Contemporary Controls CTRLink EIAR-10T User Manual page 16

With this device, it is also possible to use an external modem
(analog, ISDN, GSM), alternatively to the internal modem
integrated into the router.
To do so, connect the modem to the RS232 interface of the router
NOTE labelled EXTERNAL using an RS232 connection cable.
For configuration, the router may also be connected to a computer via
the RS232 interface labelled "CONSOLE". This possibility, however, is
not recommended, since errors could easily result in the configuration
file when using this method. Therefore, you should use the console only
in an extreme emergency.
Now connect the 24 V power supply to the POWER connection on the
front side of the device.
Directly after connecting the power, the status display of the LEDs
may vary; only the "Power" LED must be lit in green. The LED will
only indicate the status correctly when starting the boot process,
see 3.7.
NOTE
The ON condition could look as follows:
ACTIVE MODEM:
ACTIVE ETHERNET:
ERROR:
POWER:
The "orange" display is no error condition!
After switching on
When connecting the Internet Access Router, observe the notes
provided in the Sections 1.6 Electrical connections1.6, 5.7 Connections
/ Interfaces and in Chapter 6 Technical Data.
1) The router does not have its own ON / OFF switch; connecting the operating
voltage is a function of the system/installation into which the remote diagnosis unit
will be integrated.
off
red
orange
green
1)
the power supply, the router will start booting.
Description of Functions
3-14