Hardware manual

Issue 8 Electra Elite
5 - 20 Installing Electronic Telephone Units
3.7.5 Connectors
The MIFM-U( ) ETU has six connectors:
CN1 Connects to the Backboard
CN2 Connects to the Backboard
CN3 Used to connect the ETU backup battery
during installation
Always disconnect the battery when
storing the ETU.
CN4,5 Connectors for the optional Modem Kit Unit
IC6 Socket for the optional KMM(1.0)U
SMDR and PC Programming connections are made (via
COM ports) on the side of the KSU that contains the
MIFM-U( ) ETU.
COM1 PC/LCR/Wireless Programming
COM2 SMDR
Both COM ports are standard female RS-232C DCE
ports. A straight cable is required.
When an external modem is used, connect the modem to
COM1 port via the modem cable adapter. A straight
RS-232C cable is required.
3.8 Modem Kit Unit
3.8.1 Description
This optional modem mounts on the MIFM-U( ) ETU or
PCT(S)-U
( ) Unit and does not require analog port
connection. The MIFM-U( ) must be installed in IF slot S1
or S2 of the Basic KSU for this on-board modem to work.
3.8.2 Installation
The Modem Kit Unit pins and the pins of the CN4 and
CN5 socket are labeled. Align the Modem Kit Unit pins
before installing the unit. Installing it backward could
damage the Modem Kit Unit.