Audio settings for UMTS&LTE KIT

Good morning everyone,
I’m trying to make from the umts&lte kit a voice call, but I can’t hear the audio for either outgoing or incoming calls.
Below are the settings and at commands used to make the calls. I have used QNavigator to simulate the at commands.

What am I doing wrong?
/* Use ATI to get module information of Manufacturer ID, Device modle and Firmware version */

[2021-08-04 18:01:05:854_S:] ATI
[2021-08-04 18:01:05:917_R:] ATI
[2021-08-04 18:01:05:917_R:] Quectel
[2021-08-04 18:01:05:917_R:] EC25
[2021-08-04 18:01:05:917_R:] Revision: EC25EFAR06A01M4G

/* Use AT+CREG? /AT+CGREG? to query the network registration status. */

[2021-08-04 17:59:21:856_S:] AT+CREG?
[2021-08-04 17:59:21:919_R:] AT+CREG?
[2021-08-04 17:59:21:919_R:] +CREG: 0,1
[2021-08-04 17:59:21:919_R:] OK
[2021-08-04 17:59:21:924_S:] AT+CGREG?
[2021-08-04 17:59:21:989_R:] AT+CGREG?
[2021-08-04 17:59:21:989_R:] +CGREG: 0,1
[2021-08-04 17:59:21:989_R:] OK

/* Use AT+COPS? to query current Network Operator */
[2021-08-04 17:59:21:995_S:] AT+COPS?
[2021-08-04 17:59:22:060_R:] AT+COPS?
[2021-08-04 17:59:22:060_R:] +COPS: 0,0,“I TIM”,7
[2021-08-04 17:59:22:060_R:] OK

[2021-08-04 18:02:54:354_S:] AT+QDAI?
[2021-08-04 18:02:54:410_R:] AT+QDAI?
[2021-08-04 18:02:54:410_R:] +QDAI: 3,0,0,4,0,0,1,1

/* Use ATD; to dial up */
[2021-08-04 18:03:23:482_S:] ATD+393490625232;
[2021-08-04 18:03:23:536_R:] ATD+393490625232;
[2021-08-04 18:03:23:536_R:] OK
[2021-08-04 18:03:26:527_S:] AT+CLCC
[2021-08-04 18:03:26:583_R:] AT+CLCC
[2021-08-04 18:03:26:583_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:26:583_R:] +CLCC: 2,0,2,0,0,"+393490625232",145
[2021-08-04 18:03:26:583_R:] OK
[2021-08-04 18:03:29:526_S:] AT+CLCC
[2021-08-04 18:03:29:582_R:] AT+CLCC
[2021-08-04 18:03:29:582_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:29:582_R:] +CLCC: 2,0,3,0,0,"+393490625232",145
[2021-08-04 18:03:29:582_R:] OK
[2021-08-04 18:03:32:526_S:] AT+CLCC
[2021-08-04 18:03:32:606_R:] AT+CLCC
[2021-08-04 18:03:32:606_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:32:606_R:] +CLCC: 2,0,3,0,0,"+393490625232",145
[2021-08-04 18:03:32:606_R:] OK
[2021-08-04 18:03:35:528_S:] AT+CLCC
[2021-08-04 18:03:35:606_R:] AT+CLCC
[2021-08-04 18:03:35:606_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:35:606_R:] +CLCC: 2,0,3,0,0,"+393490625232",145
[2021-08-04 18:03:35:606_R:] OK
[2021-08-04 18:03:38:524_S:] AT+CLCC
[2021-08-04 18:03:38:595_R:] AT+CLCC
[2021-08-04 18:03:38:595_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:38:595_R:] +CLCC: 2,0,0,0,0,"+393490625232",145
[2021-08-04 18:03:38:595_R:] OK
[2021-08-04 18:03:41:525_S:] AT+CLCC
[2021-08-04 18:03:41:593_R:] AT+CLCC
[2021-08-04 18:03:41:593_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:41:593_R:] +CLCC: 2,0,0,0,0,"+393490625232",145
[2021-08-04 18:03:41:593_R:] OK
[2021-08-04 18:03:44:234_S:] ATH
[2021-08-04 18:03:44:290_R:] ATH
[2021-08-04 18:03:44:530_R:] OK
[2021-08-04 18:03:44:543_S:] AT+CLCC
[2021-08-04 18:03:44:597_R:] AT+CLCC
[2021-08-04 18:03:44:597_R:] +CLCC: 1,1,0,1,0,"",128
[2021-08-04 18:03:44:597_R:] OK

Thank you so much for the help


You forgot to insert the audio module. It should be inserted in the empty space behind the power socket Normally there are two small boards in the EVB box. Either containing one of the audio codecs and amplifiers

There were no codes in my EVB kit.

Is it possible to configure an external sound card, for example usb, present in my raspberry pi board?


In theory yes. One should be able to stream the digital data over the GPS serial(USB).
Hardwired should be possible as well. I have no experience however on this topic. Should be comparable to the mini pcie form factor audio breakout
Are you sure the small boards are missing? it is the most easy way of testing