Lencore Spectra i.Net: Installation and Operations Manual - Manual (Page 48)

section 6
6.6 | installing the MPI (optional)
The Music and Paging Interface (MPI)
The MPI is an optional system component. It sequences the OPs and has inputs for:
The i.Lon® network hub
Music
Paging
FOLLOW THESE STEPS TO INSTALL THE MPI:
Mount the MPI to the wall
Connect the MPI to the i.Lon® using two conductor/one pair wire (16 gauge).
Connect each wire to the screw terminal on bottom of MPI to the i.Lon®.
I.LON CONNECTIONS
One wire to #17 (LON® B/PLT-)
One wire to #18 (LON® A/PLT+)
When installing the i.Lon®’s data connection to the MPI, polarity is unimportant, however,
make sure the two wires at the screw terminals are clean and not touching or crossed.
Coming out from the MPI, use a data cable, 4-pair CAT 5E with an RJ45 connector.
Plug into the 10/100 Ethernet base connection from the MPI to the data IN port of
the first OP.
You must also connect a ground wire from the MPI to the OP that Connects the MPI
ground to the OP ground.
See the MPI label to verify which audio or paging input you may need and to connect
appropriate music source or phone page into the MPI.
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