How to configure a modem on G450?

[xu8]

Hi,
I want to configure a modem dial in on a G450 without S8300. I can enter USB modem interface by command 'interface USB-modem'. And, I can enable authentication by 'PPP authentication pap'. But I cannot find the command 'ppp pap sent-username'.
So, Where can I set up the username, password and answer rings number for modem dial in?
Thank you!

[mlombardi1]

http://support.avaya.com/css/P8/documents/100171679

See p249. Does this help?