Unable to access "Own Numbers" phonebook

Technical Subjects Software General Function
1

I have a collection of Queclel modules, including EC25-AU, EM06-E, EM12-G and RM500Q-AE.

Whenever I get a new or replacement SIM, the MSISDN entry is empty. So AT+CNUM does not return the SIM’s “phone number”.

So I need to write the MSISDN to the SIM myself.

But none of my Quectel modems let me access the “Own Numbers” phonebook directly. I need to do this to write entry 1 of the “ON” phonebook.

It’s not accessible:

AT+CPBS=?
+CPBS: (“SM”,“DC”,“MC”,“ME”,“RC”,“EN”)
OK
AT+CPBS=“ON”
ERROR

I have no problem accessing the SIM’s “ON” phone book and writing the entry when I use other brands of modem.

1 Like
3

we have internal AT to write MSISDN ， but this AT can not open to customer directly ，If necessary, please contact your sales representative

we support query like the below：

[2022-02-11_17:26:57:315]AT+cnum

[2022-02-11_17:26:57:317]+CNUM: ,"+8618019558308",145

4

Thank you for your reply.

I find it odd that you don’t allow read/write access to the “ON” phonebook using standard 3GPP AT commands.

Such access is documented in my copy of your EG512R&EM1x0R Series AT Commands Manual and RG50xQ&RM5xxQ Series AT Commands Manual (section 7.4 of both).

But my RM500Q-AE still doesn’t support “ON” as a phonebook.

5

Was there any resolution to this? I have an EC25 that I cant store an MSISDN for.

6

I didn’t follow up the offer from Quectel which involves contacting a sales representative.

I just use a different modem - one which gives me “ON” phonebook write access. Inconvenient though.

7

Another forum contributor pointed me in the right direction.

We need to change the set of phonebooks from “Global” to “Local”. It’s a Qualcomm command (not Quectel) that’s used to do this. So it can apply to other makes of modem using a Qualcomm chipset.

Switch to local phonebooks: AT$QCPBMPREF=1

Switch to global phonebooks: AT$QCPBMPREF=0

See forum article: EC21-EUX read MSISDN