I have some problems with the context activation on Quectel EC200T USB in chinese network although in russian networks the modem works fine.

I have the following during the activation:

2021-05-18T23:35:50.624972+03:00 ofonod[999]: [info] Modem: < \r\nCONNECT\r\n
2021-05-18T23:35:50.625854+03:00 ofonod[999]: [debug] ../git/ofono/drivers/atmodem/gprs-context.c:at_cgdata_cb() ok 1
2021-05-18T23:35:50.626564+03:00 ofonod[999]: [debug] ../git/ofono/drivers/atmodem/gprs-context.c:setup_ppp()
2021-05-18T23:35:50.627463+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 0:INITIAL
2021-05-18T23:35:50.628216+03:00 ofonod[999]: [info] PPP: event: 0 (Up), action: 2, new_state: 2 (CLOSED)
2021-05-18T23:35:50.628884+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 2:CLOSED
2021-05-18T23:35:50.629521+03:00 ofonod[999]: [info] PPP: event: 2 (Open), action: 1026, new_state: 6 (REQSENT)
2021-05-18T23:35:50.630234+03:00 ofonod[999]: [info] PPP: lcp: pppcp_initialize_restart_count: current state 2:CLOSED
2021-05-18T23:35:50.630876+03:00 ofonod[999]: [info] PPP: lcp: pppcp_send_configure_request: current state 2:CLOSED
2021-05-18T23:35:50.631641+03:00 ofonod[999]: [info] PPP: ../git/ofono/gatchat/gatppp.c:ppp_enter_phase() 1
2021-05-18T23:35:50.634253+03:00 ofonod[999]: [info] PPP: lcp: pppcp_process_configure_request: current state 6:REQSENT
2021-05-18T23:35:50.635270+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 6:REQSENT
2021-05-18T23:35:50.635423+03:00 ofonod[999]: [info] PPP: event: 7 (RCR-), action: 4006, new_state: 6 (REQSENT)
2021-05-18T23:35:50.635544+03:00 ofonod[999]: [info] PPP: lcp: pppcp_send_configure_nak: current state 6:REQSENT
2021-05-18T23:35:50.636566+03:00 ofonod[999]: [info] PPP: lcp: pppcp_process_configure_ack: current state 6:REQSENT
2021-05-18T23:35:50.636696+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 6:REQSENT
2021-05-18T23:35:50.637067+03:00 ofonod[999]: [info] PPP: event: 8 (RCA), action: 27, new_state: 7 (ACKRCVD)
2021-05-18T23:35:50.637187+03:00 ofonod[999]: [info] PPP: lcp: pppcp_initialize_restart_count: current state 6:REQSENT
2021-05-18T23:35:50.637187+03:00 ofonod[999]: [info] PPP: lcp: pppcp_initialize_restart_count: current state 6:REQSENT
2021-05-18T23:35:50.637597+03:00 ofonod[999]: [info] PPP: lcp: pppcp_process_configure_request: current state 7:ACKRCVD
2021-05-18T23:35:50.637715+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 7:ACKRCVD
2021-05-18T23:35:50.637826+03:00 ofonod[999]: [info] PPP: event: 7 (RCR-), action: 4007, new_state: 7 (ACKRCVD)
2021-05-18T23:35:50.637929+03:00 ofonod[999]: [info] PPP: lcp: pppcp_send_configure_nak: current state 7:ACKRCVD
2021-05-18T23:35:50.639907+03:00 ofonod[999]: [info] PPP: lcp: pppcp_process_configure_request: current state 7:ACKRCVD
2021-05-18T23:35:50.640246+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 7:ACKRCVD
2021-05-18T23:35:50.640992+03:00 ofonod[999]: [info] PPP: event: 7 (RCR-), action: 4007, new_state: 7 (ACKRCVD)

So, the following lines repeats infinitely, context is not activated and ofono uses ~90% of the CPU until I stop it:

 

2021-05-18T23:35:50.637929+03:00 ofonod[999]: [info] PPP: lcp: pppcp_send_configure_nak: current state 7:ACKRCVD
2021-05-18T23:35:50.639907+03:00 ofonod[999]: [info] PPP: lcp: pppcp_process_configure_request: current state 7:ACKRCVD
2021-05-18T23:35:50.640246+03:00 ofonod[999]: [info] PPP: lcp: pppcp_generate_event: current state 7:ACKRCVD
2021-05-18T23:35:50.640992+03:00 ofonod[999]: [info] PPP: event: 7 (RCR-), action: 4007, new_state: 7 (ACKRCVD)

Could someone shed a light on what is going on there and how to solve that?

Thanks in advance.

Have a nice day.