with filter. What gives?


Simple. Change FAX setting from 14400 to 9600.


Thanks, (Guru Paul) I took a snapshot of the "Send Fax" dialog that
shows the Connect BPS to be 9600.
I can upload the snapshot but to which website?


VOIP does not typically handle FAX tones well, and
so dropping to 9600 baud FAX mode may help.


Yes, thanks for your detailed diagram and explanation posted to
the following thread..."how to connect PC Card Modem to laptop - please
help"
================================================== ===============
"Paul" wrote in message
...
Adam wrote:
"Adam" wrote in message
...
"ED" wrote in message
...
"Adam" wrote in message
...
Operating System: Windows XP
PC Card Modem: Psion Gold Card Global 56k + Fax

My old laptop had a couple of PC Card slots,
one of which was used for a PC Card Modem.
Now, I am interested in connecting this PC Card Modem to
my new Windows XP laptop, which does not have PC Card slots.
So, I am looking for a good PC Card Reader. Any suggestions?
Or, is there a better approach?

One of the following should suit your purpose:


http://www.newegg.com/Product/Produc...rder=BESTMATCH
&Description=usb+modem+56k
Thanks!!

Unless I hear otherwise, I guess I'll try the following ...
Rosewill RNX-56USB Conexant Hardware Based 56Kbps USB (Plug & Play)
V.92
Data/Fax/TAM Modem


It looks like I may need a PCMCIA USB adapter after all in order to
salvage my PC Card Fax Modem (which works with DSL) after all.
The problem is that many fax modems will not work with DSL.
And, Rosewill Tech Support just confirmed this.

Anyone with DSL using a 56k fax modem to send fax? If so,
what's the make/model of your 56k fax modem?

[Note - copy and paste the below into Notepad or equivalent,
and use Courier font, if you want to view the diagrams as I
drew them.]

I think before running off to the store, I'd slow down a bit first.

There are many kinds of phone lines, but some are obscure enough
we don't have to worry about them.

Two common situations now, involve "ordinary POTS" versus VOIP.

The definition of POTS is here - it's the old copper phone
line we had in the 50's, with 4KHz or lower bandwidth.

http://en.wikipedia.org/wiki/Plain_o...ephone_service

Some telephone companies are eliminating POTS service, in favor of
VOIP solutions. There might not even be a customer premise piece
of equipment doing the VOIP, so the difference might not even be
apparent to the home owner.

We can take my house as an example. I still have POTS, plus they
added ADSL to the line. I don't own a FAX machine, but if I did,
it would work. I can add at least four filters and taps to the
line if I want (I own four filters). Only one analog phone can
go off-hook at a time, so there is only "one line".

28KHz-1MHz DSL RJ45
Telco --------------------+---------------+----- ADSL
modem ------------
Computer
4KHz baseband | | ethernet
Filter Filter
4KHz or lower 4KHz or lower
| |
analog phone analog FAX
RJ11 connector RJ11 connector

In the previous diagram, I would be running a traditional, clunky,
standalone FAX machine. No computer involvement in the faxing process
in that example.

Now, if I wanted, I could use a FAX modem on the computer, like this.

28KHz-1MHz DSL RJ45
Telco --------------------+---------------+----- ADSL
modem ------------
Computer
4KHz baseband | | ethernet
|
Filter Filter
USB FAX
4KHz or lower 4KHz or lower
Modem
| |
|
analog phone
+---------------------------------+
RJ11 connector RJ11 connector

The previous diagram also works, because of the regular, reliable 4KHz
passband.

When the telephone company stops supporting POTS, they use VOIP or
voice over internet protocol. That can involve the ADSL modem. So
only the modem "sees" the phone line, like this. Now, there is
no 4KHz analog content at all. Just the modulation above 28KHz for
ADSL. The ADSL sees the full spectrum, just as before, because there
is no filter in front of the ADSL modem.

28KHz-1MHz DSL RJ45
Telco --------------------+---------------+----- ADSL
modem ------------
Computer
ethernet

To make it more transparent as to what is happening, now I add VOIP to the
picture,
and also include a router for more computers. VOIP is "downstream" of the
modem, and "upstream" of the router. The reason the first implementations
sat upstream of the router, was to make it easier to access all the port
numbers used by VOIP protocols (control path and data path). So this
diagram,
compresses that useless wire in the middle of the picture, to make more
room for the other junk.

