When VZAccess installs a "modem", this can be used for internet access through Verizon, but not to normal telephone numbers.
You can use the Verizon "modem" to get on the Internet bypassing the Verizon software. You use a phone number of #777, a username of
[email protected] (replace 8885551212 with YOUR card's 10 digit mobile number) and a password of "vzw".
Bypassing the Verizon software doesn't change the way the connection works in any way. The Verizon VZAccess software simply does the same thing for you automatically if you use it to connect to the Internet.