network time zone updation

[nagaraju]

sir i inserted other than idea sim in Gsm modem the current date & time is not updated in rtc in that wind +15 command is not coming.
but when i insert the idea sim in GSM module the current date & time is update to current values in rtc.
what is problem behind this,
please any one can help me with beautiful quote
thank u

[davidc]

Hiya,

Have you enabled the +WIND unsolicited results? Check out the

AT+WIND

command in the Firmware guide.

But … in GSM modules (at least the Q2686 up to firmware FW7.47 in my knowledge), the modules DO NOT automatically update the RTC from the NITZ messages.

Depending on your module, you might have to write a small OpenAT application to do the RTC network time update.

ciao, Dave

[awneil]

@davidc

in GSM modules (at least the Q2686 up to firmware FW7.47 in my knowledge), the modules DO NOT automatically update the RTC from the NITZ messages.

Agree.

Further, there is no guarantee as to when the network will issue NITZ - or even that it will ever issue it at all.

Q2698 RTC fault after ADL_SIM_EVENT_INSERTED

Hiya, Cool. Not all telcos provide the NITZ message - and there is a lot of variation between which NITZ sub messages are provided as well. Note that the time zone (+38 in your case) is the number 15 minute increments difference between the time provided and UTC. In your case you are 9.5 hours (central Australia?) ahead of UTC. Me too. I’ll keep wracking my brain trying to remember where/how I saw the module automatically update time based on the network connection. ciao, Dave

Q2686 GPRS problem

Not a good idea, I’m afraid. Not all networks give NITZ at all, and some that do only give it after GPRS attach. So it’s no better than waiting for GPRS-Attach - but possibly worse! As I said to you before: No, that is not a failure at all - that is perfectly normal behaviour! See: https://forum.sierrawireless.com/t/documentation-unhelpful-misleading-wip-berr-ok-inprogress/3706/3 If you don’t get WIP_BEV_IP_CONNECTED, you should get WIP_BEV_CONN_FAILED

Is there any AT command to get NITZ time

No, that is not a general solution - that depends entirely upon the network! Not all networks give NITZ, and the ones that do give it may give it on different conditions. In summary: there is no way to request NITZ - you just have to be ready for it if and when your network sees fit to send it.

Date ,Time ,Time Zone information

As I said to you earlier (the very first reply in this thread): The modem cannot report information that hasn’t been provided to it! Indeed - unless you can find a service provider that will specifically guarantee that this inforation will be provided…

etc, etc,…