28KHz-1MHz DSL RJ45 RJ45
RJ45
Telco ------------------ ADSL modem ---- VOIP 2 Port Box ----
Router ----- Computer
| RJ11 |
----- Computer
| |
(4KHz) (4KHz)
analog analog
phone FAX

Now, again, I can replace that clunky, separate "analog FAX" machine, with
a FAX modem on the computer. I'll run a line from the second computer,
which has a USB FAX or PCMCIA FAX device plugged into it.

28KHz-1MHz DSL RJ45
Telco ------------------ ADSL modem ---- VOIP 2 Port Box ----
Router ----- Computer
| RJ11 |
----- Computer
| |
|
(4KHz) (4KHz)
USB FAX
analog |
Modem
phone |
|

+----------------------------+
RJ11 connector

Now, what you're attempting to do, is run "FAX over VOIP". This is not the
same
as running "FAX over 4KHz baseband", as in the first diagram.

And that's what you need to research. What impairment does using VOIP
to *emulate* an analog phone service cause ? You need to be absolutely
certain, you know how your telephone company (or you yourself) have
arranged to make that "phone line" you're using. VOIP is a lot different
than an old POTS copper line.

So it's not really an argument about how sweet a particular
brand of FAX modem happens to be. It's an argument about
whether the phone line is "plain" or "VOIP" type.

In some households, the "VOIP box" is in the pedestal or outside
the house, and the home owner may not even be aware they're on
VOIP. Depending on when you did your setup (like some of
my samples above), you as the home owner may already be
aware you're using VOIP, because you actually own a VOIP
box sitting in the room with you.

Try search terms, such as "FAX over VOIP". One web page,
tries to sell you a different IP protocol to send faxes
(presumably, with a monthly bill). This web page, talks
of dropping the FAX transmission rate, to make it work.
The success or failure, might even depend on delay jitter
in the VOIP service. Who knows...

(site uses a lot of popup crap...)
http://askbobrankin.com/fax_over_voip.html

"The best tip I can offer is to reduce your fax transmission speed to
9600 bps to maximize VoIP fax success rates. The faster one tries to
send a fax, the more likely it is to fail on a VoIP connection."

Now, back to the discussion about which FAX modem is superior
to which other FAX modem :-)

Have fun,
Paul
================================================== ===============


There's also a good explanation and diagram link here...

Modems, Faxes and VoIP
http://www.almcom.net/Modems_and_VoIP.html
http://www.almcom.net/voipandpstn.html


Now it's crystal clear to me why not to send FAX over IP yet.
Voice is okay because voice is more forgiving.

The RJ11 connector is connected to the DSL filter,
which I doubt is VOIP since the old laptop is able to send FAX successfully.

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax


Current laptop FAX setup (which fails to send FAX)...
OS / FAX softwa Windows XP / MightyFAX v3.41
USB Modem: Dell NW147 56K USB Modem, Compatible Model Number: RD02-D400
[same for Rosewill RNX-56USB and TRENDnet
TFM-561U]


Paul

"Adam" wrote in message
...

"Paul" wrote in message
...
Adam wrote:
"Adam" wrote in message
...
"Barry Schwarz" wrote in message
...
On Mon, 13 Jul 2015 21:38:28 -0700, "Adam" wrote:

Where can I download WinXP drivers for the following...

Dell NW147 56K External USB Modem, Compatible Model Number: RD02-D400
http://www.amazon.com/Dell-NW147-Ext.../dp/B001L7IVCK
Have you tried the Dell website?

--
Remove del for email

Thanks, hope this is the right one.

Conexant D400 External USB 56K Modem Driver for WinXP
http://www.dell.com/support/home/us/...driverId=JC1CR


Driver was successfully installed.

However, I can't seem to send fax using MightyFAX v3.41 via DSL with
filter.
Sending a minimal cover page takes FOREVER.
Same results with other 56k USB modems as well. Why?

