Quectel EC20 LTE Module doesnt show me incoming call or sms

0
votes

I'm using a LTE Module QUECTEL EC20 of this model connected to my Arduino as software Serial monitor and AT Commands directly, I can communicate perfectly with the Module, I get answer OK, Signal, IMEI, and a lot of commands with any problem.

Quectel ec20

I have tone and I can answer the incoming call with ATA or hang up a call.

I'have tried changing the baud rate from 115200 to 19200 and 9600

I check all these commands:

AT+CLIP=1 
AT+CREG=1
AT+COPS?

Everything look perfect but I dont get incomming data in my serial when I call or send a sms.

I have experience with SIM800, SIM5320, SIM7600 of SIMCOM brand working perfectly, But this is my first time trying this model and I have a lot of 5, I tried with all.

I have like one week looking information and trying but without success.

Thanks in advance.

1
gsmat-commandmodemltequectel
Let me understand, please. You are not able to receive data DURING a voice call? And what kind of data are you trying to exchange? What AT commands do you provide in order to perform this data exchange? – Roberto Caboni
@Cubo78 Hi, yes for example when you call to the number in a Sim800 or sim5320 the serial trasmit the number and some extra data while the call is coming. Like this: +CLIP: "2069220880" , "161" , "","",0 – fabutkovic
@Cubo78 that line of data is sent to the serial monitor for each telephone ringing. And the same way with a SMS normally it is sent to serial. But I dont know if I must activate some function in QUECTEL EC20 to start to receive this data. – fabutkovic
@fabuktovic now it's clear. I'm not an EC20 expert, but I know AT commands standards and your procedure seems correct. +CLIP=1 should actually enable incoming calls URCs. Just a question: do you reboot the device between +CLIP=1 and the incoming call? Otherwise you might have found an EC20 bug :) – Roberto Caboni
@Cubo78 thanks for your answer, really I've tried everything reboot, turn off, and also save configuration with AT&W and restart the configuration to factory values, it's very strange. I received 5 Quectel Ec20 and 5 Sim7600 of the same Aliexpress seller and the SIM7600 it's working perfectly. – fabutkovic

1 Answers

0
votes

Finally I had to contact to QUECTEL support and they responded very kindly and fast.

They suggest to add this at command to change the port of data delivery. 

at+qurccfg="urcport","uart1"

after that! finally it start working perfectly. If any need extra help please contact me. Thanks