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UCM/GSM4 not connecting

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Posted: Monday Dec 9th, 2024 02:50 pm

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strickers
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Joined:	Sunday Jul 24th, 2011
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Hello
I recently upgraded all my comfort firmware so it would be ready for the recent instructionson connection to home assist.I used the 'check for firmware updates' options and all worked successfully but now my GSM4 module will not send messages. It either sits at 'connecting to GSM network' or 'Signal strength 0'. Before the upgrade it sat around 2 or 3.
The GSM module type is '900-2G'. Its currently got firmware version 7.240.
Any ideas?
Thank you

Posted: Tuesday Dec 10th, 2024 01:08 am

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slychiu
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Joined:	Saturday Apr 29th, 2006
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If you are in the UK, 2G and 3G are being switched off gradually around the country. Your GSM Module seems t be 2G or 3G so you need to buy a new UCM/4G-7608 module which works on 4G. I beleive it may be a coincidemce that you noticed the lack of conection when you upgraded the firmware. check the name of the module on the GSM eg SIM5320

Posted: Sunday Dec 15th, 2024 11:59 am

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strickers
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Hi Slyhiu,

The module is a SIM900.

I received a test from comfort about 30 mins before I upgraded but had zero since. It does connect to something but only at signal 0.

I am happy to purchase a new module as think 4G will be better. Do I just need the module that sits on top of the UCM?

Thanks

Last edited on Sunday Dec 15th, 2024 12:00 pm by strickers

Posted: Monday Dec 16th, 2024 12:43 am

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slychiu
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SIM900 is 2G, so it seems like this is no longer available where you are. You should upgrade to the 4G module CM/GSM4G-7608

Posted: Monday Dec 23rd, 2024 03:54 pm

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strickers
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Thanks Slychiu, Using a new module fixed the issue,

Posted: Tuesday Dec 24th, 2024 01:22 am

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slychiu
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Thats good. 4G should last a few years at least

Current time is 02:58 pm

Comfort Automation/ Security System Forums > Products > GSM Module > UCM/GSM4 not connecting

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