Wiki 103 - projects:glinet:e3372
https://praisepen.uk/wiki103/
2026-05-25T01:35:19+00:00Wiki 103
https://praisepen.uk/wiki103/
https://praisepen.uk/wiki103/lib/exe/fetch.php?media=wiki:dokuwiki.svgtext/html2026-02-04T16:26:34+00:00Anonymous (anonymous@undisclosed.example.com)e3372-on-glinet
https://praisepen.uk/wiki103/doku.php?id=projects:glinet:e3372:e3372-on-glinet&rev=1770222394&do=diff
Using Huawei E3372h on glinet Beryl
These instructions worked for a GL-MT1300 (Beryl Ac1300) and a GL-MT3000 (Beryl AX)
Make sure its a h stick. Other sticks will probably need flashing.
Source info here: <https://forum.openwrt.org/t/huawei-e3372h-320-in-ncm-mode/126018/11>
Reset Beryl & configure Passwords and Wifitext/html2026-02-12T09:41:04+00:00Anonymous (anonymous@undisclosed.example.com)fixing-drops
https://praisepen.uk/wiki103/doku.php?id=projects:glinet:e3372:fixing-drops&rev=1770889264&do=diff
Fixing E3372 PDP Drops
The issue
So after a while the e3372 drops the connection with the carrier and beryl doesn't try to fix it. The issue is that the modem/giffgaff between them drop the PDP (who knows why - possibly the dhcp lease expires?) and don't fix it.text/html2026-02-12T09:57:49+00:00Anonymous (anonymous@undisclosed.example.com)further-ideas
https://praisepen.uk/wiki103/doku.php?id=projects:glinet:e3372:further-ideas&rev=1770890269&do=diff
A page of thoughts for future improvements
Bugs in /usr/bin/gl_modem
glinet wont see the modem as connected because:
The iccid for giffgaff is only 19 digits and gl_modem has a hard coded 20 digit length.
It doesn't have apn details for giffgaff: No APN node found for mcc:234 mnc:105text/html2026-02-12T09:36:26+00:00Anonymous (anonymous@undisclosed.example.com)glbugs_etc
https://praisepen.uk/wiki103/doku.php?id=projects:glinet:e3372:glbugs_etc&rev=1770888986&do=diff
Issues with glinet modem compatibility
A list of useful info
/usr/bin/gl_modem ## The gl_modem binary
/lib/netifd/proto/ncm.sh ## Part of netifd
/lib/netifd/netifd-proto.sh ## More netifd
/usr/bin/modem_network_recover_detection.sh ## part of glinet kmwan for fixing broken connections.
ls -l /usr/bin/modem*