Is it the software/MightyFAX? But an older MightyFAX v2.9z Build 10 is
able to send fax using a PC Card 56k modem in an old laptop running
Win98SE via DSL with filter. What gives?


Simple. Change FAX setting from 14400 to 9600.


Thanks, (Guru Paul) I took a snapshot of the "Send Fax" dialog that
shows the Connect BPS to be 9600.
I can upload the snapshot but to which website?


VOIP does not typically handle FAX tones well, and
so dropping to 9600 baud FAX mode may help.


Yes, thanks for your detailed diagram and explanation posted to
the following thread..."how to connect PC Card Modem to laptop - please
help"
================================================== ===============
"Paul" wrote in message
...
Adam wrote:
"Adam" wrote in message
...
"ED" wrote in message
...
"Adam" wrote in message
...
Operating System: Windows XP
PC Card Modem: Psion Gold Card Global 56k + Fax

My old laptop had a couple of PC Card slots,
one of which was used for a PC Card Modem.
Now, I am interested in connecting this PC Card Modem to
my new Windows XP laptop, which does not have PC Card slots.
So, I am looking for a good PC Card Reader. Any suggestions?
Or, is there a better approach?

One of the following should suit your purpose:


http://www.newegg.com/Product/Produc...rder=BESTMATCH
&Description=usb+modem+56k
Thanks!!

Unless I hear otherwise, I guess I'll try the following ...
Rosewill RNX-56USB Conexant Hardware Based 56Kbps USB (Plug & Play)
V.92
Data/Fax/TAM Modem


It looks like I may need a PCMCIA USB adapter after all in order to
salvage my PC Card Fax Modem (which works with DSL) after all.
The problem is that many fax modems will not work with DSL.
And, Rosewill Tech Support just confirmed this.

Anyone with DSL using a 56k fax modem to send fax? If so,
what's the make/model of your 56k fax modem?

[Note - copy and paste the below into Notepad or equivalent,
and use Courier font, if you want to view the diagrams as I
drew them.]

I think before running off to the store, I'd slow down a bit first.

There are many kinds of phone lines, but some are obscure enough
we don't have to worry about them.

Two common situations now, involve "ordinary POTS" versus VOIP.

The definition of POTS is here - it's the old copper phone
line we had in the 50's, with 4KHz or lower bandwidth.

http://en.wikipedia.org/wiki/Plain_o...ephone_service

Some telephone companies are eliminating POTS service, in favor of
VOIP solutions. There might not even be a customer premise piece
of equipment doing the VOIP, so the difference might not even be
apparent to the home owner.

We can take my house as an example. I still have POTS, plus they
added ADSL to the line. I don't own a FAX machine, but if I did,
it would work. I can add at least four filters and taps to the
line if I want (I own four filters). Only one analog phone can
go off-hook at a time, so there is only "one line".

28KHz-1MHz DSL RJ45
Telco --------------------+---------------+----- ADSL
modem ------------
Computer
4KHz baseband | |
ethernet
Filter Filter
4KHz or lower 4KHz or lower
| |
analog phone analog FAX
RJ11 connector RJ11 connector

In the previous diagram, I would be running a traditional, clunky,
standalone FAX machine. No computer involvement in the faxing process
in that example.

Now, if I wanted, I could use a FAX modem on the computer, like this.

28KHz-1MHz DSL RJ45
Telco --------------------+---------------+----- ADSL
modem ------------
Computer
4KHz baseband | |
ethernet
|
Filter Filter
USB FAX
4KHz or lower 4KHz or lower
Modem
| |
|
analog phone
+---------------------------------+
RJ11 connector RJ11 connector

The previous diagram also works, because of the regular, reliable 4KHz
passband.

When the telephone company stops supporting POTS, they use VOIP or
voice over internet protocol. That can involve the ADSL modem. So
only the modem "sees" the phone line, like this. Now, there is
no 4KHz analog content at all. Just the modulation above 28KHz for
ADSL. The ADSL sees the full spectrum, just as before, because there
is no filter in front of the ADSL modem.

