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ESIM384 Installation and Configuration Manual v1.1
31. DUal SIM ManaGEMEnt
the Dual-SIM feature allows the system to operate with one of the two inserted SIM cards identified as Primary SIM and Secondary SIM
respectively. the Primary SIM card works as the main default card, while the Secondary SIM card is intended for backup purposes or addition
to the Primary SIM card - SMS text message sending/calling to the listed user phone number and/or communication with the monitoring
station.
the Dual-SIM feature can operate in one of the following modes:
•
Disabled
– the Secondary SIM card will not be functional and the system operates with Primary SIM card only (by default – enabled).
•
automatic
– the system switches between the SIM cards in case of a GSM connection or one of the SIM cards failure.
Manage Dual -SIM
feature
ElDES
Config-
uration
software
this operation may be carried out from the PC using the
ELDES Configuration
software.
notE:
Regardless of the selected mode, only one of the two SIM cards can operate at the same time.
31.1. Disabled Mode
Disabled mode is the default system mode that does not involve the Secondary SIM in the communication process. When this mode is in
use, the system will ignore the Secondary SIM card even if inserted in the SIM card slot.
For more details on how the system communicates with the user and the monitoring station in Disabled mode, please refer to
17. alarM
InDICatIonS anD notIfICatIonS for USEr
and
30.2. Communication
respectively.
31.2. automatic Mode
Automatic mode involves both SIM cards in the communication process. In this mode there is no Primary or Secondary SIM card hierarchy,
since both cards are equal and the SIM card that is currently in use maintains the GSM connection at all time, unless a failure occurs and the
other card would replace the previous one.
When one of the SIM card fails, the system attempts to re-establish a connection with it by starting an initial reconnection for a set number
of attempts (by default - 3 attempts). If all attempts fail, the system will switch to the other SIM card. If the other SIM card is responsive and
a GSM connection is successfully established, the system will remain operating with that SIM card until it fails. However, if the other SIM
card is unresponsive or it is not present in the SIM card slot, the system will return to the previous SIM card and attempt to establish a GSM
connection with it. If the system fails to carry out this action, after a single attempt it will switch to the other SIM card. this cycle continues
until one of the SIM cards responds and a GSM connection is successfully established. When the SIM card fails, the system will once again
attempt to restore the GSM connection for a set number of attempts (by default – 3 attempts). If all attempts fail, the cycle will continue as
described previously.
In Automatic mode the priority is to transmit data to the monitoring station, but if an event, which requires the system to send an SMS text
message occurs , the system will send the SMS text message via the SIM card that is currently in use. this can only be carried out under
the following conditions:
•
among the attempts to transmit data to the monitoring station (depending on communication method).
•
while switching the monitoring station connections.
•
while switching between the SIM cards.
notE:
eLDeS Cloud Services will remain operational in Automatic mode, when used.
