ISDN: PPP without authentication?

[guilhem.perez]

Hi,

I don't succeed in configuring a cisco routeur so as only incomming call can connect using PPP without authentication over a ISDN BRI.

I succeed using authentication chap, but I don't know how to do without authentication.

Could someone help me?

Best regards

Thanks

[aghaznavi]

Use this document for ISDN:PPP .

http://www.cisco.com/en/US/tech/tk713/tk507/technologies_tech_note09186a0080093c6f.shtml