28KHz-1MHz DSL RJ45
Telco --------------------+---------------+----- ADSL
modem ------------
Computer

ethernet

To make it more transparent as to what is happening, now I add VOIP to
the
picture,
and also include a router for more computers. VOIP is "downstream" of
the
modem, and "upstream" of the router. The reason the first implementations
sat upstream of the router, was to make it easier to access all the port
numbers used by VOIP protocols (control path and data path). So this
diagram,
compresses that useless wire in the middle of the picture, to make more
room for the other junk.

28KHz-1MHz DSL RJ45 RJ45 RJ45
Telco ------------------ ADSL modem ---- VOIP 2 Port Box ----
Router ----- Computer
| RJ11 |
----- Computer
| |
(4KHz) (4KHz)
analog analog
phone FAX

Now, again, I can replace that clunky, separate "analog FAX" machine,
with
a FAX modem on the computer. I'll run a line from the second computer,
which has a USB FAX or PCMCIA FAX device plugged into it.

28KHz-1MHz DSL RJ45
Telco ------------------ ADSL modem ---- VOIP 2 Port Box ----
Router ----- Computer
| RJ11 |
----- Computer
| |
|
(4KHz) (4KHz)
USB FAX
analog |
Modem
phone |
|

+----------------------------+
RJ11 connector

Now, what you're attempting to do, is run "FAX over VOIP". This is not
the
same
as running "FAX over 4KHz baseband", as in the first diagram.

And that's what you need to research. What impairment does using VOIP
to *emulate* an analog phone service cause ? You need to be absolutely
certain, you know how your telephone company (or you yourself) have
arranged to make that "phone line" you're using. VOIP is a lot different
than an old POTS copper line.

So it's not really an argument about how sweet a particular
brand of FAX modem happens to be. It's an argument about
whether the phone line is "plain" or "VOIP" type.

In some households, the "VOIP box" is in the pedestal or outside
the house, and the home owner may not even be aware they're on
VOIP. Depending on when you did your setup (like some of
my samples above), you as the home owner may already be
aware you're using VOIP, because you actually own a VOIP
box sitting in the room with you.

Try search terms, such as "FAX over VOIP". One web page,
tries to sell you a different IP protocol to send faxes
(presumably, with a monthly bill). This web page, talks
of dropping the FAX transmission rate, to make it work.
The success or failure, might even depend on delay jitter
in the VOIP service. Who knows...

(site uses a lot of popup crap...)
http://askbobrankin.com/fax_over_voip.html

"The best tip I can offer is to reduce your fax transmission speed to
9600 bps to maximize VoIP fax success rates. The faster one tries to
send a fax, the more likely it is to fail on a VoIP connection."

Now, back to the discussion about which FAX modem is superior
to which other FAX modem :-)

Have fun,
Paul
================================================== ===============


There's also a good explanation and diagram link here...

Modems, Faxes and VoIP
http://www.almcom.net/Modems_and_VoIP.html
http://www.almcom.net/voipandpstn.html


Now it's crystal clear to me why not to send FAX over IP yet.
Voice is okay because voice is more forgiving.

The RJ11 connector is connected to the DSL filter,
which I doubt is VOIP since the old laptop is able to send FAX
successfully.

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax


Current laptop FAX setup (which fails to send FAX)...
OS / FAX softwa Windows XP / MightyFAX v3.41
USB Modem: Dell NW147 56K USB Modem, Compatible Model Number: RD02-D400
[same for Rosewill RNX-56USB and TRENDnet
TFM-561U]


Paul


If PC Card Modem is parallel, could that make the difference between success
vs. failure?

Adam wrote:


If PC Card Modem is parallel, could that make the difference between success
vs. failure?

This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul

"Paul" wrote in message
...
Adam wrote:


If PC Card Modem is parallel, could that make the difference between
success vs. failure?

This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul


If DSL+filter is VOIP, then I don't understand why the following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax

Adam wrote:
"Paul" wrote in message
...
Adam wrote:

If PC Card Modem is parallel, could that make the difference between
success vs. failure?
This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul


If DSL+filter is VOIP, then I don't understand why the following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax



This first one is my setup. I still get regular phone
service. If, instead of a phone, I connect the 56K dialup
modem, it connects at about 43K and it works. I haven't
used Freenet dialup in some time.

