1-2 EF-701M INTERFACE
The EF-701M 4-Wire and Matrix Direct Interface is a flexible and powerful tool for
connecting 2-wire intercom systems or stations together over various 4-wire transmission
media. The EF-701M Interface can also connect a 2-wire intercom system directly to a
Clear-Com Matrix frame port.
DESCRIPTION
CONNECTING A PARTY-LINE CHANNEL TO A MATRIX FRAME PORT
An EF-701M Interface can connect a channel of standard or TW party line directly to a
Clear-Com Eclipse Matrix frame port, allowing the party-line intercom to be located
quite a long distance from the Matrix frame. At the same time, the EF-701M interfaces a
DC-voltage call signal or 20-kHz call signal to the Matrix.
The EF-701M is recognized by the Matrix as a Clear-Com CCI-22 Interface. It provides
the same function as the CCI-22 Interface with the following exceptions:
• the EF-701M supports only one channel.
• the EF-701M also supports the 20-kHz call signal protocol.
• the EF-701M is a stand-alone unit and does not require an interface frame.
Note: The EF-701M must be powered from the party-line connection.
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