Datasheet

INSYS Modem 56k UL Configiration
Juni 05 19
The INSYS Modem switches to data mode if it receives the call signal for a data connec-
tion from a modem.
Acoustic Signals Description
short deep sound – short break – short high sound OK ready, command executed, PIN ok
long deep sound ERROR invalid command, wrong PIN
LOW alarm input active
long high sound HIGH alarm input not active
4.9.3 AT Commands for Voice and DTMF Mode
The AT command sets of INSYS Modem 144/336 and INSYS Modem 56k have a similar
content but partly different naming. The comprehensive description of AT commands for
voice functions are available as separate documents from INSYS MICROELECTRONICS.
Command Description
AT\D1 activate DTMF mode
AT\D0 deactivate DTMF mode
AT*C1 PIN for DTMF commands (factory setting „0000“)
4.10 Firmware Update
INSYS Modem contains a flash EPROM which allows a firmware update without hard-
ware manipulations. The latest firmware can be requested from your service partner. It
consists of the flash loader (file HS_LADER.s37) and the firmware code (file with exten-
sion .S37).
The update is executed by a terminal program, which can perform an ASCII upload (ASCII
text transmission protocol), running on a PC. Tested an recommended terminal pro-
grams are TeraTermPro, ProcommPlus and HyperTerminal (included in Windows). The
following settings in the terminal program are mandatory:
• hardware handshake
• no interpretation of characters like tab stop, line feed, carriage return, backspace
• baud rate between 9.600 baud and 57.600 baud
The upload procedure takes 2 to 3 minutes at 57.600 baud, , longer with lower baud
rates.