Connecting to the PowerMax Control Panel________________________________________ 7-3
7.1.2 Remote Connection (Telephone Modem)
This is applicable when the PowerMax Remote Programmer is off-site and the PowerMax
control panel on-site is connected to PowerMax Remote Programmer by a telephone modem.
1. From the Communications mode drop-down list, select one of the following
communication options:
Modem Type Description
PSTN direct
Dials to the control panel by the PSTN line at a baud rate of 300.
PSTN callback
Dials to the control panel by the PSTN line at a baud rate of 300. The
control panel calls back.
GSM analog
direct
Dials the GSM unit of the control panel by analog communication at a
baud rate of 300.
GSM digital direct
Dials the GSM unit of the control panel by digital communication at a
baud rate of 9600.
GSM analog callback
Dials the GSM unit of the control panel by analog communication at a
baud rate of 300. The control panel calls back at a baud rate of 9600.
GSM DTMF callback
This form of communication is used when transmission quality is poor.
DTMF signals instruct the panel to call back by digital communication
at a baud rate of 9600, using a Sony Ericsson Modem GM29
(mandatory).
GSM digital callback
Dials the GSM unit of the control panel at a baud rate of 9600. The
control panel calls back at a baud rate of 9600.
GSM communication enables the user to initiate both analog and digital
communication, as follows:
• Analog: Establishes connection to the PowerMax control panel as in PSTN
communication. It provides a baud rate speed of 300 and performs full
download/upload in ten minutes.
• Digital: Provides higher quality and speedier connection to the PowerMax control
panel at a baud rate speed of 9600. It performs full download/upload in one minute.
This type of connection is more reliable since it performs a checksum (an error-
detection scheme) on transmitted messages.
Although some networks use analog communication with satisfaction, in other
networks the quality of this type of communication may be poor, which means that,
in this case, performing uploading is almost impossible via analog communication.
This problem can be overcome by using one of the two following methods of using
digital communication:
i) The user needs to obtain a digital number for the GSM unit. The PowerMax
Remote Programmer is then able to connect to the GSM unit via digital
communication (at a baud rate speed of 9600).
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