User's Manual

DMR_Manager Operating Manual 2011/07/04 Version 1v2
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You must check Line user if there is a user side telephone interface, or Line PSTN if there is a
subscriber side telephone interface (BCA-C).
The Busy Tone Decoder function activates the engaged line recognition algorithm (used in the automatic
radio-telephone interface).
The Freq Ring Gen box allows to set the frequency of the telephone call signal (usually 25Hz), which is
active only in user side interfaces (bca-u).
The box Num Ring C.ta allows to set the number of rings after that the telephone interface automatically
engages the line. It is active only for subscriber side telephone interfaces (bca-c).
6.2.2.7 MULTICHANNEL
All DSP modules have a connection bus “MTCH” that allows different radio systems to synchronously exchange
data in particular network configuration. This feature allows to realize many different solutions.
The MTCH bus can hold both anlog audio signals in 16 bit digital format and synchronism/signalling/control
parameters.
It is possible to connect up to 12 transceivers directly ,to perform a digital audio matrix in case of complex
base station solutions.