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oleuzop
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Joined: Sat Feb 13, 2021 10:27 am

Losing Internet connection after receiving incoming phone call

Sat Feb 13, 2021 12:21 pm

Hi everybody,

I recently purchased a LHGG LTE6 Kit and it works quite well.

I'm using it with a regular SIM card with data plan (and phone calls)

For whatever reason, whenever receiving incoming calls into the phone number the connection fails. I'm not sure if it's a problem of LTE or routing itself, since I've checked the logs and haven't seen any error on the LTE interface.

The logs for LTE interface. The call received was at 11h07m37
11:00:04 interface,info lte1 link up 
11:02:28 system,info,account user admin logged in from 192.168.88.252 via web 
11:02:28 system,info,account user admin logged in via local 
11:02:50 system,info,account user admin logged in via local 
11:03:19 system,info,account user admin logged out via local 
11:05:21 system,info,account user admin logged in via local 
11:07:37 lte,async,raw lte1: +CREG: 1,"67e8","03f7a51f",7 
11:07:37 lte,async,raw lte1: $CREG: 1,"67e8","03f7a51f",7,"17a" 
11:07:37 lte,async,raw lte1: +CEREG: 1,"67e8","03f7a51f",7 
11:07:39 lte,async,raw lte1: sent AT+CFUN? 
11:07:39 lte,async,raw lte1: rcvd +CFUN: 1 
11:07:39 lte,async,raw lte1: sent AT+COPS? 
11:07:39 lte,async,raw lte1: rcvd +COPS: 0,2,"21407",7 
11:07:40 lte,async,raw lte1: +CEREG: 1,"67e8","03f7a51e",7 
11:07:40 lte,async,raw lte1: +CREG: 1,"67e8","03f7a51e",7 
11:07:40 lte,async,raw lte1: $CREG: 1,"67e8","03f7a51e",7,"17a" 
11:07:42 lte,async,raw lte1: sent AT+CFUN? 
11:07:43 lte,async,raw lte1: rcvd +CFUN: 1 
11:07:43 lte,async,raw lte1: sent AT+COPS? 
11:07:43 lte,async,raw lte1: rcvd +COPS: 0,2,"21407",7 

I'm using the lastest RouterOS 6.48.1 and almost the latest modem firmware:
[admin@MikroTik] > /interface lte info lte1 once        
           pin-status: ok
  registration-status: registered
        functionality: full
         manufacturer: "MikroTik"
                model: "R11e-LTE6"
             revision: R11e-LTE6_V025

Anyone can throw a little light on this? Any idea where else to look for errors / logs?

Thanks in advance!

Tomás

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