Dialup UK Article
- Dial-up Modem FAQ's
Q: How can I make fax modem
A: There are three popular standards
for fax modem commands used by fax software applications:
A low level standard, Class 1 mostly uses your fax software
and your host CPU to do the work. This gives you the most
control over the functioning. However, as the CPU is consumed,
slower systems may have problems sending and receiving faxes
in the background with Class 1.
Class 2 is mostly supported by fax software and takes much
of the low level load off of your system. This improves the
process of faxing in the background. This is particularly
useful if you have a slower system.
A true standard for higher level fax commands is Class 2.0.
This utility is not very popular among the faxing software
and not too many of them supports it. It is not compatible
with Class 2 but provides similar benefits.
Typical consumer fax modems have a number of weaknesses and
deficiencies. All of them cannot be overcome. But, there are
some tricks that you can try…
1. If you are having trouble getting fax use the software
that came bundled with your fax modem. While that software
may not be fully satisfactory, it will at least tell you whether
your fax modem is working properly or not.
2. Make sure that you have specified the correct fax Class
for your modem in your fax software.
3. Make sure that you have the latest updates for your fax
4. Make sure that you are using the recommended initialization
string for your modem.
5. Slower systems may have problems faxing at 14.4 Kbps. If
you are having problems, try dropping the maximum fax speed
down to 9600 bps. Slower systems in particular may not be
able to do much in the foreground without interfering with
background faxing, particularly with Class 1.
32-bit operating systems like OS/2 Warp, Windows NT, and
Windows 95/98 are better able to handle fax in the background
than 16-bit operating systems.
Q: How can I use a single phone
A: There are many dial up users in
UK who needs to share the same phone line for fax, data and
fax calls. This may look a little bit difficult but there
are solutions available to arrange this.
There are basically four methods of sharing an incoming phone
line. Here we discuss them…
Install a "Call Router" device on your regular
phone line. The cost is variable, depending on the available
features. You plug your modem, fax machine, answering machine,
and telephone line into the device. The device identifies
the incoming calls and directs them to the appropriate connected
Some devices do this with a series of voice prompts that
instruct the caller to press different phone buttons for different
services. Some devices do it by listening to the incoming
call and making a selection based on what they "hear."
There are however, Drawbacks to this method. The voice prompting
may confuse the caller. Additionally, your computer would
need a second modem to receive both fax and data calls.
2. This is a fax modem feature that is available with certain
modems that allows a fax modem to share a voice line. The
modem answers but does not use the normal fax answer tones.
Instead it listens for tones from a calling fax. If it hears
tones identifying a fax call, it automatically picks up the
call and goes into fax mode. Some may even cut off the answering
machine to listen to the call. Otherwise, it lets the call
go to the answering machine if it is not a fax call. The drawback
to this method is that it does not support data calls.
3. Obtain "Distinctive Ring" service with a modem
and software that support it. This service can be offered
by local telephone companies. They have to give user more
then one phone number for a single phone line. Each number
has a distinctive ringing pattern that can be detected by
An attached fax/modem and software that support Distinctive
Ring can identify whether the incoming call in on the fax,
data, or voice number and handle the call in the appropriate
manner. Distinctive Ring can also be used with certain kinds
of Call Routers. Distinctive Ring is usually less expensive
than having multiple phone lines. The drawbacks to this method
are the monthly charge applied for this service and the possibility
that the service may not be available in your area.
4. Use a modem and software that support incoming Call Discrimination.
This utility may also be called "Adaptive Answer"
or "Call Select". Some fax/data modems can discriminate
between fax and data calls and function accordingly. A voice
modem can also be used as most of them can distinguish between
fax, data, and voice calls.
The modem answers the call and uses a combination of listening
tones and trying to determine the type of incoming call. A
voice modem and appropriate software can also employ voice
prompting like certain Call Routers. The modem then notifies
the software of the type of call. The software notifies the
user and takes the appropriate action depending upon the type
of call. Some modems do a better job of Call Discrimination
than others. The only problem is that good software that supports
Call Discrimination has been hard to find!!
Q: How can I connect my modem
to a digital phone system?
A: If you are a typical hoe user accessing
internet with a dial up connection with your phone line then
you may encounter this problem. Typically, your modem may
not work on the kind of digital phone that you find in corporate
offices and hotel rooms. It is also can be hard to find a
standard phone jack when you need one. However, there are
a number of devices on the market that supports this arrangement.
All you have to do is that you have to disconnect the handset
from a digital phone and plug the handset into the device.
The device then is plugged into the handset jack on the phone.
Then, you connect your modem to the device with a standard
Q: How can I improve game play
A: There are millions of users like
you who like to play online games. If the gaming application
is smaller then you may find the online gaming very smooth.
But if the game uses very high-end graphics then you may have
problem while playing that Game online. In some, cases the
game becomes ridiculously slow or even hold up.
Here, the key is to reduce the time it takes for game play
signals to travel from your computer to the remote computer
and vice versa.
Here are some suggestions for your use..
1. Higher serial port speed slightly reduces latency. Here
try and Increase your serial port speed as much as you can
without causing overruns.
2. While connecting over the Internet, watch out for poor
Internet network performance. Different ISP may have different
Internet connectivity. A different ISP may give you much better
3. Internet network performance can vary greatly by time.
Try connecting at different times. This will give you an idea
when the network has lesser load.
4. Use the "ping" utility to measure round-trip
time and packet loss percentage when you suspect network performance
5. Do is disable error control and data compression! Recommendations
to do that are myths and are not supported by the facts.
6. Some people use lower modem speed up to 9600 bps in order
to reduce the error rate over the modem connection. However,
that only makes things worse.
The moral here is that the shorter the response time, better