Clear-Com RCS-2700 - Manual (Page 20)

R C S - 2 7 0 0 S O U R C E A S S I G N M E N T P A N E L 1 - 1 2
you connect a rear-panel RCU-67, you will have connected multiple serial ports
on the rear panel and either one or both of the ports will not work.
Refer to the Installation Chapter of this manual for further information
regarding the PC serial port.
PRESET-SELECT CONTACT CLOSURE (5)
You can wire the contact closure on the rear panel of the RCS-2700 so that you
can select presets by pressing external buttons or other devices.
Refer to the Installation Chapter for more detailed information on the wiring
and operation of this feature.
TERMINATION SWITCHES (6)
The termination switches are set by a technician when the RCS-2700 is installed
and should not be changed unless a specific need arises. If these switches are not
set correctly, very poor intercom operation can result. Refer to the section
entitled “Setting Termination Switches” in the Installation Chapter for guidelines
on setting these switches.