User guide

Chapter 7: Connecting to the Control Panel
DE5450S Remote Programmer Guide Rev. 9 53
i) The user needs to obtain a digital number for the GSM unit. The
Remote Programmer is then able to connect to the GSM unit via
digital communication (at a baud rate speed of 9600).
ii) DTMF callback connection uses a special GSM modem (Sony
Ericsson Modem GM29) which uses a digital number.
The Remote Programmer dials the GSM unit via analog
communication, but, instead of sending data it uses DTMF tones. The
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.