ACU-5000 Operations Manual
Interoperability Now
9-17
9.3
Operation Via Remote DTMF
An ACU-5000 may be controlled via DTMF from the field. This may be from the DTMF
keypads of radios or other 4-wire devices, remote telephones connected via PSTN, or VoIP
phones or softphones.
Operation via DTMF may take place in conjunction with operation via the web-based GUI.
When connections are made or broken by DTMF, the changes show up immediately on the GUI
(no user-initiated page refresh is required).
Note that a channel must have DTMF enabled or it will ignore DTMF input. DTMF Enable is
done within the channel configuration process as described in Section 5.
Table 9-1
Operational Commands Via Remote DTMF
Command Item
Command
Description
Factory Default
Make A Connection
* n n
Connect the channel to extension n n
No Connections
Break the Current
Connections
* #
Terminate all connections the channel is currently
participating in.
N/A
Attention Command
* * *
ACU responds with the extension number of the
channel being queried.
N/A
Monitor Function
* 3 4 n n
n n = Extension to be monitored. * 3 4 n n toggles
between Monitor Mode and Normal (non-
monitoring) Mode.
Disabled
(Normal Mode)
The subsections below assume a simple ACU-5000 interoperability system with channels
configured as follows:
CH1: Radio channel interfaced to a VHF radio (user in field has radio with DTMF keypad)
CH2: PSTN channel interfaced to POTS line at phone # (919) 555-1234
CH3: SIP channel
CH4: Radio channel interfaced to a UHF radio
9.3.1
Remote DTMF – Make a Connection
When the command
* n n
is detected in the audio input of any interface channel, a connection is
made between that channel and the communications medium at extension
n n
. For example,
assume the simple ACU-5000 interoperability system described above (with all channels initially
disconnected):
If a VHF radio user in the field enters
* 0 4
on the radio keypad, the VHF radio and the UHF
radio of the ACU-5000 system will be placed into a net and two-way communications can begin
immediately.
If that radio user instead enters
* 0 2
(requesting a PSTN connection), the system will prompt the
user to enter the phone number that the user wants to connect to and will provide additional voice
prompts guide the user to completing the connection.
Summary of Contents for ACU-5000
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