FT638 – Digital Radio Box
7.PEI multplexer
7. PEI multiplexer
7.1.
General remarks
The PEI multplexer enab les multple devices to connect to the same TETRA MRT. As answers are
distrib uted to all connected devices, it is possib le to receive telegrams that were initated b y other
partcipants. Hence, it is important – as is specified for the PEI AT interface - to neglect unknown
and/or unwanted telegrams. However, we cannot guarantee that every comb inaton of devices
and/or sofware is feasib le. An equivalent functonality for DMR radios is not supported.
7.2.
Standard version
Besides the connected VoIP control panels (e.g. Major BOS 4VD/8VD) one more PEI AT partcipant
can b e connected to the FT638 (see as well
). Opton ACCESS or
higher is needed, if using the PEI AT interfaces of b oth MRTs via ethernet shall b e possib le. The PEI
AT connecton can b e assigned to any of the VoIP connectons.
7.3.
IN/OUT version
Besides the connected VoIP control panels (e.g. Major BOS 4VD/8VD) three more PEI AT
partcipants can b e connected to the FT638. Connector
MRT2
is for use as a complete PEI (AT data
and audio in/out, connector style as for Sepura SRG3900 / see as well
). Opton ACCESS or higher is needed, if using one or two PEI AT interfaces via ethernet shall
b e possib le. Both PEI AT connectons can b e assigned to any of the VoIP connectons.
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FT638_eng (29.04.22)
