Instruction manual

ACU-1000 Operations Manual
3-12 Interoperability Now
3.6.1.1 Remote DTMF – Make a Connection
When the command * n n is detected in the audio input of any interface module, a connection
is made between that module and the communications medium at extension n n. For example,
if a VHF radio is wired to a DSP-2 module installed at extension #5, the command * 0 5,
entered into the keypad of a telephone set associated with an LP-2 module at extension #11,
will cross-connect the local phone set to the VHF radio system. If a PSTN module is installed
at extension #8, the command * 0 8 will cross-connect the LP-2 user to the telephone line wired
to that PSTN module. Voice prompts guide the LP-2 operator to enter the telephone number
that will be called, and provide other useful information, such as informing the user if the line
is busy. To make a conference call among several modules, add a second connection after the
first is made. For example, make a conference call between the LP-2 user at extension 11, the
VHF radio at extension 05, and to a PSTN subscriber via the PSTN module at extension 08.
First make a connection between the LP-2 and the VHF radio as described above, then add the
PSTN subscriber by entering * 0 8 and following the voice prompt instructions provided.
3.6.1.2 Remote DTMF – Break a Connection
To disconnect an interface module from any connection, enter the DTMF disconnect command
* # (star - pound). If the interface module is currently engaged in a conference call between
several different modules, the * # sequence entered at the keypad of a radio associated with
extension #8 will remove extension #8 from the call, but leave the remaining connections
intact. Because of the way a telephone set is directly wired to the ACU-1000 chassis, it’s
possible to terminate an LP-2 connection by hanging up the LP-2 telephone handset. The only
local means for any other modules to terminate their connection is the * # entry.
3.6.1.3 Remote DTMF – Attention Command
When the DTMF Attention Command * * * is sent to any module, a voice prompt will be
returned identifying the extension number of the module receiving the Attention Command.
This can be done whether or not the module being queried is currently connected, so it can be
used to check if the system is operational without having to make a connection.
3.6.1.4 Remote DTMF – Monitor Function
This command enables any module to monitor all audio from any other module. Enter * 3 4 n,
where n is the extension to be monitored. To discontinue monitoring, re-enter * 3 4 n, where
again n is the extension that is currently being monitored. This command toggles the selected
module, turning the monitor function on, and then cutting it off. When the monitor function is
enabled, the monitoring module will hear only the receive audio of the module being
monitored. The Monitor Function does not allow the monitoring module to assert any control
over the monitored module, nor can it send TX audio to the monitored module. Both the
monitoring and the monitored module will still be capable of making connections and perform
other functions if desired.