Modem HL8548 new firmware ( connection problems

What commands did you use to configure your working modem?
Now we trying to configure PPP connection on Ubuntu.

I don’t add extra command

How to reset the modem to factory settings?

You can see here

Btw, how is your test result of linux dial up?

I’m trying to configure and connect to the network, using Ubuntu on VirtualBox, but it’s unsuccessfully yet.