# WP7611 breaks connection it seems **URL:** \ **Category:** IoT Modules\ **Created:** [March 24, 2026, 10:41am UTC](https://forum.sierrawireless.com/t/wp7611-breaks-connection-it-seems/35815 "2026-03-24T10:41:31Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [March 24, 2026, 2:19pm UTC](https://forum.sierrawireless.com/t/wp7611-breaks-connection-it-seems/35815/2 "2026-03-24T14:19:55Z")
> [@anne.johan.de.vries](#): > > The device itself will make a PPP connection automatically and has a webserver which we can access over VPN. Do you mean the wp76 module will make ppp connection? Or the PC makes ppp connection via wp76 module? Have you verified if wp76 can establish data connection by cm command? How about using at!scact instead of ppp? > [@Example on establishing data connection by AT!SCACT via MBPL R20 driver](https://forum.sierrawireless.com/t/example-on-establishing-data-connection-by-at-scact-via-mbpl-r20-driver/24130): > > Here is an example to establish data connection by AT!SCACT via MBPL R20 driver: Module: WP7609 FW: R13 MBPL: R20 PC Environment: Ubuntu 18 need to install the MBPL R20 driver for qmi\_wwan and qcserial (MBPL\_Drivers\_USB\_R20\_ENG1-src.tar.gz) avoid the Ubuntu changing the network name: ln -s /dev/null /etc/systemd/network/99-default.link sudo apt-get install libqmi-utils sudo apt-get install udhcpc now insert the USB to PC sudo chmod 777 /sys/class/net/wwan0/qmi/raw\_ip … --- _[View the full topic](https://forum.sierrawireless.com/t/wp7611-breaks-connection-it-seems/35815)._