Toa IC-100 Programmer's Manual page 4

Connecting to the IC-100
The MU-110 CPU card includes a DB25 connector for serial communications. Its wiring follows
the RS-232 standard for Data Terminal Equipment (DTE). If the serial port on your equipment is
also wired as DTE (typical for a terminal or PC), connect to the MU-110 using a straight-through
serial cable plus a null-modem adapter. If the serial port on your equipment follows the RS-232
standard for Data Communicating Equipment (DCE, typical for modems), you will not need the
null-modem adapter.
Jumper J1 on the MU-110 CPU Card sets the IC-100 serial communication baud rate. TOA ships
the MU-110 with jumper J1 in position 4, yielding 1200 bps. You may increase the baud rate to
2400 bps by moving jumper J1 to position 3.
Each data byte communicated through the MU-110 serial port contains 8 data bits, no parity and 1
stop bit. The MU-110 does not support flow control.
IC-100 remote control and monitoring features are only available after you purchase and
install optional MU-110 firmware. Any TOA Electronics, Inc. authorized IC-100 dealer may
purchase the optional firmware as model IC-EPROM v2.xR. Installing IC-EPROM v2.xR firmware
disables the "Speech Path Control" IC-SOFT maintenance screen.
IC-100 Programmer's Guide — Page 2
revised September 1999