I have an MC7511 in QMI mode managed by a python script on Linux using libqmi. It is connected to AT&T via an IPv4 PDP session. This is the router and it provides WiFi to local devices where the MTU is set to 1400 (IPv4 only; no IPv6).
A WIndows 10 machine connects to the MC7511 router above via WiFi. A hard crash occurs on the MC7511 when I join a Microsoft Teams call at the Windows 10 machine. By hard crash I mean that data flow immediately ceases at the MC7511 and /dev/ttyUSB2 is no longer responsive; nothing spits out in dmesg.
I’m still trying to characterize but so far this only happens with Microsoft Teams when joining a call. Teams otherwise works OK say for general chat.
I’m running the AT&T image below. Any ideas on what might cause this?
at!entercnd="A710" OK at!image? TYPE SLOT STATUS LRU FAILURES UNIQUE_ID BUILD_ID FW 1 GOOD 10 0 0 ?_? 01.07.02.00_? FW 2 GOOD 1 0 0 ?_? 01.07.00.00_? FW 3 GOOD 9 0 0 ?_? 01.08.04.00_? FW 4 EMPTY 0 0 0 Max FW images: 4 Active FW image is at slot 1 TYPE SLOT STATUS LRU FAILURES UNIQUE_ID BUILD_ID PRI FF GOOD 0 0 0 002.008_004 01.07.02.00_ATT PRI FF GOOD 0 0 0 002.002_000 01.07.00.00_GENERIC PRI FF GOOD 0 0 0 002.015_002 01.08.04.00_VERIZON Max PRI images: 50 OK at!impref? !IMPREF: preferred fw version: 00.00.00.00 preferred carrier name: AUTO-SIM preferred config name: AUTO-SIM_000.000_000 current fw version: 01.07.02.00 current carrier name: ATT current config name: ATT_002.008_004 OK at+cgdcont? +CGDCONT: 1,"IPV4V6","broadband","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0 OK