Sierra Wireless 20070914 - Manual (Page 182)

PPP over Ethernet (PPPoE)
Rev 3.0B Feb.08 169
Figure 2-15: PPPoE : Networking
e. Remove the checks from all three PPP settings.
f. Select OK.
Figure 2-16: PPP Settings
Tip: You may want to check the Options tab and change the settings
for applications you might be using. The default options are generally
applicable for most uses.
Caution: Unless specifically directed to do so by Support or your
network administrator, you do not need to make any changes to the
options on the Security tab.
g. Select OK until you return to the Connect window.