Remote Gr64 Setup; Security Aspects; Sms Method - Wavecom GR64 Application Note

4. Select script file to download.
5. Initiate download.
6. Set new script to be active.
7. Set script to run from start. Normally this setting will already be in force in
which case this step can be omitted.
8. Reset remote module so that new script will be run.
2.3

Remote GR64 Setup

The GR64 that is to have its script updated by using the RC/IPRC function must have
a script with the RC/IPRC functionality active as part of the main loop within the
script structure (example Section 3.1.1/3.1.2). The remote GR64 must also have a
SIM card with a data number to allow the setup of a CSD call when using RC, or a
SIM card which allows for GPRS connections to be made when using IPRC.
The RC embedded application in section 3.1.1 relies upon a data call being received
before switching the RC function on.
embedded application can be made to dial a target server and then switch on the RC
function. Likewise, the IPRC embedded application in section 3.1.2 waits for an IP
connection to be made, however, the IP connection could also have been initiated
from the IPRC script.
2.4

Security aspects

When implementing the code, some thought should be given to ensuring that no
unauthorized entity can dial into the module and perform an unauthorized
download.
Some methods are described below which are easy to implement and secure in their
operation.
2.4.1

SMS Method

The download operation could be triggered by an incoming SMS, the format of
which is recognised by the script i.e. the text of the SMS could be
'Update required: code 1234 call service centre'.
This should be sent from a known number, and could also include a number to dial
for RC, or an IP address to connect to for IPRC.
Gx64 APPLICATION NOTE
EA Remote Download
Page: 7/22
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
This can also be done in reverse i.e. the