Problems with phone number dialing
Long-distance number cannot be
dialed
Disconnection with message "Modem
did not detect dial tone"
Problems with fax reception
Received fax is "garbled",
with numerous artifacts
Only part of a document can be received
Problems with fax transmission
Only the start of a document
can be transmitted
Fax cannot be transmitted in
automatic mode
Fax cannot be transmitted in manual
mode
Problems with the answering machine
Answering machine responds when
dialing a number on a telephone extension
Disconnection while playing
an announcement
Disconnection with message
"Handset lift detected on the telephone connected to
modem or telephone extension"
Unacceptable quality of
recording/playing sound via modem
Emulated tone fading
Connection was terminated during answer
on the first ring with completion code Er 23
Answering machine announcement
is too quiet
The answering machine records
only partial messages or does not record messages at all
Problems with Caller ID
Caller ID does not work
Other Problems
Connection is terminated with
message "Unforeseen error while receiving data from
modem"
Long-distance
number cannot be dialed
This problem often occurs when the modem is waiting for
a particular continuous signal from the telephone company's
switch, which is required after dialing a certain digit,
such as the prefix for the long-distance line. In this case
the telephone number usually contains the letter W
("wait"). Generally the modem's default waiting
time is 2 seconds. If the telephone company's switch does
not respond with a continuous signal within that time, dialing
will stop. The program will return Error 25, Modem did
not detect dial tone. To correct this situation you
can increase the value of the corresponding modem register.
This is recommended for experienced users, who know how
to do it. Another way to increase the waiting time is to
change the Dial modifier to await second dial tone
setting under the Transmission - Dialing - Advanced
tab from "W" to ",W" or
even to several comma marks, if the modem does not detect
the second dial tone. Each comma represents a two-second
pause.
Disconnection
with message "Modem did not detect dial tone"
Possible causes: a conversation is ongoing on a telephone
extension, the modem is not connected to the telephone line,
or there is a telephone line fault. Sometimes the modem
is unable to discern a dial tone, most likely because it
is a non-standard dial tone. For example, the signal to
dial a number may consist of two short tones instead of
a continuous tone, as with some Private Branch Exchanges
(PBX). In this case uncheck the Wait for dial tone before
dialing setting under the Transmission - Dialing
- Advanced tab.
If your modem works properly with other dialer programs,
but is unable to dial a number with Venta4Net, it could
be because some modems operate differently in voice, fax
and data mode. In this case enable the Dial a number
in data mode before entering voice mode setting under
the Transmission - Dialing - Advanced tab.
The modem may not detect the long tone in the telephone
line that's expected after some part of the phone number
is dialed, for example, after the long-distance call prefix.
In this case replace the Dial modifier to await second
dial tone setting value with several comma marks, simply
to create a pause instead of waiting for a second dial tone.
Received
fax is "garbled", with numerous artifacts
This can happen due to heavy noise in the telephone line.
Try disconnecting and dialing the number again. Chances
are the line quality will be better.
Frequently users worsen the connection quality themselves,
trying "to check" fax reception by listening to
the telephone line on an extension. This introduces considerable
noise, which has a negative effect on reception quality.
If you don't want to miss a chance to chat with your fax
mate (interlocutor), you need to select Confirm actions
in manual mode before disconnection under the Fax
- General tab.
Also make sure that error correction mode (ECM)
under the Fax - Error Correction (ECM) tab is enabled.
Only
part of a document can be received
Often the modem terminates fax reception at 9600 and higher
baud rates because of slight noise in the telephone line.
Thus, many received faxes appear "cut off". To
improve fax reception quality, limit the maximum reception
rate to 4800 bps under the Fax - Rate Limits tab.
We recommend you use the Fax Class 1.0 command set, if your
modem can detect one. In this situation, reception stability
depends on the Delay from moment of carrier loss to hang-up
during fax reception setting under the Fax - General
tab.
Only
the start of a document can be transmitted
Usually this happens due to incorrect flow control method
selection. See Flow control setting status under
the Connection - Modem - Fax tab.
Fax
cannot be transmitted in automatic mode
A session might end with the error Recipient answered
but did not start fax reception (Er 76) or the Connection
error (Er 18). The solutions listed below apply to situations
where a fax is transmitted with the modem's voice functions
enabled (in order to detect a voice answer, for example).
