Service Manual

GSM-205-323

MCUF

31st Oct 01

Technical Description: Horizon

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indoor

68P02902W07-B

CONTROLLED INTRODUCTION

Tech. 6–13

Integral MCUF

FMUX

functionality

The equivalent function of two FMUX modules exists integral to the MCUF,

enabling two extension cabinets to be connected. To enable total of four

cabinets to be joined together as one BTS site, an FMUX module is also

required in the master cabinet to connect the third extension cabinet. A single

cabinet site has no need for the FMUX functionality, because the MCUF

connects with the cabinet CTUs through the backplane.

Each fibre optic multiplexer (FMUX) function multiplexes and demultiplexes six,

full duplex, transceiver links to one (TX/Rx) pair of fibre optic cables. This

enables up to six transceivers in a single extension cabinet (either

Horizon

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or M-Cell

) to be linked to the master cabinet.

Each FMUX fibre optic link is full duplex 16.384 Mbit/s. The FMUX optical link is

capable of driving up to 1 km.

For functional description of FMUX see FMUX module and FMUX function in

this chapter.