Quantum and Evolution Series Installation and Operating Handbook
7-19
7.3.3.1.2 Edit-Tx-Baseband Menu
This menu contains the following options:
•
Mode
. This controls the transmit baseband mode.
•
Data rate
. This sets the terrestrial transmit data rate.
•
Audio mode.
This controls the audio/data baseband mode format in IBS/SMS
emulation mode. It is possible to generate a 64kbps data stream from the two 32kbps
ADPCM audio ports on the IDR card or a composite128kbps data stream can be
generated from the two 32kbps ADPCM audio ports plus 64kbps from the main data
port.
•
Advanced.
When the user level is set to
Advanced
, this allows configuration of framing,
timeslots and overhead.
Edit-Tx-Baseband Mode Screen
Options:
Continuous
This selects normal continuous data interface operation.
Drop MUX
This requires the Drop and Insert SAF features to be enabled. It processes
a T1 or E1 PCM bearer, with Tx data being dropped from specific timeslots
of the bearer (on the Rx side, data can be inserted back into the same
timeslots or into different timeslots).
Audio/data
This requires an IDR card to be fitted, plus IBS/SMS satellite framing,
which provides a P1348 emulation mode. It uses the audio ports normally
used for the IDR audio ESC circuit, as the main traffic data. A 64kbps
Baseband: 1:Mode 2:Data rate
3:Audio mode 4:Advanced
Baseband mode: [Continuous]
1:Continuous 2:Drop MUX
3:Audio/data
