Siemens Insys 56k Operating Manual page 74

FAQ
Problem:
It is not possible to establish a
phone connection.
The modem can send data, but
can't receive data.
The modem does not cooperate
with a particular
communication program.
The modem cannot
communicate with another
modem, or only with errors.
68
Possible cause:
The modem dials with the pulse
dialing method instead of the
required tone dialing method, or
vice versa.
The data flow control settings
(RTS/CTS) are wrong.
The communication program
expects a certain data flow
control type. The modem has not
been set to the required type.
The other modem uses a
transmission protocol, which the
local modem cannot understand.
Pocket Modem 56k
Remedy
You can determine if your phone
system dials with pulses or tones:
If you hear a rattling on the line
during dialing, you are using pulse
dialing. The dialing types can be
switched with the commands
ATDP or ATDT.
See also Chapter 5 "AT Command
Set", commands ATDP, ATDT,
ATP, ATT.
See Chapter 5.2.4 to 5.2.6 "Data
Flow Control".
Setting the modem to the
required data flow control type
will solve the problem. Most of
the time, the used communication
program allows the creation of an
initialization string, in which the
necessary settings can be entered.
This string is transmitted to the
modem during the program start.
See also the handbook of the used
software and the paragraphs
regarding "Data Flow Control" in
Chapter 5.
Using the data compression type
and error protocol required by the
other modem will solve the
problem.
See also Chapter 5.3 and 5.4 "Error
Correction and Data
Compression"
Dezember 05