LCP Configuration Options

Maximum Receive Unit (MRU)
01  04  MRU Default is 1020 decimal 
Authentication-Protocol
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 
Magic-Number
05  06  Magic-Number Default is no magic number 
Address-and-Control-Field-Compression
08  02 Default is no compression 
Async-Control-Character-Map
02  06  Async-Map Default is FFFFFFFF 
Quality-Protocol
04  Length  Quality  Protocol  Data Default is no LQM 
08  c0  25  Reporting-Period 
Protocol-Field-Compression
07  02 Default is no compression 
Packet Formats