Phone numbers with 7 digits will get the wrong reply when sending SMS to the UCM/GSM4. The UCM/GSM4 will always send the Help Text (1) and (4). This occurs if 7 digits appear in caller ID. Note that this may or may not include the country code, depending on the carrier. This problem has been reported in South Africa and Cyprus. Please upgrade to GSM 7.048
This new firmware 7.035 fixes a problem that affects some gsm modules (rarely)
Only a few users have reported this issue.
The module is unable to reply to SMS messages from a programmed phone. However it is able to send SMS to the programmed phones in the event of alarms
Last edited on Saturday May 10th, 2014 09:31 am by ident
Can you clarify "some gsm modules" point; do you mean modules of the different chipset types that have been Introduced over the last few years or within certain modules of the same chipset type.
My question is because this is posted at a gsm4 firmware but surely this is SIM900 chipset only? Are you saying there are different batches of these?
I have the following issue with UCM/GSM4 (7.035)
Whenever I send an SMS command to comfort the reply is the help menu main screen i.e.
(1) - Help for arm security
(2) - Help for control
It does not accept my command for arming (11) disarming (10) or (1) (4). It always replies as above. My number is authorised for SMS arming, disarming and control.