Hardware manual

Issue 8 Electra Elite
5 - 96 Installing Electronic Telephone Units
6.1.5 CMS(2)/(4)-U( ) ETU Connectors
J2 and J3
Used to install the MDM-F-20 Unit
J9
Connects to the backboard
9-pin RS-232 (COM2)
Not used (MDM-F-20 Unit)
RJ-11 modem port (COM2)
Remote connector on serial interface (MDM-F-20
Unit)
9-pin RS-232 (COM1)
Local serial connector on main ETU for direct
connection
6.1.6 CMS-U30 ETU Jumper Settings
6.1.7 CMS-U30 ETU Connectors
J2
Connects to the backplane
J6
Used for Compact flash drive on FMS
J10
Not used.
J11)
COM port for console programming connection
J12
Port expansion connector for DSP-U30
J1 Used only on FMS/CMS
1 - 2 No external modem connected (default)
2 - 3 External modem connected