BG77: phonebook, APP RDY, +CEREG: 1 repeated

IoT Modules LPWA Module
1

Hi,

  • is there a phone book in BG77? I couldn’t find any documents describing the commands.

  • We’re having issues with APP RDY URC that keeps coming up randomly during the modem cycle, for example in the middle of opening a TCP socket. Looks like nothing breaks but we haven’t observed this in the past year with older software (BG77LAR02A04_01.001). Now we’re testing BG77LAR02A04_01.003. If that’s the case, is it possible to disable this URC?

  • Another issue: duplicated +CEREG: 1 URC - I thought that it means registration state change, but it seems that’s not the case. Maybe some URCs were dropped?

    17-08-21 19:09:02:670> at+qiopen=1,0,“TCP”,“195.137.208.48”,54235,5554
    17-08-21 19:09:02:674>
    17-08-21 19:09:02:674>
    17-08-21 19:09:02:674> OK
    17-08-21 19:09:02:674>
    17-08-21 19:09:03:395>
    17-08-21 19:09:03:395>
    17-08-21 19:09:03:395> +CEREG: 1,“D0EB”,“38E0B0D”,8
    17-08-21 19:09:03:401>
    17-08-21 19:10:38:295>
    17-08-21 19:10:38:295>
    17-08-21 19:10:38:295> +CEREG: 1,“D0EB”,“38D640B”,8
    17-08-21 19:10:38:297>

2

1 when you get APP ready ， it means that you module has reset .
pls check if your module has entered PSM mode ，if not pls email to support@quectel.com for more support

  1. image
    image848×211 19.3 KB
    .

for the second issue ， pls refer to the above doc ， since the cell id has changed ，hence the new URC is coming , if it is inconveniecent for you , you can disable this URC with
at+cereg=0

3
  1. Yes, i thought so too, but look at this:

04-08-21 08:47:49:063> at+qiopen=1,0,“TCP”,“195.137.208.48”,54235,5554 - open socket request
04-08-21 08:47:49:067>
04-08-21 08:47:49:067>
04-08-21 08:47:49:067> OK
04-08-21 08:47:49:067>
04-08-21 08:47:49:896> APP RDY - looks like reset, but:
04-08-21 08:47:49:896>
04-08-21 08:47:52:178> +QIOPEN: 0,0 - socket opened successfully
04-08-21 08:47:52:276> +QISTATE: 0,“TCP”,“195.137.208.48”,54235,5554,2,1,0,0,"uart1

  1. I didn’t notice the cell id has changed, sorry. It’s clear to me now.

And what about the phonebook support?

4

since it is iot module ， there is no phoneboook in it ， sorry for this inconvenience