The reason for this may be the following: some modems (US
Robotics, SmartLink, PCTel chip-based modems and possibly
some others) cannot start facsimile message transmission
until they detect the remote fax initial whistle (the pilot
tone). You should probably select the Disable voice mode
when sending a fax setting under the Fax - General
tab, so that the modem does not miss the initial response
of the remote fax when it switches to fax mode after detecting
the voice answer.
Another reason may be an incorrect Command for starting
fax transmission with established connection setting.
Some modems are unable to send a fax after a voice mode
operation without resetting. If this is the case, first
try enabling the Reset modem when entering fax or data
mode after voice mode setting under the Connection - Modem - Advanced tab instead of the Disable
voice mode when sending a fax setting.
Fax
cannot be transmitted in manual mode
Some modems (US Robotics, SmartLink, PCTel chip based modems
and possibly others) cannot start facsimile message transmission
until they detect the remote fax initial whistle (the pilot
tone). If you use one of these modems, then when in manual
transmission mode you should start sending earlier so that
the modem does not miss this tone (whistle).
Another reason may be an incorrect Command for starting
fax transmission with established connection setting.
Answering
machine responds when dialing a number on a telephone extension
This can only occur with pulse dialing. The problem is
not with the program but with the modem, as the modem is
what detects incoming calls and informs the program of them.
In this case the modem confuses pulse dialing signals with
an incoming ring. Unfortunately, it is impossible to get
rid of this effect using the program. All you can do is
to increase the number of rings before the modem goes off
the hook by changing the Answer on, ring setting
under the Reception - Automatic tab.
Disconnection
while playing an announcement
Disconnection happens because the modem detects short tones
on the telephone line. The caller probably hung up during
playback of the announcement. If disconnection during announcement
playback occurs regularly, you should probably deselect
the Recognize telephone line state - for incoming calls
- with modem setting under the Voice - Signal Recognition
tab.
Disconnection
with message "Handset lift detected on the telephone
connected to modem or telephone extension"
The program hangs up with the message "Handset lift
detected on the telephone connected to modem or telephone
extension" either during answering machine operation
after the modem answers or shortly after dialing a number.
If the handset was not actually picked up, this suggests
modem misconnection. Make sure that the cable from the phone
jack is connected to the modem line (Telco) socket and not
to the phone socket. If the modem is properly connected,
but the problem persists, you probably have one of those
modems that incorrectly recognize local telephone handset
pick-up after switching to voice mode. You need to select
the with a delay or even the off option for
the Use modem recognition of local telephone handset
pick-up setting under the Voice - Signal Recognition
tab.
Unacceptable
quality of recording/playing sound via modem
If you are not satisfied with the sound quality of messages
recorded by the answering machine, or the quality of announcement
playback over the telephone, you might try selecting another
modem voice data format. This is set by the same name setting
under the Voice - General tab. The simplest way to
do this is to use the Recording and playing voice messages
window. First, record some announcements via the modem (not
the sound device) using different voice data formats. Now
select the format that provides the best sound quality.
Finally, select this format under the Voice - General
tab and click OK.
By default the program selects PCM/8bits voice data
format for Rockwell (V.253) voice command set modems
because it is supported by the majority of modems with this
command set. However, in some modems with the Rockwell
(V.253) voice command set, this data format is not well-supported.
If your modem supports such formats as A-Law and
uLaw (you can find out by trying them), you should
use these instead. It is quite possible that the sound quality
will improve greatly.
Emulated
tone fading
This is most likely happening because signals are formed
in voice mode (the Generate signals setting under
the Voice - Signal Generation tab) and one of the
ADPCM voice data formats is selected under the Voice
- General tab. Virtually all ADPCM algorithms fade tone
signals (for example, calling tone emulation). In this situation,
use a non-ADPCM format or simply select Generate signals
– by modem commands.
Connection
was terminated during answer on the first ring with completion
code Er 23
Modem returned Error for a command sent. Most likely, an
incorrect voice command set is selected in the Connection - Modem - Voice tab.
For some modems answering on the first ring is not recommended
because the modem may not respond to commands during the
process of phone number identification, which is transmitted
as Caller ID after the first ring. Thus, an Er 23 error
message is displayed. If it is absolutely necessary to force
the modem to answer on the first ring, make sure this works
with your modem, since the program cannot disable the Caller
ID feature when interacting with the modem via TAPI.