------+------- filter ----- phone (analog, i.e. POTS)
|
+---- ADSL modem ---- rest_of_networking_stuff

This is the other way of doing it. This is popular in some
areas, as the phone company divests itself of analog phone
service. The "dry line", no longer processes phone signals.
There is no phone service on the line.

------+------- filter -----X "dry line", no phone service, no dial tone
|
+---- ADSL modem ---- rest_of_networking_stuff
| |
VOIP1 VOIP2
| |
Analog Analog
Phone FAX machine

Customers using this second setup, are given boxes with
two RJ-11 jacks. Those are VOIP connections. The FAX machine
used in the second picture, should be set to 9600, to try to
get it to work.

As for the location of the VOIP jacks, the digital connection
tends to be "early" in the setup, and before the regular
router (where ever it is located). VOIP has control ports
and data path ports, and is a complicated protocol (because
it comes from the phone company). Because of the port numbers
and ranges it uses, it's just easier to place it before
the router. Even if the router function is inside the box,
and the ADSL thing is a modem/router.

Paul

"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:

If PC Card Modem is parallel, could that make the difference between
success vs. failure?
This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul


If DSL+filter is VOIP, then I don't understand why the following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax


This first one is my setup. I still get regular phone
service. If, instead of a phone, I connect the 56K dialup
modem, it connects at about 43K and it works. I haven't
used Freenet dialup in some time.

------+------- filter ----- phone (analog, i.e. POTS)
|
+---- ADSL modem ---- rest_of_networking_stuff


This is my FAX setup. The FAX RJ11 only plugs into the filter.

In this diagram...
http://www.almcom.net/voipandpstn.html
My FAX setup looks like Grandma's setup, the DSL+filter side.


This is the other way of doing it. This is popular in some
areas, as the phone company divests itself of analog phone
service. The "dry line", no longer processes phone signals.
There is no phone service on the line.

------+------- filter -----X "dry line", no phone service, no dial tone
|
+---- ADSL modem ---- rest_of_networking_stuff
| |
VOIP1 VOIP2
| |
Analog Analog
Phone FAX machine


This is FAX over IP and is "not" my FAX setup.
In my case, my VOIP adapter connects to a router,
which connects to the DSL modem.

In this diagram...
http://www.almcom.net/voipandpstn.html
My VOIP setup looks like Geek's setup.


Customers using this second setup, are given boxes with
two RJ-11 jacks. Those are VOIP connections. The FAX machine
used in the second picture, should be set to 9600, to try to
get it to work.

As for the location of the VOIP jacks, the digital connection
tends to be "early" in the setup, and before the regular
router (where ever it is located). VOIP has control ports
and data path ports, and is a complicated protocol (because
it comes from the phone company). Because of the port numbers
and ranges it uses, it's just easier to place it before
the router. Even if the router function is inside the box,
and the ADSL thing is a modem/router.

Paul

Adam wrote:
"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:

If PC Card Modem is parallel, could that make the difference between
success vs. failure?
This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul

If DSL+filter is VOIP, then I don't understand why the following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax

This first one is my setup. I still get regular phone
service. If, instead of a phone, I connect the 56K dialup
modem, it connects at about 43K and it works. I haven't
used Freenet dialup in some time.

------+------- filter ----- phone (analog, i.e. POTS)
|
+---- ADSL modem ---- rest_of_networking_stuff


This is my FAX setup. The FAX RJ11 only plugs into the filter.

In this diagram...
http://www.almcom.net/voipandpstn.html
My FAX setup looks like Grandma's setup, the DSL+filter side.


This is the other way of doing it. This is popular in some
areas, as the phone company divests itself of analog phone
service. The "dry line", no longer processes phone signals.
There is no phone service on the line.

------+------- filter -----X "dry line", no phone service, no dial tone
|
+---- ADSL modem ---- rest_of_networking_stuff
| |
VOIP1 VOIP2
| |
Analog Analog
Phone FAX machine


This is FAX over IP and is "not" my FAX setup.
In my case, my VOIP adapter connects to a router,
which connects to the DSL modem.

