How to provide password for pppd at runtime
 

Hello All,
I want to establish a pppd connection to the remote machine. I want to provide the username and pasword at runtime while firing the pppd string.I cannot store it in pap-secrets.
i want to know the options in pppd which will enable me to put the username and password in the string.I do not want to put password in PAP-secrets or CHAP-secret
How can i do it?

Regards,
Deepa