Answering
machine announcement is too quiet
If play volume adjustment under the Voice - General
tab does not help, you have probably recorded too quiet
a message. See the Voice message preparation section
of the Help File.
The
answering machine records only partial messages or does
not record messages at all
This problem shows up in message recordings that stop before
the established time, where the caller does not break the
connection (does not hang up), or the message is not recorded
at all. The session ends with one of the following completion
codes:
- Completion code 0 (normal completion) and only a part
of the message is recorded;
- Completion code 67 (Disconnected or too short a message
recorded) and the message file does not exist at all;
- Completion code 29 (No response from fax) - the message
file does not exist.
There can be two reasons for this:
1) The program detects silence on the telephone line. If
this happens, the following statement appears in the Comment
field of the corresponding record in the Log Book: "Recording
terminated due to detection of silence on the telephone
line". In this situation first try increasing the Recording
Volume under the Voice - General tab. If this
does not help, lower the Treat max. signal volume as
silence at, rel. units setting value under the Voice
- Signal Recognition tab. Both settings should be changed
incrementally, since overstatement of the recording level
or understatement of the silence threshold can result in
deterioration of the recording quality.
2) Because of an imperfect algorithm of a modem microprogram
(or a winmodem driver) the modem incorrectly recognizes
telephone line short tones in the caller's speech. In this
case the Log Book field contains no comment. Try disabling
the with modem setting under the Voice - Signal
Recognition - For incoming calls tab.
Caller
ID does not work
Possible reasons for this:
1. Your telephone company does not support this service
or you are not subscribed to it. Contact your telephone
company's operator for more information.
2. Your telephone network's Caller ID standard is different
from the one built-in in the modem. For mode information
contact your telephone company and/or the modem manufacturer's
customer support service. If the modem lets you change country
codes, this may solve the problem.
3. The modem does not support Caller ID. You can
verify this in the modem's documentation or through the
modem manufacturer's customer support service. If you have
a "hardmodem" and it supports firmware updates,
a firmware program might exist that supports Caller ID.
If you have a winmodem, modem operation depends on what
driver is installed. There might be drivers that support
Caller ID. If your winmodem supports plug-and-play, then
it is possible that the operating system selected a generic
driver at the moment of modem installation. Replacing this
driver with the modem manufacturer's driver may solve the
problem.
4. The modem supports Caller ID, but the modem description
in the Windows Registry lacks the Caller ID initiation commands.
This may happen if, at the moment of modem installation,
the operating system has used INF files that do not contain
such commands, for example, INF files for a standard modem.
It may also happen if the modem manufacturer neglected to
add these commands to the INF file supplied with the modem.
In the latter case, selection of the via port interaction
with the modem option instead of the via TAPI option
(under the Connection - General tab) may
help. However, interacting with a modem in this way possesses
certain drawbacks. We recommend using it for debugging purposes
only. It is better to locate INF files appropriate for your
particular modem and operating system which contain Caller
ID commands. If your search is unsuccessful, try enabling
distinctive ring services with software means (select the
Using program option under the Reception - Automatic
- Distinctive Ring Services tab) even if this service
is not supported by your telephone company or you normally
don't use it. The "side effect" of the distinctive
ring services will be the caller's phone number identification
overriding the TAPI.
5. Answer on the first ring is specified in the auto-answer
settings (under the Reception - Automatic tab).
Usually the Caller ID is transmitted between the first and
the second rings, thus the Answer on ... ring setting
value should not be less than 2. Also, certain modems behave
unpredictably when answering on the first ring. The connection
can be terminated and the session will end with one of the
error codes (Er 22, 23 or 26).
Connection
is terminated with message "Unforeseen error while
receiving data from modem"
This message suggests that the program was unable to determine
the cause of a particular error. Most likely the modem could
not execute a command sent by the program. Usually this
occurs due to incorrect voice command set selection under
the Connection - Modem - Voice tab.
This error could also occur due to incorrect device selection
under the Voice - Devices tab. For correct operation,
select the Telephone line device for the problem
mode.
| FAQ
| Features of certain
modems | Completion
codes | If
you have questions |
|