Maximum Receive Unit (MRU)
| 01 | 04 | MRU Default is 1020 decimal |
| 03 | Length | Authentication | Protocol | Data Default is no authentication |
| 04 | c0 | 23 | PAP | |
| 05 | c2 | 23 | 05 CHAP using MD5 | |
| 05 | c2 | 23 | 80 MS-CHAP |
| 05 | 06 | Magic-Number Default is no magic number |
| 08 | 02 Default is no compression |
| 02 | 06 | Async-Map Default is FFFFFFFF |
| 04 | Length | Quality | Protocol | Data Default is no LQM |
| 08 | c0 | 25 | Reporting-Period |
| 07 | 02 Default is no compression |