In this diagram...
http://www.almcom.net/voipandpstn.html
My VOIP setup looks like Geek's setup.


Customers using this second setup, are given boxes with
two RJ-11 jacks. Those are VOIP connections. The FAX machine
used in the second picture, should be set to 9600, to try to
get it to work.

As for the location of the VOIP jacks, the digital connection
tends to be "early" in the setup, and before the regular
router (where ever it is located). VOIP has control ports
and data path ports, and is a complicated protocol (because
it comes from the phone company). Because of the port numbers
and ranges it uses, it's just easier to place it before
the router. Even if the router function is inside the box,
and the ADSL thing is a modem/router.

Paul



So you're telling me, you pay for regular POTS phone
service, just to send FAX ?

And also have VOIP for voice calls ?

I presume the idea is, you wanted at least two lines,
a high quality one for traditional FAX, plus VOIP
for voice calls.

It's possible, without your knowledge, the POTS
line is being converted to digital somewhere (in the
crappy VOIP sense, rather than normal uncompressed
digitization). But I don't know how you'd go about
proving that.

It could be, that the recipients FAX machine is
connected to VOIP.

Paul

"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:

If PC Card Modem is parallel, could that make the difference between
success vs. failure?
This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul

If DSL+filter is VOIP, then I don't understand why the following
works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax

This first one is my setup. I still get regular phone
service. If, instead of a phone, I connect the 56K dialup
modem, it connects at about 43K and it works. I haven't
used Freenet dialup in some time.

------+------- filter ----- phone (analog, i.e. POTS)
|
+---- ADSL modem ---- rest_of_networking_stuff


This is my FAX setup. The FAX RJ11 only plugs into the filter.

In this diagram...
http://www.almcom.net/voipandpstn.html
My FAX setup looks like Grandma's setup, the DSL+filter side.


This is the other way of doing it. This is popular in some
areas, as the phone company divests itself of analog phone
service. The "dry line", no longer processes phone signals.
There is no phone service on the line.

------+------- filter -----X "dry line", no phone service, no dial
tone
|
+---- ADSL modem ---- rest_of_networking_stuff
| |
VOIP1 VOIP2
| |
Analog Analog
Phone FAX machine


This is FAX over IP and is "not" my FAX setup.
In my case, my VOIP adapter connects to a router,
which connects to the DSL modem.

In this diagram...
http://www.almcom.net/voipandpstn.html
My VOIP setup looks like Geek's setup.


Customers using this second setup, are given boxes with
two RJ-11 jacks. Those are VOIP connections. The FAX machine
used in the second picture, should be set to 9600, to try to
get it to work.

As for the location of the VOIP jacks, the digital connection
tends to be "early" in the setup, and before the regular
router (where ever it is located). VOIP has control ports
and data path ports, and is a complicated protocol (because
it comes from the phone company). Because of the port numbers
and ranges it uses, it's just easier to place it before
the router. Even if the router function is inside the box,
and the ADSL thing is a modem/router.

Paul


So you're telling me, you pay for regular POTS phone
service, just to send FAX ?


I have had this setup since FOREVER. And,
have been working toward a "dry line" setup,
which AT&T seems to be fighting against with
wording such as...
"oh if you disconnect POTS phone service, you may lose internet as well".


And also have VOIP for voice calls ?


I just recently added a new VOIP adapter for voice calls. And,
was hoping to be able to send FAX via the VOIP adapter until
I learned that FAX over IP won't work.

So then, I moved the USB FAX modem over to POTS,
thinking that it should work but nope.


I presume the idea is, you wanted at least two lines,
a high quality one for traditional FAX, plus VOIP
for voice calls.


No, it's a work in progress. I'm moving toward a "dry line" setup.

But, while I still have POTS phone service,
I thought I'd at least test out the USB FAX modem.


It's possible, without your knowledge, the POTS
line is being converted to digital somewhere (in the
crappy VOIP sense, rather than normal uncompressed
digitization). But I don't know how you'd go about
proving that.

It could be, that the recipients FAX machine is
connected to VOIP.


