SMS Trouble after power failure

[slychiu]

SMS Dial Failure indicates that the SMS was not accepted by the SMS provider. The reasons are not clear


Are the dialout to Voice phone at #3 also my GSM or is it by phone line?

[caravanboy]

Hi, dial out 3 was by phone line.

As I\'ve mentioned before in this thread, during power outages the GSM module has a good signal and my SMS messages are sent many times per day (when a gate opens) and they never fail.

I cannot understand why the SMS messages fail to send from Comfort only when there\'s a power failure even if the signal strength is good. This does point to it being a quirky bug with Comfort.

Any suggestions on how I can help investigate further?

[caravanboy]

I\'m still having issues with SMS messages after power failure. This time I have more evidence that the issue seems to lie with Comfort...

Power failure was at 00:09 - you can see in the event log that it went on and off a few times over several seconds before then staying off for almost 3 hours.
After the first AC failure Comfort then logged \"SMS Trouble\" that we\'ve seen before in previous postings in this thread. HOWEVER, it also logs an \"SMS Restore\" very shortly afterwards at 00:10.

At 01:05 I dialled-in to Comfort on the GSM number (instead of landline) and got silence (a separate issue that was only resolved a few days later after a reset) and did not realise it had answered and was actually recording a voicemail. But this DID prove that the GSM module was alive and well and able to send texts as I did then receive a \"New voicemail\" text immediately (the custom message #4).

At 03:00am when the power finally came back on we started to receive the Power Fail/Restore texts that should have been sent at 00:09.  The bodies of the text messages had Comfort times embedded in them ranging from 03:00:56 to 03:02:36. This presumably indicates that Comfort only decided to create and send them at that point (i.e. they had definitely NOT been stuck in the GSM network).

Any thoughts on how to investigate this further, slychiu?

Event log...

06-Aug  00:09     AC Fail 1
06-Aug  00:09     AC Restore 1
06-Aug  00:09     SMS Trouble ID # UCM 2
06-Aug  00:09     AC Fail 1
06-Aug  00:09     Alarm Type # PowerFail (8)
06-Aug  00:09     AC Restore 1
06-Aug  00:09     AC Fail 1
06-Aug  00:09     Alarm Type # PowerFail (8)
06-Aug  00:09     AC Restore 1
06-Aug  00:09     AC Fail 1
06-Aug  00:09     Alarm Type # PowerFail (8)
06-Aug  00:09     Sign in - User # 2
06-Aug  00:09     Sign in - User # 2
06-Aug  00:09     Mode Change # Security Off
06-Aug  00:09     Sign in - User # 2
06-Aug  00:10     SMS Restore ID # UCM 2
06-Aug  01:05     Alarm Type # NewMessage (29)
06-Aug  01:05     Send SMS Custom Message # 4
06-Aug  01:05     Dial Number # 2
06-Aug  03:00     AC Restore 1
06-Aug  03:00     Dial Number # 1
06-Aug  03:00     Remote Signin - User # SMS Acknowledge
06-Aug  03:00     Dial Number # 2
06-Aug  03:01     Remote Signin - User # SMS Acknowledge
06-Aug  03:01     Dial Number # 3
06-Aug  03:01     Remote Signin - User # Acknowledge
06-Aug  03:01     Dial Number # 1
06-Aug  03:01     Remote Signin - User # SMS Acknowledge
06-Aug  03:01     Dial Number # 2
06-Aug  03:01     Remote Signin - User # SMS Acknowledge
06-Aug  03:01     Dial Number # 1
06-Aug  03:01     Remote Signin - User # SMS Acknowledge
06-Aug  03:01     Dial Number # 2
06-Aug  03:01     Remote Signin - User # SMS Acknowledge
06-Aug  03:01     Dial Number # 1
06-Aug  03:01     Remote Signin - User # SMS Acknowledge
06-Aug  03:01     Dial Number # 2
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 1
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 2
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 1
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 2
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 1
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 2
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 1
06-Aug  03:02     Remote Signin - User # SMS Acknowledge
06-Aug  03:02     Dial Number # 2
06-Aug  03:02     Remote Signin - User # SMS Acknowledge

[slychiu]

THanks for the log. We will invetigate

[caravanboy]

Hi, any clues yet from your investigation, slychiu?

[slychiu]

We have not been able to duplicate the problem unfortunately

[slychiu]

We may have found the cause of this problem and a workaround.
Please see http://www.comfortforums.com/forum48/5407.html

[caravanboy]

Ahh, this is great. Makes me feel a little better - I did just assume there must be some unknown setup/config issue with my system   I\'ll look into the linked information.

However, I changed my SIM and GSM network provider a few months ago and since then I\'ve had a couple of power outages and the SMS messages re. power failures have worked perfectly.

I guessed that perhaps my old provider had a borderline signal (despite it showing \"Good\" when on AC) and wondered if perhaps when on battery Comfort wasn\'t providing enough power for the SIM to make reliable contact with the cell tower? 

Anyway, assuming my theory was rubbish, could this problem that you\'ve identified only happen with some providers/SIMs, and might explain why my new SIM works okay?

[slychiu]

We have been using various gsm modules in the office and have never had the problem even after AC Off. This particular customer informed us of the problem and allowed us to access the system remotely and check signal level and event log. Thus we noted that after power failure the sms failed to send. This was fixed by a reset of the module. It also happened after power restore. I agree that it could be due to a network providers signal. 
I dont believe it is due to battery not being able to supply the GSM becayuse after a reset you could asend SMS again. It is probably the voltage drop or a noise interference during power off and restore.