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6620-3201
Backup IP address:
This parameter may be used to specify an IP address associated with the Backup APN for use when
the unit cannot connect using the primary
Static IP address
.
Retry APN time (mins):
If the
Use backup APN
parameter is enabled, this parameter is used to
de
fi
ne how long the unit will use the backup APN before attempting to revert to the primary APN.
PIN:
Some SIM cards are locked with a Personal Identi
fi
cation Number (PIN) code to prevent misuse if
they are lost or stolen. Your GSM operator should be able to tell you if your SIM has a PIN code as
supplied.
If you enter a PIN code in this
fi
eld, the unit will try to unlock the SIM before attempting to connect to
the network.
Note:
The PIN code is not shown for security reasons and it is essential that you enter this correctly as three
incorrect attempts will usually block the SIM card from use. In this event, you will need to remove
the SIM card from the unit and insert it into a mobile phone then enter the Personal Unblocking Key
(PUK), which can be obtained from the network operator.
Confi rm PIN:
Enter the PIN again in this
fi
eld to con
fi
rm it.
Initialisation string <n>:
These parameters (
Initialisation string 1
,
Initialisation string 2
, etc.)
allow you to specify a
number of command strings that are sent to the GPRS module each time a GPRS connection is
attempted. These can be used to set non-standard GPRS operating modes. Each string is pre
fi
xed
with the characters “AT” before being sent to the GPRS module and they
are sent to the GPRS module in the order speci
fi
ed until an empty string is encountered. For example,
Initialisation string 3
will not be sent unless
Initialisation string 1
and
Initialisation string 2
are
both speci
fi
ed. Initialisation strings are not normally required for most applications as the unit will
normally be pre-con
fi
gured for correct operation with most networks.
Hang-up string:
In a typical GPRS application the connection to the network is “always on” and under normal
circumstances it is not necessary to hang-up the GPRS module. Under certain circumstances
however, the router may use the “ATH” command to try and disconnect the GPRS module from the
network, e.g. if an incorrect APN has been speci
fi
ed and the module is unable to attach to the network
correctly.
This parameter allows you to specify an alternative hang-up string that is sent to the GPRS module
when disconnecting a call. As with the Initialisation strings, it is not necessary to include the “AT” as
this is inserted automatically by the router.
Post Hang-up string:
This parameter allows you to specify additional “AT” commands that is sent to the GPRS module after
it has been disconnected. As with the Initialisation strings, it is not necessary to include the “AT” as
this is inserted automatically by the router.
Intercall idle time (s):
This parameter allows is used to specify the length of time (in seconds) that the router will wait after
hanging-up the GPRS module before initiating another call attempt.