Which still doesn't explain...

If DSL+filter is VOIP (this scenario), then I don't understand why the
following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax


Paul

Adam wrote:
"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:

If PC Card Modem is parallel, could that make the difference between
success vs. failure?
This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul
If DSL+filter is VOIP, then I don't understand why the following
works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax

This first one is my setup. I still get regular phone
service. If, instead of a phone, I connect the 56K dialup
modem, it connects at about 43K and it works. I haven't
used Freenet dialup in some time.

------+------- filter ----- phone (analog, i.e. POTS)
|
+---- ADSL modem ---- rest_of_networking_stuff

This is my FAX setup. The FAX RJ11 only plugs into the filter.

In this diagram...
http://www.almcom.net/voipandpstn.html
My FAX setup looks like Grandma's setup, the DSL+filter side.


This is the other way of doing it. This is popular in some
areas, as the phone company divests itself of analog phone
service. The "dry line", no longer processes phone signals.
There is no phone service on the line.

------+------- filter -----X "dry line", no phone service, no dial
tone
|
+---- ADSL modem ---- rest_of_networking_stuff
| |
VOIP1 VOIP2
| |
Analog Analog
Phone FAX machine

This is FAX over IP and is "not" my FAX setup.
In my case, my VOIP adapter connects to a router,
which connects to the DSL modem.

In this diagram...
http://www.almcom.net/voipandpstn.html
My VOIP setup looks like Geek's setup.


Customers using this second setup, are given boxes with
two RJ-11 jacks. Those are VOIP connections. The FAX machine
used in the second picture, should be set to 9600, to try to
get it to work.

As for the location of the VOIP jacks, the digital connection
tends to be "early" in the setup, and before the regular
router (where ever it is located). VOIP has control ports
and data path ports, and is a complicated protocol (because
it comes from the phone company). Because of the port numbers
and ranges it uses, it's just easier to place it before
the router. Even if the router function is inside the box,
and the ADSL thing is a modem/router.

Paul
So you're telling me, you pay for regular POTS phone
service, just to send FAX ?


I have had this setup since FOREVER. And,
have been working toward a "dry line" setup,
which AT&T seems to be fighting against with
wording such as...
"oh if you disconnect POTS phone service, you may lose internet as well".


And also have VOIP for voice calls ?


I just recently added a new VOIP adapter for voice calls. And,
was hoping to be able to send FAX via the VOIP adapter until
I learned that FAX over IP won't work.

So then, I moved the USB FAX modem over to POTS,
thinking that it should work but nope.


I presume the idea is, you wanted at least two lines,
a high quality one for traditional FAX, plus VOIP
for voice calls.


No, it's a work in progress. I'm moving toward a "dry line" setup.

But, while I still have POTS phone service,
I thought I'd at least test out the USB FAX modem.


It's possible, without your knowledge, the POTS
line is being converted to digital somewhere (in the
crappy VOIP sense, rather than normal uncompressed
digitization). But I don't know how you'd go about
proving that.

It could be, that the recipients FAX machine is
connected to VOIP.


Which still doesn't explain...

If DSL+filter is VOIP (this scenario), then I don't understand why the
following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax


Paul



Maybe the alternative solution, uses slightly different
protocol (will do more retries when there are errors) ?
The signals themselves should be the same (both make
the same tones for 9600 or 14400 baud FAX).

You could record the audio signal being sent, but
I don't know if you can still get (safe) hardware
to connect to the sound card on your computer.

https://web.archive.org/web/20040215...interface.html

Some of the Radio Shack ones, don't use transformer
isolation, and are not compatible with the computer
sound card. They're intended for recording with
a battery operated cassette recorder (which floats).

Paul

"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:
"Paul" wrote in message
...
Adam wrote:

If PC Card Modem is parallel, could that make the difference
between success vs. failure?
This is a VOIP problem. The line quality ends up being not
as good as conventional POTS. And VOIP is designed to be
compatible with POTS, where the VOIP breaks into the POTS
network. What they didn't get right, is carrying the FAX
tones. FAX is more demanding that deciphering the human voice.

