BG95-M3 problem with ping

Technical Subjects
1

Dear Quectel,
We’ve integrated the BG95-M3 module with our SOM. I’ve changed the port from ttyUSB3 to ttyUSB2 and made it work.

We also verified that module is working by using ping which is associated with the ppp0 interface. But here when we put a long run(ping google.com) for data packets. Ping runs for a particular count and drops suddenly. Later
if we start again it works. PFA log for reference.

64 bytes from maa03s41-in-f14.1e100.net (142.250.195.174): icmp_seq=1124 ttl=116 time=451 ms
64 bytes from maa03s41-in-f14.1e100.net (142.250.195.174): icmp_seq=1125 ttl=116 time=171 ms
64 bytes from maa03s41-in-f14.1e100.net (142.250.195.174): icmp_seq=1126 ttl=116 time=190 ms
[ 8821.154576] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19)
[ 8821.167548] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19)
[ 8821.180848] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19)
[ 8821.189472] option1 ttyUSB2: usb_wwan_indat_callback: resubmit read urb failed. (-19)
Modem hangup
Connect time 49.0 minutes.
Sent 201796 bytes, received 199141 bytes.
Script /etc/ppp/ip-down started (pid 23000)
Connection terminated.
ping: sendmsg: Network is unreachable
Script /etc/ppp/ip-down finished (pid 23000), status = 0x0
ping: sendmsg: Network is unreachable

Regards
Mohan Krishna

2

When the Ping be interupted ，Pls enter the below cmd to check your USB device first

ls /dev/ttyUSB*

if the USB device is lost , pls reboot your device ，

if the USB device is available still ， pls collect QXDM log ， we will help your check modem logs and email to support@quectel.com