7-4________________________________________ Connecting to the PowerMax Control Panel
ii)
DTMF callback connection uses a special GSM modem (Sony Ericsson Modem
GM29) which uses a digital number.
The PowerMax Remote Programmer dials the GSM unit via analog communication,
but, instead of sending data it uses DTMF tones. The PowerMax Remote
Programmer sends the download code (numeric, 0-9) and the phone number
(consisting of the Sony Ericsson Modem digital number). After disconnection, the
GSM unit calls back the Sony Ericsson Modem (via digital communication at 9600
baud rate).
•
The
Comm port
field becomes disabled and the field value is the
communications port where the modem is connected.
•
The
Baud rate
field displays 300 (analog communication) or 9600 (digital
communication), the baud rate used for telephone modem connection.
•
The
Parity
and the
Stop bits
fields do not change.
Figure 7-4: Options - Telephone Modem Communications Mode
2. In
the
Telephone Modem
section of the dialog box, select from the
Modem
drop-down list, the modem to use for connecting to the control panel.
3. Click
Settings
to display the Modem Settings dialog box, and define the dialing
and modem parameters.