And someone wrote a nice doc for us, to explain where they
got it wrong. It's worse than I suspected.

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Paul
If DSL+filter is VOIP, then I don't understand why the following
works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax

This first one is my setup. I still get regular phone
service. If, instead of a phone, I connect the 56K dialup
modem, it connects at about 43K and it works. I haven't
used Freenet dialup in some time.

------+------- filter ----- phone (analog, i.e. POTS)
|
+---- ADSL modem ---- rest_of_networking_stuff

This is my FAX setup. The FAX RJ11 only plugs into the filter.

In this diagram...
http://www.almcom.net/voipandpstn.html
My FAX setup looks like Grandma's setup, the DSL+filter side.


This is the other way of doing it. This is popular in some
areas, as the phone company divests itself of analog phone
service. The "dry line", no longer processes phone signals.
There is no phone service on the line.

------+------- filter -----X "dry line", no phone service, no dial
tone
|
+---- ADSL modem ---- rest_of_networking_stuff
| |
VOIP1 VOIP2
| |
Analog Analog
Phone FAX machine

This is FAX over IP and is "not" my FAX setup.
In my case, my VOIP adapter connects to a router,
which connects to the DSL modem.

In this diagram...
http://www.almcom.net/voipandpstn.html
My VOIP setup looks like Geek's setup.


Customers using this second setup, are given boxes with
two RJ-11 jacks. Those are VOIP connections. The FAX machine
used in the second picture, should be set to 9600, to try to
get it to work.

As for the location of the VOIP jacks, the digital connection
tends to be "early" in the setup, and before the regular
router (where ever it is located). VOIP has control ports
and data path ports, and is a complicated protocol (because
it comes from the phone company). Because of the port numbers
and ranges it uses, it's just easier to place it before
the router. Even if the router function is inside the box,
and the ADSL thing is a modem/router.

Paul
So you're telling me, you pay for regular POTS phone
service, just to send FAX ?


I have had this setup since FOREVER. And,
have been working toward a "dry line" setup,
which AT&T seems to be fighting against with
wording such as...
"oh if you disconnect POTS phone service, you may lose internet as well".


And also have VOIP for voice calls ?


I just recently added a new VOIP adapter for voice calls. And,
was hoping to be able to send FAX via the VOIP adapter until
I learned that FAX over IP won't work.

So then, I moved the USB FAX modem over to POTS,
thinking that it should work but nope.


I presume the idea is, you wanted at least two lines,
a high quality one for traditional FAX, plus VOIP
for voice calls.


No, it's a work in progress. I'm moving toward a "dry line" setup.

But, while I still have POTS phone service,
I thought I'd at least test out the USB FAX modem.


It's possible, without your knowledge, the POTS
line is being converted to digital somewhere (in the
crappy VOIP sense, rather than normal uncompressed
digitization). But I don't know how you'd go about
proving that.

It could be, that the recipients FAX machine is
connected to VOIP.


Which still doesn't explain...

If DSL+filter is VOIP (this scenario), then I don't understand why the
following works...

Old laptop FAX setup (which is able to send FAX)...
OS / FAX softwa Win98SE / MightyFAX v2.9z Build 10
PC Card Modem: Psion Gold Card Global 56k + Fax


Paul


Maybe the alternative solution, uses slightly different
protocol (will do more retries when there are errors) ?
The signals themselves should be the same (both make
the same tones for 9600 or 14400 baud FAX).


Not sure what you mean by "alternative solution".

Based on MightyFAX status, it seems like it gets connection params from
the receiver before sending. There's some sort of handshaking.


You could record the audio signal being sent, but
I don't know if you can still get (safe) hardware
to connect to the sound card on your computer.


Since you mention "audio signal", I've noticed that
these Conexant USB FAX modems have much weaker tones compared to
the PC Card FAX modem on the old laptop that
is able to send FAX.

Hmmm...wonder if the weaker audio signals may have something to do with
not being able to send FAX successfully.


https://web.archive.org/web/20040215...interface.html

Some of the Radio Shack ones, don't use transformer
isolation, and are not compatible with the computer
sound card. They're intended for recording with
a battery operated cassette recorder (which floats).

Paul