CHAP - The Challenge-Handshake Protocol is used to pass authentication information between the client and server. This information is encrypted using either MD5 or DES techniques. The Motorola implementation will permit MLPPP CHAP sessions to MD5 servers (Ascend, Cisco, etc.) using WIN95 clients. This is accomplished by allowing the BitSURFR Pro to authenticate the second channel. Currently the Microsoft WIN95 client does not support this second challenge. Other clients on the market can support the second challenge and do not require the @M20 command described below for operation. CHAP OPERATING PROCEDURE To enable Challenge-Handshake Authentication Protocol , enter: AT@M2=C for CHAP-MD5 or AT@M2=M for CHAP-DES (Microsoft) and AT@M20= "SECRET" where SECRET is the password you have entered in your WIN95 dialer or internet communication package. This is only for MD5 Multilink. CHAP-DES Multilink is not supported for WIN95. Other dialers may use "" to clear this field and operate in clear CHAP mode. Win95 cannot accept multiple challenges. Notes: Please enter the double quotes shown above in addition to the password. To clear out the password enter AT@M20="". If you are not using Win95 with the BitSurfr Pro, the @M20 command is set to "". The Dial String Modifier option allows you to enter a Password in each dial string. If this option is used in conjunction with the @M20 command, the Dial String Modifier will supersede the password assigned in the @M20 command. To use the Dial String Modifier enter >P="secret" after the dial string. (e.g. atd9,5551212>P="motorola"). The double quotes are required.