User`s manual

77
CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION
3
3.2 System Configuration
(3) Connection example with a Q series C24 via cellular phone
*1
*1 The public line is compatible with the office telephone system as well.
*2 The digital line (ISDN) can replace the public line.
When connecting via a digital line, a TA (terminal adapter) and a DSU (digital service module) are used instead of a
modem.
QJ71C24-R2
CH1.
CH2.
CH1.
CH2.
Q25HCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
RS-232
USB
QJ71C24-R2
CH1.
CH2.
CH1.
CH2.
Q25HCPU
MODE
RUN
ERR.
USER
BAT.
BOOT
RS-232
USB
Modem
RS-232
cable
Public line
Cellular
Phone
Cellular phone
connection adapter