|
表 4.4
|
X.25信息包类型
|
第3字节
|
| DATA |
PPPMSSSO
|
| CALL REQUEST |
00001011
|
| CALL ACCEPTED |
00001111
|
| CLEAR REQUEST |
00010011
|
| CLEAR CONFIRMATION |
00010111
|
| INTERRUPT |
00100011
|
| INTERRUPT CONFIRMATION |
00100111
|
| RECEIVE READY |
PPP00001
|
| RECEIVE NOT READY |
PPP00101
|
| REJECT |
PPP01001
|
| RESET REQUEST |
00011011
|
| RESET CONFIRMATION |
00011111
|
| RESTART REQUEST |
11111011
|
| RESTART CONFIRMATION |
11111111
|
| DIAGNOSTIC |
11110001
|
P=捎带，S=序号，M=代序位
|
|