Tait TB9100, Installation And Operation Manual

Page: 21 / 144

TB9100 Installation and Operation Manual Description 21
© Tait Electronics Limited May 2006
Dual mode is configured or selected at the different inputs in the following
way:
Input interface Description
RF The RF interface can be configured in channel profiles to receive analog speech,
digital speech or both (dual mode). In dual mode, the receiver listens for digital
P25 signals. If they are detected, the base station operates in digital P25 mode,
otherwise in analog FM mode.
Analog Line The analog line receives analog speech signals from the dispatch console. The
current calling profile defines whether the signal is to be handled as digital P25
or analog FM. Different calling profiles can select different modes.
Digital Line The digital line receives speech signals whose mode has already been defined
by another base station in the network. They are in the format of IMBE speech
packets (digital P25 calls) or G.711 speech packets (analog FM calls). The digital
line is always capable of receiving calls in either mode.
Control Panel The control panel receives speech from the connected microphone. The user
selects digital P25 or analog FM mode using the microphone channel button.
Refer to
“Microphone Operation” on page 68 for further details. The
destination of the signal is configured by the CSS.